Merge git://git.linux-nfs.org/pub/linux/nfs-2.6

* git://git.linux-nfs.org/pub/linux/nfs-2.6: (118 commits)
  NFSv4: Iterate through all nfs_clients when the server recalls a delegation
  NFSv4: Deal more correctly with duplicate delegations
  NFS: Fix a potential race between umount and nfs_access_cache_shrinker()
  NFS: Add an asynchronous delegreturn operation for use in nfs_clear_inode
  nfs: convert NFS_*(inode) helpers to static inline
  nfs: obliterate NFS_FLAGS macro
  NFS: Address memory leaks in the NFS client mount option parser
  nfs4: allow nfsv4 acls on non-regular-files
  NFS: Optimise away the sigmask code in aio/dio reads and writes
  SUNRPC: Don't bother changing the sigmask for asynchronous RPC calls
  SUNRPC: rpcb_getport_sync() passes incorrect address size to rpc_create()
  SUNRPC: Clean up block comment preceding rpcb_getport_sync()
  SUNRPC: Use appropriate argument types in rpcb client
  SUNRPC: rpcb_getport_sync() should use built-in hostname generator
  SUNRPC: Clean up functions that free address_strings array
  NFS: NFS version number is unsigned
  NLM: Fix a bogus 'return' in nlmclnt_rpc_release
  NLM: Introduce an arguments structure for nlmclnt_init()
  NLM/NFS: Use cached nlm_host when calling nlmclnt_proc()
  NFS: Invoke nlmclnt_init during NFS mount processing
  ...

fs/lockd/clntlock.c

@@ -41,6 +41,48 @@ struct nlm_wait {
 
 static LIST_HEAD(nlm_blocked);
 
+/**
+ * nlmclnt_init - Set up per-NFS mount point lockd data structures
+ * @nlm_init: pointer to arguments structure
+ *
+ * Returns pointer to an appropriate nlm_host struct,
+ * or an ERR_PTR value.
+ */
+struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init)
+{
+	struct nlm_host *host;
+	u32 nlm_version = (nlm_init->nfs_version == 2) ? 1 : 4;
+	int status;
+
+	status = lockd_up(nlm_init->protocol);
+	if (status < 0)
+		return ERR_PTR(status);
+
+	host = nlmclnt_lookup_host((struct sockaddr_in *)nlm_init->address,
+				   nlm_init->protocol, nlm_version,
+				   nlm_init->hostname,
+				   strlen(nlm_init->hostname));
+	if (host == NULL) {
+		lockd_down();
+		return ERR_PTR(-ENOLCK);
+	}
+
+	return host;
+}
+EXPORT_SYMBOL_GPL(nlmclnt_init);
+
+/**
+ * nlmclnt_done - Release resources allocated by nlmclnt_init()
+ * @host: nlm_host structure reserved by nlmclnt_init()
+ *
+ */
+void nlmclnt_done(struct nlm_host *host)
+{
+	nlm_release_host(host);
+	lockd_down();
+}
+EXPORT_SYMBOL_GPL(nlmclnt_done);
+
 /*
  * Queue up a lock for blocking so that the GRANTED request can see it
  */

fs/lockd/clntproc.c

@@ -145,34 +145,21 @@ static void nlmclnt_release_lockargs(struct nlm_rqst *req)
 	BUG_ON(req->a_args.lock.fl.fl_ops != NULL);
 }
 
-/*
- * This is the main entry point for the NLM client.
+/**
+ * nlmclnt_proc - Perform a single client-side lock request
+ * @host: address of a valid nlm_host context representing the NLM server
+ * @cmd: fcntl-style file lock operation to perform
+ * @fl: address of arguments for the lock operation
+ *
  */
-int
-nlmclnt_proc(struct inode *inode, int cmd, struct file_lock *fl)
+int nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl)
 {
-	struct rpc_clnt		*client = NFS_CLIENT(inode);
-	struct sockaddr_in	addr;
-	struct nfs_server	*nfssrv = NFS_SERVER(inode);
-	struct nlm_host		*host;
 	struct nlm_rqst		*call;
 	sigset_t		oldset;
 	unsigned long		flags;
-	int			status, vers;
-
-	vers = (NFS_PROTO(inode)->version == 3) ? 4 : 1;
-	if (NFS_PROTO(inode)->version > 3) {
-		printk(KERN_NOTICE "NFSv4 file locking not implemented!\n");
-		return -ENOLCK;
-	}
-
-	rpc_peeraddr(client, (struct sockaddr *) &addr, sizeof(addr));
-	host = nlmclnt_lookup_host(&addr, client->cl_xprt->prot, vers,
-				   nfssrv->nfs_client->cl_hostname,
-				   strlen(nfssrv->nfs_client->cl_hostname));
-	if (host == NULL)
-		return -ENOLCK;
+	int			status;
 
+	nlm_get_host(host);
 	call = nlm_alloc_call(host);
 	if (call == NULL)
 		return -ENOMEM;
@@ -219,7 +206,7 @@ nlmclnt_proc(struct inode *inode, int cmd, struct file_lock *fl)
 	dprintk("lockd: clnt proc returns %d\n", status);
 	return status;
 }
-EXPORT_SYMBOL(nlmclnt_proc);
+EXPORT_SYMBOL_GPL(nlmclnt_proc);
 
 /*
  * Allocate an NLM RPC call struct
@@ -257,7 +244,7 @@ void nlm_release_call(struct nlm_rqst *call)
 
 static void nlmclnt_rpc_release(void *data)
 {
-	return nlm_release_call(data);
+	nlm_release_call(data);
 }
 
 static int nlm_wait_on_grace(wait_queue_head_t *queue)

fs/lockd/xdr.c

@@ -612,8 +612,7 @@ const char *nlmdbg_cookie2a(const struct nlm_cookie *cookie)
 	 * called with BKL held.
 	 */
 	static char buf[2*NLM_MAXCOOKIELEN+1];
-	int i;
-	int len = sizeof(buf);
+	unsigned int i, len = sizeof(buf);
 	char *p = buf;
 
 	len--;	/* allow for trailing \0 */

fs/nfs/callback.c

@@ -73,8 +73,6 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
 	complete(&nfs_callback_info.started);
 
 	for(;;) {
-		char buf[RPC_MAX_ADDRBUFLEN];
-
 		if (signalled()) {
 			if (nfs_callback_info.users == 0)
 				break;
@@ -92,8 +90,6 @@ static void nfs_callback_svc(struct svc_rqst *rqstp)
 					__FUNCTION__, -err);
 			break;
 		}
-		dprintk("%s: request from %s\n", __FUNCTION__,
-				svc_print_addr(rqstp, buf, sizeof(buf)));
 		svc_process(rqstp);
 	}
 
@@ -168,12 +164,11 @@ void nfs_callback_down(void)
 
 static int nfs_callback_authenticate(struct svc_rqst *rqstp)
 {
-	struct sockaddr_in *addr = svc_addr_in(rqstp);
 	struct nfs_client *clp;
 	char buf[RPC_MAX_ADDRBUFLEN];
 
 	/* Don't talk to strangers */
-	clp = nfs_find_client(addr, 4);
+	clp = nfs_find_client(svc_addr(rqstp), 4);
 	if (clp == NULL)
 		return SVC_DROP;
 

fs/nfs/callback.h

@@ -38,7 +38,7 @@ struct cb_compound_hdr_res {
 };
 
 struct cb_getattrargs {
-	struct sockaddr_in *addr;
+	struct sockaddr *addr;
 	struct nfs_fh fh;
 	uint32_t bitmap[2];
 };
@@ -53,7 +53,7 @@ struct cb_getattrres {
 };
 
 struct cb_recallargs {
-	struct sockaddr_in *addr;
+	struct sockaddr *addr;
 	struct nfs_fh fh;
 	nfs4_stateid stateid;
 	uint32_t truncate;

fs/nfs/callback_proc.c

@@ -12,7 +12,9 @@
 #include "delegation.h"
 #include "internal.h"
 
+#ifdef NFS_DEBUG
 #define NFSDBG_FACILITY NFSDBG_CALLBACK
+#endif
  
 __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res)
 {
@@ -20,12 +22,16 @@ __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *
 	struct nfs_delegation *delegation;
 	struct nfs_inode *nfsi;
 	struct inode *inode;
-	
+
 	res->bitmap[0] = res->bitmap[1] = 0;
 	res->status = htonl(NFS4ERR_BADHANDLE);
 	clp = nfs_find_client(args->addr, 4);
 	if (clp == NULL)
 		goto out;
+
+	dprintk("NFS: GETATTR callback request from %s\n",
+		rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
+
 	inode = nfs_delegation_find_inode(clp, &args->fh);
 	if (inode == NULL)
 		goto out_putclient;
@@ -65,23 +71,32 @@ __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
 	clp = nfs_find_client(args->addr, 4);
 	if (clp == NULL)
 		goto out;
-	inode = nfs_delegation_find_inode(clp, &args->fh);
-	if (inode == NULL)
-		goto out_putclient;
-	/* Set up a helper thread to actually return the delegation */
-	switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {
-		case 0:
-			res = 0;
-			break;
-		case -ENOENT:
-			res = htonl(NFS4ERR_BAD_STATEID);
-			break;
-		default:
-			res = htonl(NFS4ERR_RESOURCE);
-	}
-	iput(inode);
-out_putclient:
-	nfs_put_client(clp);
+
+	dprintk("NFS: RECALL callback request from %s\n",
+		rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
+
+	do {
+		struct nfs_client *prev = clp;
+
+		inode = nfs_delegation_find_inode(clp, &args->fh);
+		if (inode != NULL) {
+			/* Set up a helper thread to actually return the delegation */
+			switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {
+				case 0:
+					res = 0;
+					break;
+				case -ENOENT:
+					if (res != 0)
+						res = htonl(NFS4ERR_BAD_STATEID);
+					break;
+				default:
+					res = htonl(NFS4ERR_RESOURCE);
+			}
+			iput(inode);
+		}
+		clp = nfs_find_client_next(prev);
+		nfs_put_client(prev);
+	} while (clp != NULL);
 out:
 	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res));
 	return res;

fs/nfs/callback_xdr.c

@@ -139,7 +139,7 @@ static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound
 	if (unlikely(status != 0))
 		return status;
 	/* We do not like overly long tags! */
-	if (hdr->taglen > CB_OP_TAGLEN_MAXSZ-12 || hdr->taglen < 0) {
+	if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) {
 		printk("NFSv4 CALLBACK %s: client sent tag of length %u\n",
 				__FUNCTION__, hdr->taglen);
 		return htonl(NFS4ERR_RESOURCE);
@@ -176,7 +176,7 @@ static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr
 	status = decode_fh(xdr, &args->fh);
 	if (unlikely(status != 0))
 		goto out;
-	args->addr = svc_addr_in(rqstp);
+	args->addr = svc_addr(rqstp);
 	status = decode_bitmap(xdr, args->bitmap);
 out:
 	dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(status));
@@ -188,7 +188,7 @@ static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr,
 	__be32 *p;
 	__be32 status;
 
-	args->addr = svc_addr_in(rqstp);
+	args->addr = svc_addr(rqstp);
 	status = decode_stateid(xdr, &args->stateid);
 	if (unlikely(status != 0))
 		goto out;

fs/nfs/client.c

@@ -34,6 +34,8 @@
 #include <linux/nfs_idmap.h>
 #include <linux/vfs.h>
 #include <linux/inet.h>
+#include <linux/in6.h>
+#include <net/ipv6.h>
 #include <linux/nfs_xdr.h>
 
 #include <asm/system.h>
@@ -93,22 +95,30 @@ struct rpc_program		nfsacl_program = {
 };
 #endif  /* CONFIG_NFS_V3_ACL */
 
+struct nfs_client_initdata {
+	const char *hostname;
+	const struct sockaddr *addr;
+	size_t addrlen;
+	const struct nfs_rpc_ops *rpc_ops;
+	int proto;
+};
+
 /*
  * Allocate a shared client record
  *
  * Since these are allocated/deallocated very rarely, we don't
  * bother putting them in a slab cache...
  */
-static struct nfs_client *nfs_alloc_client(const char *hostname,
-					   const struct sockaddr_in *addr,
-					   int nfsversion)
+static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_init)
 {
 	struct nfs_client *clp;
 
 	if ((clp = kzalloc(sizeof(*clp), GFP_KERNEL)) == NULL)
 		goto error_0;
 
-	if (nfsversion == 4) {
+	clp->rpc_ops = cl_init->rpc_ops;
+
+	if (cl_init->rpc_ops->version == 4) {
 		if (nfs_callback_up() < 0)
 			goto error_2;
 		__set_bit(NFS_CS_CALLBACK, &clp->cl_res_state);
@@ -117,11 +127,11 @@ static struct nfs_client *nfs_alloc_client(const char *hostname,
 	atomic_set(&clp->cl_count, 1);
 	clp->cl_cons_state = NFS_CS_INITING;
 
-	clp->cl_nfsversion = nfsversion;
-	memcpy(&clp->cl_addr, addr, sizeof(clp->cl_addr));
+	memcpy(&clp->cl_addr, cl_init->addr, cl_init->addrlen);
+	clp->cl_addrlen = cl_init->addrlen;
 
-	if (hostname) {
-		clp->cl_hostname = kstrdup(hostname, GFP_KERNEL);
+	if (cl_init->hostname) {
+		clp->cl_hostname = kstrdup(cl_init->hostname, GFP_KERNEL);
 		if (!clp->cl_hostname)
 			goto error_3;
 	}
@@ -129,6 +139,8 @@ static struct nfs_client *nfs_alloc_client(const char *hostname,
 	INIT_LIST_HEAD(&clp->cl_superblocks);
 	clp->cl_rpcclient = ERR_PTR(-EINVAL);
 
+	clp->cl_proto = cl_init->proto;
+
 #ifdef CONFIG_NFS_V4
 	init_rwsem(&clp->cl_sem);
 	INIT_LIST_HEAD(&clp->cl_delegations);
@@ -166,7 +178,7 @@ static void nfs4_shutdown_client(struct nfs_client *clp)
  */
 static void nfs_free_client(struct nfs_client *clp)
 {
-	dprintk("--> nfs_free_client(%d)\n", clp->cl_nfsversion);
+	dprintk("--> nfs_free_client(%u)\n", clp->rpc_ops->version);
 
 	nfs4_shutdown_client(clp);
 
@@ -203,76 +215,148 @@ void nfs_put_client(struct nfs_client *clp)
 	}
 }
 
+static int nfs_sockaddr_match_ipaddr4(const struct sockaddr_in *sa1,
+				 const struct sockaddr_in *sa2)
+{
+	return sa1->sin_addr.s_addr == sa2->sin_addr.s_addr;
+}
+
+static int nfs_sockaddr_match_ipaddr6(const struct sockaddr_in6 *sa1,
+				 const struct sockaddr_in6 *sa2)
+{
+	return ipv6_addr_equal(&sa1->sin6_addr, &sa2->sin6_addr);
+}
+
+static int nfs_sockaddr_match_ipaddr(const struct sockaddr *sa1,
+				 const struct sockaddr *sa2)
+{
+	switch (sa1->sa_family) {
+	case AF_INET:
+		return nfs_sockaddr_match_ipaddr4((const struct sockaddr_in *)sa1,
+				(const struct sockaddr_in *)sa2);
+	case AF_INET6:
+		return nfs_sockaddr_match_ipaddr6((const struct sockaddr_in6 *)sa1,
+				(const struct sockaddr_in6 *)sa2);
+	}
+	BUG();
+}
+
 /*
- * Find a client by address
- * - caller must hold nfs_client_lock
+ * Find a client by IP address and protocol version
+ * - returns NULL if no such client
  */
-static struct nfs_client *__nfs_find_client(const struct sockaddr_in *addr, int nfsversion, int match_port)
+struct nfs_client *nfs_find_client(const struct sockaddr *addr, u32 nfsversion)
 {
 	struct nfs_client *clp;
 
+	spin_lock(&nfs_client_lock);
 	list_for_each_entry(clp, &nfs_client_list, cl_share_link) {
+		struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
+
 		/* Don't match clients that failed to initialise properly */
-		if (clp->cl_cons_state < 0)
+		if (clp->cl_cons_state != NFS_CS_READY)
 			continue;
 
 		/* Different NFS versions cannot share the same nfs_client */
-		if (clp->cl_nfsversion != nfsversion)
+		if (clp->rpc_ops->version != nfsversion)
 			continue;
 
-		if (memcmp(&clp->cl_addr.sin_addr, &addr->sin_addr,
-			   sizeof(clp->cl_addr.sin_addr)) != 0)
+		if (addr->sa_family != clap->sa_family)
+			continue;
+		/* Match only the IP address, not the port number */
+		if (!nfs_sockaddr_match_ipaddr(addr, clap))
 			continue;
 
-		if (!match_port || clp->cl_addr.sin_port == addr->sin_port)
-			goto found;
+		atomic_inc(&clp->cl_count);
+		spin_unlock(&nfs_client_lock);
+		return clp;
 	}
-
+	spin_unlock(&nfs_client_lock);
 	return NULL;
-
-found:
-	atomic_inc(&clp->cl_count);
-	return clp;
 }
 
 /*
  * Find a client by IP address and protocol version
  * - returns NULL if no such client
  */
-struct nfs_client *nfs_find_client(const struct sockaddr_in *addr, int nfsversion)
+struct nfs_client *nfs_find_client_next(struct nfs_client *clp)
 {
-	struct nfs_client *clp;
+	struct sockaddr *sap = (struct sockaddr *)&clp->cl_addr;
+	u32 nfsvers = clp->rpc_ops->version;
 
 	spin_lock(&nfs_client_lock);
-	clp = __nfs_find_client(addr, nfsversion, 0);
+	list_for_each_entry_continue(clp, &nfs_client_list, cl_share_link) {
+		struct sockaddr *clap = (struct sockaddr *)&clp->cl_addr;
+
+		/* Don't match clients that failed to initialise properly */
+		if (clp->cl_cons_state != NFS_CS_READY)
+			continue;
+
+		/* Different NFS versions cannot share the same nfs_client */
+		if (clp->rpc_ops->version != nfsvers)
+			continue;
+
+		if (sap->sa_family != clap->sa_family)
+			continue;
+		/* Match only the IP address, not the port number */
+		if (!nfs_sockaddr_match_ipaddr(sap, clap))
+			continue;
+
+		atomic_inc(&clp->cl_count);
+		spin_unlock(&nfs_client_lock);
+		return clp;
+	}
 	spin_unlock(&nfs_client_lock);
-	if (clp != NULL && clp->cl_cons_state != NFS_CS_READY) {
-		nfs_put_client(clp);
-		clp = NULL;
+	return NULL;
+}
+
+/*
+ * Find an nfs_client on the list that matches the initialisation data
+ * that is supplied.
+ */
+static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *data)
+{
+	struct nfs_client *clp;
+
+	list_for_each_entry(clp, &nfs_client_list, cl_share_link) {
+		/* Don't match clients that failed to initialise properly */
+		if (clp->cl_cons_state < 0)
+			continue;
+
+		/* Different NFS versions cannot share the same nfs_client */
+		if (clp->rpc_ops != data->rpc_ops)
+			continue;
+
+		if (clp->cl_proto != data->proto)
+			continue;
+
+		/* Match the full socket address */
+		if (memcmp(&clp->cl_addr, data->addr, sizeof(clp->cl_addr)) != 0)
+			continue;
+
+		atomic_inc(&clp->cl_count);
+		return clp;
 	}
-	return clp;
+	return NULL;
 }
 
 /*
  * Look up a client by IP address and protocol version
  * - creates a new record if one doesn't yet exist
  */
-static struct nfs_client *nfs_get_client(const char *hostname,
-					 const struct sockaddr_in *addr,
-					 int nfsversion)
+static struct nfs_client *nfs_get_client(const struct nfs_client_initdata *cl_init)
 {
 	struct nfs_client *clp, *new = NULL;
 	int error;
 
-	dprintk("--> nfs_get_client(%s,"NIPQUAD_FMT":%d,%d)\n",
-		hostname ?: "", NIPQUAD(addr->sin_addr),
-		addr->sin_port, nfsversion);
+	dprintk("--> nfs_get_client(%s,v%u)\n",
+		cl_init->hostname ?: "", cl_init->rpc_ops->version);
 
 	/* see if the client already exists */
 	do {
 		spin_lock(&nfs_client_lock);
 
-		clp = __nfs_find_client(addr, nfsversion, 1);
+		clp = nfs_match_client(cl_init);
 		if (clp)
 			goto found_client;
 		if (new)
@@ -280,7 +364,7 @@ static struct nfs_client *nfs_get_client(const char *hostname,
 
 		spin_unlock(&nfs_client_lock);
 
-		new = nfs_alloc_client(hostname, addr, nfsversion);
+		new = nfs_alloc_client(cl_init);
 	} while (new);
 
 	return ERR_PTR(-ENOMEM);
@@ -344,12 +428,16 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
 	switch (proto) {
 	case XPRT_TRANSPORT_TCP:
 	case XPRT_TRANSPORT_RDMA:
-		if (!to->to_initval)
+		if (to->to_initval == 0)
 			to->to_initval = 60 * HZ;
 		if (to->to_initval > NFS_MAX_TCP_TIMEOUT)
 			to->to_initval = NFS_MAX_TCP_TIMEOUT;
 		to->to_increment = to->to_initval;
 		to->to_maxval = to->to_initval + (to->to_increment * to->to_retries);
+		if (to->to_maxval > NFS_MAX_TCP_TIMEOUT)
+			to->to_maxval = NFS_MAX_TCP_TIMEOUT;
+		if (to->to_maxval < to->to_initval)
+			to->to_maxval = to->to_initval;
 		to->to_exponential = 0;
 		break;
 	case XPRT_TRANSPORT_UDP:
@@ -367,19 +455,17 @@ static void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
 /*
  * Create an RPC client handle
  */
-static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
-						unsigned int timeo,
-						unsigned int retrans,
-						rpc_authflavor_t flavor,
-						int flags)
+static int nfs_create_rpc_client(struct nfs_client *clp,
+				 const struct rpc_timeout *timeparms,
+				 rpc_authflavor_t flavor,
+				 int flags)
 {
-	struct rpc_timeout	timeparms;
 	struct rpc_clnt		*clnt = NULL;
 	struct rpc_create_args args = {
-		.protocol	= proto,
+		.protocol	= clp->cl_proto,
 		.address	= (struct sockaddr *)&clp->cl_addr,
-		.addrsize	= sizeof(clp->cl_addr),
-		.timeout	= &timeparms,
+		.addrsize	= clp->cl_addrlen,
+		.timeout	= timeparms,
 		.servername	= clp->cl_hostname,
 		.program	= &nfs_program,
 		.version	= clp->rpc_ops->version,
@@ -390,10 +476,6 @@ static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
 	if (!IS_ERR(clp->cl_rpcclient))
 		return 0;
 
-	nfs_init_timeout_values(&timeparms, proto, timeo, retrans);
-	clp->retrans_timeo = timeparms.to_initval;
-	clp->retrans_count = timeparms.to_retries;
-
 	clnt = rpc_create(&args);
 	if (IS_ERR(clnt)) {
 		dprintk("%s: cannot create RPC client. Error = %ld\n",
@@ -411,7 +493,7 @@ static int nfs_create_rpc_client(struct nfs_client *clp, int proto,
 static void nfs_destroy_server(struct nfs_server *server)
 {
 	if (!(server->flags & NFS_MOUNT_NONLM))
-		lockd_down();	/* release rpc.lockd */
+		nlmclnt_done(server->nlm_host);
 }
 
 /*
@@ -419,20 +501,29 @@ static void nfs_destroy_server(struct nfs_server *server)
  */
 static int nfs_start_lockd(struct nfs_server *server)
 {
-	int error = 0;
+	struct nlm_host *host;
+	struct nfs_client *clp = server->nfs_client;
+	struct nlmclnt_initdata nlm_init = {
+		.hostname	= clp->cl_hostname,
+		.address	= (struct sockaddr *)&clp->cl_addr,
+		.addrlen	= clp->cl_addrlen,
+		.protocol	= server->flags & NFS_MOUNT_TCP ?
+						IPPROTO_TCP : IPPROTO_UDP,
+		.nfs_version	= clp->rpc_ops->version,
+	};
 
-	if (server->nfs_client->cl_nfsversion > 3)
-		goto out;
+	if (nlm_init.nfs_version > 3)
+		return 0;
 	if (server->flags & NFS_MOUNT_NONLM)
-		goto out;
-	error = lockd_up((server->flags & NFS_MOUNT_TCP) ?
-			IPPROTO_TCP : IPPROTO_UDP);
-	if (error < 0)
-		server->flags |= NFS_MOUNT_NONLM;
-	else
-		server->destroy = nfs_destroy_server;
-out:
-	return error;
+		return 0;
+
+	host = nlmclnt_init(&nlm_init);
+	if (IS_ERR(host))
+		return PTR_ERR(host);
+
+	server->nlm_host = host;
+	server->destroy = nfs_destroy_server;
+	return 0;
 }
 
 /*
@@ -441,7 +532,7 @@ out:
 #ifdef CONFIG_NFS_V3_ACL
 static void nfs_init_server_aclclient(struct nfs_server *server)
 {
-	if (server->nfs_client->cl_nfsversion != 3)
+	if (server->nfs_client->rpc_ops->version != 3)
 		goto out_noacl;
 	if (server->flags & NFS_MOUNT_NOACL)
 		goto out_noacl;
@@ -468,7 +559,9 @@ static inline void nfs_init_server_aclclient(struct nfs_server *server)
 /*
  * Create a general RPC client
  */
-static int nfs_init_server_rpcclient(struct nfs_server *server, rpc_authflavor_t pseudoflavour)
+static int nfs_init_server_rpcclient(struct nfs_server *server,
+		const struct rpc_timeout *timeo,
+		rpc_authflavor_t pseudoflavour)
 {
 	struct nfs_client *clp = server->nfs_client;
 
@@ -478,6 +571,11 @@ static int nfs_init_server_rpcclient(struct nfs_server *server, rpc_authflavor_t
 		return PTR_ERR(server->client);
 	}
 
+	memcpy(&server->client->cl_timeout_default,
+			timeo,
+			sizeof(server->client->cl_timeout_default));
+	server->client->cl_timeout = &server->client->cl_timeout_default;
+
 	if (pseudoflavour != clp->cl_rpcclient->cl_auth->au_flavor) {
 		struct rpc_auth *auth;
 
@@ -502,6 +600,7 @@ static int nfs_init_server_rpcclient(struct nfs_server *server, rpc_authflavor_t
  * Initialise an NFS2 or NFS3 client
  */
 static int nfs_init_client(struct nfs_client *clp,
+			   const struct rpc_timeout *timeparms,
 			   const struct nfs_parsed_mount_data *data)
 {
 	int error;
@@ -512,18 +611,11 @@ static int nfs_init_client(struct nfs_client *clp,
 		return 0;
 	}
 
-	/* Check NFS protocol revision and initialize RPC op vector */
-	clp->rpc_ops = &nfs_v2_clientops;
-#ifdef CONFIG_NFS_V3
-	if (clp->cl_nfsversion == 3)
-		clp->rpc_ops = &nfs_v3_clientops;
-#endif
 	/*
 	 * Create a client RPC handle for doing FSSTAT with UNIX auth only
 	 * - RFC 2623, sec 2.3.2
 	 */
-	error = nfs_create_rpc_client(clp, data->nfs_server.protocol,
-				data->timeo, data->retrans, RPC_AUTH_UNIX, 0);
+	error = nfs_create_rpc_client(clp, timeparms, RPC_AUTH_UNIX, 0);
 	if (error < 0)
 		goto error;
 	nfs_mark_client_ready(clp, NFS_CS_READY);
@@ -541,25 +633,34 @@ error:
 static int nfs_init_server(struct nfs_server *server,
 			   const struct nfs_parsed_mount_data *data)
 {
+	struct nfs_client_initdata cl_init = {
+		.hostname = data->nfs_server.hostname,
+		.addr = (const struct sockaddr *)&data->nfs_server.address,
+		.addrlen = data->nfs_server.addrlen,
+		.rpc_ops = &nfs_v2_clientops,
+		.proto = data->nfs_server.protocol,
+	};
+	struct rpc_timeout timeparms;
 	struct nfs_client *clp;
-	int error, nfsvers = 2;
+	int error;
 
 	dprintk("--> nfs_init_server()\n");
 
 #ifdef CONFIG_NFS_V3
 	if (data->flags & NFS_MOUNT_VER3)
-		nfsvers = 3;
+		cl_init.rpc_ops = &nfs_v3_clientops;
 #endif
 
 	/* Allocate or find a client reference we can use */
-	clp = nfs_get_client(data->nfs_server.hostname,
-				&data->nfs_server.address, nfsvers);
+	clp = nfs_get_client(&cl_init);
 	if (IS_ERR(clp)) {
 		dprintk("<-- nfs_init_server() = error %ld\n", PTR_ERR(clp));
 		return PTR_ERR(clp);
 	}
 
-	error = nfs_init_client(clp, data);
+	nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
+			data->timeo, data->retrans);
+	error = nfs_init_client(clp, &timeparms, data);
 	if (error < 0)
 		goto error;
 
@@ -583,7 +684,7 @@ static int nfs_init_server(struct nfs_server *server,
 	if (error < 0)
 		goto error;
 
-	error = nfs_init_server_rpcclient(server, data->auth_flavors[0]);
+	error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]);
 	if (error < 0)
 		goto error;
 
@@ -729,6 +830,9 @@ static struct nfs_server *nfs_alloc_server(void)
 	INIT_LIST_HEAD(&server->client_link);
 	INIT_LIST_HEAD(&server->master_link);
 
+	init_waitqueue_head(&server->active_wq);
+	atomic_set(&server->active, 0);
+
 	server->io_stats = nfs_alloc_iostats();
 	if (!server->io_stats) {
 		kfree(server);
@@ -840,7 +944,7 @@ error:
  * Initialise an NFS4 client record
  */
 static int nfs4_init_client(struct nfs_client *clp,
-		int proto, int timeo, int retrans,
+		const struct rpc_timeout *timeparms,
 		const char *ip_addr,
 		rpc_authflavor_t authflavour)
 {
@@ -855,7 +959,7 @@ static int nfs4_init_client(struct nfs_client *clp,
 	/* Check NFS protocol revision and initialize RPC op vector */
 	clp->rpc_ops = &nfs_v4_clientops;
 
-	error = nfs_create_rpc_client(clp, proto, timeo, retrans, authflavour,
+	error = nfs_create_rpc_client(clp, timeparms, authflavour,
 					RPC_CLNT_CREATE_DISCRTRY);
 	if (error < 0)
 		goto error;
@@ -882,23 +986,32 @@ error:
  * Set up an NFS4 client
  */
 static int nfs4_set_client(struct nfs_server *server,
-		const char *hostname, const struct sockaddr_in *addr,
+		const char *hostname,
+		const struct sockaddr *addr,
+		const size_t addrlen,
 		const char *ip_addr,
 		rpc_authflavor_t authflavour,
-		int proto, int timeo, int retrans)
+		int proto, const struct rpc_timeout *timeparms)
 {
+	struct nfs_client_initdata cl_init = {
+		.hostname = hostname,
+		.addr = addr,
+		.addrlen = addrlen,
+		.rpc_ops = &nfs_v4_clientops,
+		.proto = proto,
+	};
 	struct nfs_client *clp;
 	int error;
 
 	dprintk("--> nfs4_set_client()\n");
 
 	/* Allocate or find a client reference we can use */
-	clp = nfs_get_client(hostname, addr, 4);
+	clp = nfs_get_client(&cl_init);
 	if (IS_ERR(clp)) {
 		error = PTR_ERR(clp);
 		goto error;
 	}
-	error = nfs4_init_client(clp, proto, timeo, retrans, ip_addr, authflavour);
+	error = nfs4_init_client(clp, timeparms, ip_addr, authflavour);
 	if (error < 0)
 		goto error_put;
 
@@ -919,10 +1032,26 @@ error:
 static int nfs4_init_server(struct nfs_server *server,
 		const struct nfs_parsed_mount_data *data)
 {
+	struct rpc_timeout timeparms;
 	int error;
 
 	dprintk("--> nfs4_init_server()\n");
 
+	nfs_init_timeout_values(&timeparms, data->nfs_server.protocol,
+			data->timeo, data->retrans);
+
+	/* Get a client record */
+	error = nfs4_set_client(server,
+			data->nfs_server.hostname,
+			(const struct sockaddr *)&data->nfs_server.address,
+			data->nfs_server.addrlen,
+			data->client_address,
+			data->auth_flavors[0],
+			data->nfs_server.protocol,
+			&timeparms);
+	if (error < 0)
+		goto error;
+
 	/* Initialise the client representation from the mount data */
 	server->flags = data->flags & NFS_MOUNT_FLAGMASK;
 	server->caps |= NFS_CAP_ATOMIC_OPEN;
@@ -937,8 +1066,9 @@ static int nfs4_init_server(struct nfs_server *server,
 	server->acdirmin = data->acdirmin * HZ;
 	server->acdirmax = data->acdirmax * HZ;
 
-	error = nfs_init_server_rpcclient(server, data->auth_flavors[0]);
+	error = nfs_init_server_rpcclient(server, &timeparms, data->auth_flavors[0]);
 
+error:
 	/* Done */
 	dprintk("<-- nfs4_init_server() = %d\n", error);
 	return error;
@@ -961,17 +1091,6 @@ struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
 	if (!server)
 		return ERR_PTR(-ENOMEM);
 
-	/* Get a client record */
-	error = nfs4_set_client(server,
-			data->nfs_server.hostname,
-			&data->nfs_server.address,
-			data->client_address,
-			data->auth_flavors[0],
-			data->nfs_server.protocol,
-			data->timeo, data->retrans);
-	if (error < 0)
-		goto error;
-
 	/* set up the general RPC client */
 	error = nfs4_init_server(server, data);
 	if (error < 0)
@@ -1039,12 +1158,13 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
 
 	/* Get a client representation.
 	 * Note: NFSv4 always uses TCP, */
-	error = nfs4_set_client(server, data->hostname, data->addr,
-			parent_client->cl_ipaddr,
-			data->authflavor,
-			parent_server->client->cl_xprt->prot,
-			parent_client->retrans_timeo,
-			parent_client->retrans_count);
+	error = nfs4_set_client(server, data->hostname,
+				data->addr,
+				data->addrlen,
+				parent_client->cl_ipaddr,
+				data->authflavor,
+				parent_server->client->cl_xprt->prot,
+				parent_server->client->cl_timeout);
 	if (error < 0)
 		goto error;
 
@@ -1052,7 +1172,7 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
 	nfs_server_copy_userdata(server, parent_server);
 	server->caps |= NFS_CAP_ATOMIC_OPEN;
 
-	error = nfs_init_server_rpcclient(server, data->authflavor);
+	error = nfs_init_server_rpcclient(server, parent_server->client->cl_timeout, data->authflavor);
 	if (error < 0)
 		goto error;
 
@@ -1121,7 +1241,9 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source,
 
 	server->fsid = fattr->fsid;
 
-	error = nfs_init_server_rpcclient(server, source->client->cl_auth->au_flavor);
+	error = nfs_init_server_rpcclient(server,
+			source->client->cl_timeout,
+			source->client->cl_auth->au_flavor);
 	if (error < 0)
 		goto out_free_server;
 	if (!IS_ERR(source->client_acl))
@@ -1263,10 +1385,10 @@ static int nfs_server_list_show(struct seq_file *m, void *v)
 	/* display one transport per line on subsequent lines */
 	clp = list_entry(v, struct nfs_client, cl_share_link);
 
-	seq_printf(m, "v%d %02x%02x%02x%02x %4hx %3d %s\n",
-		   clp->cl_nfsversion,
-		   NIPQUAD(clp->cl_addr.sin_addr),
-		   ntohs(clp->cl_addr.sin_port),
+	seq_printf(m, "v%u %s %s %3d %s\n",
+		   clp->rpc_ops->version,
+		   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
+		   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
 		   atomic_read(&clp->cl_count),
 		   clp->cl_hostname);
 
@@ -1342,10 +1464,10 @@ static int nfs_volume_list_show(struct seq_file *m, void *v)
 		 (unsigned long long) server->fsid.major,
 		 (unsigned long long) server->fsid.minor);
 
-	seq_printf(m, "v%d %02x%02x%02x%02x %4hx %-7s %-17s\n",
-		   clp->cl_nfsversion,
-		   NIPQUAD(clp->cl_addr.sin_addr),
-		   ntohs(clp->cl_addr.sin_port),
+	seq_printf(m, "v%u %s %s %-7s %-17s\n",
+		   clp->rpc_ops->version,
+		   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_ADDR),
+		   rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_HEX_PORT),
 		   dev,
 		   fsid);
 

fs/nfs/delegation.c

@@ -125,6 +125,32 @@ void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, st
 	put_rpccred(oldcred);
 }
 
+static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation, int issync)
+{
+	int res = 0;
+
+	res = nfs4_proc_delegreturn(inode, delegation->cred, &delegation->stateid, issync);
+	nfs_free_delegation(delegation);
+	return res;
+}
+
+static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfsi, const nfs4_stateid *stateid)
+{
+	struct nfs_delegation *delegation = rcu_dereference(nfsi->delegation);
+
+	if (delegation == NULL)
+		goto nomatch;
+	if (stateid != NULL && memcmp(delegation->stateid.data, stateid->data,
+				sizeof(delegation->stateid.data)) != 0)
+		goto nomatch;
+	list_del_rcu(&delegation->super_list);
+	nfsi->delegation_state = 0;
+	rcu_assign_pointer(nfsi->delegation, NULL);
+	return delegation;
+nomatch:
+	return NULL;
+}
+
 /*
  * Set up a delegation on an inode
  */
@@ -133,6 +159,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
 	struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
 	struct nfs_inode *nfsi = NFS_I(inode);
 	struct nfs_delegation *delegation;
+	struct nfs_delegation *freeme = NULL;
 	int status = 0;
 
 	delegation = kmalloc(sizeof(*delegation), GFP_KERNEL);
@@ -147,41 +174,45 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
 	delegation->inode = inode;
 
 	spin_lock(&clp->cl_lock);
-	if (rcu_dereference(nfsi->delegation) == NULL) {
-		list_add_rcu(&delegation->super_list, &clp->cl_delegations);
-		nfsi->delegation_state = delegation->type;
-		rcu_assign_pointer(nfsi->delegation, delegation);
-		delegation = NULL;
-	} else {
+	if (rcu_dereference(nfsi->delegation) != NULL) {
 		if (memcmp(&delegation->stateid, &nfsi->delegation->stateid,
-					sizeof(delegation->stateid)) != 0 ||
-				delegation->type != nfsi->delegation->type) {
-			printk("%s: server %u.%u.%u.%u, handed out a duplicate delegation!\n",
-					__FUNCTION__, NIPQUAD(clp->cl_addr.sin_addr));
-			status = -EIO;
+					sizeof(delegation->stateid)) == 0 &&
+				delegation->type == nfsi->delegation->type) {
+			goto out;
+		}
+		/*
+		 * Deal with broken servers that hand out two
+		 * delegations for the same file.
+		 */
+		dfprintk(FILE, "%s: server %s handed out "
+				"a duplicate delegation!\n",
+				__FUNCTION__, clp->cl_hostname);
+		if (delegation->type <= nfsi->delegation->type) {
+			freeme = delegation;
+			delegation = NULL;
+			goto out;
 		}
+		freeme = nfs_detach_delegation_locked(nfsi, NULL);
 	}
+	list_add_rcu(&delegation->super_list, &clp->cl_delegations);
+	nfsi->delegation_state = delegation->type;
+	rcu_assign_pointer(nfsi->delegation, delegation);
+	delegation = NULL;
 
 	/* Ensure we revalidate the attributes and page cache! */
 	spin_lock(&inode->i_lock);
 	nfsi->cache_validity |= NFS_INO_REVAL_FORCED;
 	spin_unlock(&inode->i_lock);
 
+out:
 	spin_unlock(&clp->cl_lock);
 	if (delegation != NULL)
 		nfs_free_delegation(delegation);
+	if (freeme != NULL)
+		nfs_do_return_delegation(inode, freeme, 0);
 	return status;
 }
 
-static int nfs_do_return_delegation(struct inode *inode, struct nfs_delegation *delegation)
-{
-	int res = 0;
-
-	res = nfs4_proc_delegreturn(inode, delegation->cred, &delegation->stateid);
-	nfs_free_delegation(delegation);
-	return res;
-}
-
 /* Sync all data to disk upon delegation return */
 static void nfs_msync_inode(struct inode *inode)
 {
@@ -207,24 +238,28 @@ static int __nfs_inode_return_delegation(struct inode *inode, struct nfs_delegat
 	up_read(&clp->cl_sem);
 	nfs_msync_inode(inode);
 
-	return nfs_do_return_delegation(inode, delegation);
+	return nfs_do_return_delegation(inode, delegation, 1);
 }
 
-static struct nfs_delegation *nfs_detach_delegation_locked(struct nfs_inode *nfsi, const nfs4_stateid *stateid)
+/*
+ * This function returns the delegation without reclaiming opens
+ * or protecting against delegation reclaims.
+ * It is therefore really only safe to be called from
+ * nfs4_clear_inode()
+ */
+void nfs_inode_return_delegation_noreclaim(struct inode *inode)
 {
-	struct nfs_delegation *delegation = rcu_dereference(nfsi->delegation);
+	struct nfs_client *clp = NFS_SERVER(inode)->nfs_client;
+	struct nfs_inode *nfsi = NFS_I(inode);
+	struct nfs_delegation *delegation;
 
-	if (delegation == NULL)
-		goto nomatch;
-	if (stateid != NULL && memcmp(delegation->stateid.data, stateid->data,
-				sizeof(delegation->stateid.data)) != 0)
-		goto nomatch;
-	list_del_rcu(&delegation->super_list);
-	nfsi->delegation_state = 0;
-	rcu_assign_pointer(nfsi->delegation, NULL);
-	return delegation;
-nomatch:
-	return NULL;
+	if (rcu_dereference(nfsi->delegation) != NULL) {
+		spin_lock(&clp->cl_lock);
+		delegation = nfs_detach_delegation_locked(nfsi, NULL);
+		spin_unlock(&clp->cl_lock);
+		if (delegation != NULL)
+			nfs_do_return_delegation(inode, delegation, 0);
+	}
 }
 
 int nfs_inode_return_delegation(struct inode *inode)
@@ -314,8 +349,9 @@ void nfs_expire_all_delegations(struct nfs_client *clp)
 	__module_get(THIS_MODULE);
 	atomic_inc(&clp->cl_count);
 	task = kthread_run(nfs_do_expire_all_delegations, clp,
-			"%u.%u.%u.%u-delegreturn",
-			NIPQUAD(clp->cl_addr.sin_addr));
+				"%s-delegreturn",
+				rpc_peeraddr2str(clp->cl_rpcclient,
+							RPC_DISPLAY_ADDR));
 	if (!IS_ERR(task))
 		return;
 	nfs_put_client(clp);
@@ -386,7 +422,7 @@ static int recall_thread(void *data)
 	nfs_msync_inode(inode);
 
 	if (delegation != NULL)
-		nfs_do_return_delegation(inode, delegation);
+		nfs_do_return_delegation(inode, delegation, 1);
 	iput(inode);
 	module_put_and_exit(0);
 }

fs/nfs/delegation.h

@@ -29,6 +29,7 @@ int nfs_inode_set_delegation(struct inode *inode, struct rpc_cred *cred, struct
 void nfs_inode_reclaim_delegation(struct inode *inode, struct rpc_cred *cred, struct nfs_openres *res);
 int nfs_inode_return_delegation(struct inode *inode);
 int nfs_async_inode_return_delegation(struct inode *inode, const nfs4_stateid *stateid);
+void nfs_inode_return_delegation_noreclaim(struct inode *inode);
 
 struct inode *nfs_delegation_find_inode(struct nfs_client *clp, const struct nfs_fh *fhandle);
 void nfs_return_all_delegations(struct super_block *sb);
@@ -39,7 +40,7 @@ void nfs_delegation_mark_reclaim(struct nfs_client *clp);
 void nfs_delegation_reap_unclaimed(struct nfs_client *clp);
 
 /* NFSv4 delegation-related procedures */
-int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid);
+int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync);
 int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state *state, const nfs4_stateid *stateid);
 int nfs4_lock_delegation_recall(struct nfs4_state *state, struct file_lock *fl);
 int nfs4_copy_delegation_stateid(nfs4_stateid *dst, struct inode *inode);

fs/nfs/dir.c

@@ -192,7 +192,7 @@ int nfs_readdir_filler(nfs_readdir_descriptor_t *desc, struct page *page)
 		/* We requested READDIRPLUS, but the server doesn't grok it */
 		if (error == -ENOTSUPP && desc->plus) {
 			NFS_SERVER(inode)->caps &= ~NFS_CAP_READDIRPLUS;
-			clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
+			clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
 			desc->plus = 0;
 			goto again;
 		}
@@ -537,12 +537,6 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 
 	lock_kernel();
 
-	res = nfs_revalidate_mapping_nolock(inode, filp->f_mapping);
-	if (res < 0) {
-		unlock_kernel();
-		return res;
-	}
-
 	/*
 	 * filp->f_pos points to the dirent entry number.
 	 * *desc->dir_cookie has the cookie for the next entry. We have
@@ -564,6 +558,10 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 	desc->entry = &my_entry;
 
 	nfs_block_sillyrename(dentry);
+	res = nfs_revalidate_mapping_nolock(inode, filp->f_mapping);
+	if (res < 0)
+		goto out;
+
 	while(!desc->entry->eof) {
 		res = readdir_search_pagecache(desc);
 
@@ -579,7 +577,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 			break;
 		}
 		if (res == -ETOOSMALL && desc->plus) {
-			clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
+			clear_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
 			nfs_zap_caches(inode);
 			desc->plus = 0;
 			desc->entry->eof = 0;
@@ -594,6 +592,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 			break;
 		}
 	}
+out:
 	nfs_unblock_sillyrename(dentry);
 	unlock_kernel();
 	if (res > 0)
@@ -639,6 +638,21 @@ static int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
 	return 0;
 }
 
+/**
+ * nfs_force_lookup_revalidate - Mark the directory as having changed
+ * @dir - pointer to directory inode
+ *
+ * This forces the revalidation code in nfs_lookup_revalidate() to do a
+ * full lookup on all child dentries of 'dir' whenever a change occurs
+ * on the server that might have invalidated our dcache.
+ *
+ * The caller should be holding dir->i_lock
+ */
+void nfs_force_lookup_revalidate(struct inode *dir)
+{
+	NFS_I(dir)->cache_change_attribute = jiffies;
+}
+
 /*
  * A check for whether or not the parent directory has changed.
  * In the case it has, we assume that the dentries are untrustworthy
@@ -827,6 +841,10 @@ static int nfs_dentry_delete(struct dentry *dentry)
 		dentry->d_parent->d_name.name, dentry->d_name.name,
 		dentry->d_flags);
 
+	/* Unhash any dentry with a stale inode */
+	if (dentry->d_inode != NULL && NFS_STALE(dentry->d_inode))
+		return 1;
+
 	if (dentry->d_flags & DCACHE_NFSFS_RENAMED) {
 		/* Unhash it, so that ->d_iput() would be called */
 		return 1;
@@ -846,7 +864,6 @@ static int nfs_dentry_delete(struct dentry *dentry)
  */
 static void nfs_dentry_iput(struct dentry *dentry, struct inode *inode)
 {
-	nfs_inode_return_delegation(inode);
 	if (S_ISDIR(inode->i_mode))
 		/* drop any readdir cache as it could easily be old */
 		NFS_I(inode)->cache_validity |= NFS_INO_INVALID_DATA;
@@ -1268,6 +1285,12 @@ out_err:
 	return error;
 }
 
+static void nfs_dentry_handle_enoent(struct dentry *dentry)
+{
+	if (dentry->d_inode != NULL && !d_unhashed(dentry))
+		d_delete(dentry);
+}
+
 static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
 {
 	int error;
@@ -1280,6 +1303,8 @@ static int nfs_rmdir(struct inode *dir, struct dentry *dentry)
 	/* Ensure the VFS deletes this inode */
 	if (error == 0 && dentry->d_inode != NULL)
 		clear_nlink(dentry->d_inode);
+	else if (error == -ENOENT)
+		nfs_dentry_handle_enoent(dentry);
 	unlock_kernel();
 
 	return error;
@@ -1386,6 +1411,8 @@ static int nfs_safe_remove(struct dentry *dentry)
 		nfs_mark_for_revalidate(inode);
 	} else
 		error = NFS_PROTO(dir)->remove(dir, &dentry->d_name);
+	if (error == -ENOENT)
+		nfs_dentry_handle_enoent(dentry);
 out:
 	return error;
 }
@@ -1422,7 +1449,7 @@ static int nfs_unlink(struct inode *dir, struct dentry *dentry)
 	spin_unlock(&dentry->d_lock);
 	spin_unlock(&dcache_lock);
 	error = nfs_safe_remove(dentry);
-	if (!error) {
+	if (!error || error == -ENOENT) {
 		nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
 	} else if (need_rehash)
 		d_rehash(dentry);
@@ -1635,7 +1662,8 @@ out:
 		d_move(old_dentry, new_dentry);
 		nfs_set_verifier(new_dentry,
 					nfs_save_change_attribute(new_dir));
-	}
+	} else if (error == -ENOENT)
+		nfs_dentry_handle_enoent(old_dentry);
 
 	/* new dentry created? */
 	if (dentry)
@@ -1666,13 +1694,19 @@ int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask)
 restart:
 	spin_lock(&nfs_access_lru_lock);
 	list_for_each_entry(nfsi, &nfs_access_lru_list, access_cache_inode_lru) {
+		struct rw_semaphore *s_umount;
 		struct inode *inode;
 
 		if (nr_to_scan-- == 0)
 			break;
+		s_umount = &nfsi->vfs_inode.i_sb->s_umount;
+		if (!down_read_trylock(s_umount))
+			continue;
 		inode = igrab(&nfsi->vfs_inode);
-		if (inode == NULL)
+		if (inode == NULL) {
+			up_read(s_umount);
 			continue;
+		}
 		spin_lock(&inode->i_lock);
 		if (list_empty(&nfsi->access_cache_entry_lru))
 			goto remove_lru_entry;
@@ -1691,6 +1725,7 @@ remove_lru_entry:
 		spin_unlock(&inode->i_lock);
 		spin_unlock(&nfs_access_lru_lock);
 		iput(inode);
+		up_read(s_umount);
 		goto restart;
 	}
 	spin_unlock(&nfs_access_lru_lock);
@@ -1731,7 +1766,7 @@ static void __nfs_access_zap_cache(struct inode *inode)
 void nfs_access_zap_cache(struct inode *inode)
 {
 	/* Remove from global LRU init */
-	if (test_and_clear_bit(NFS_INO_ACL_LRU_SET, &NFS_FLAGS(inode))) {
+	if (test_and_clear_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) {
 		spin_lock(&nfs_access_lru_lock);
 		list_del_init(&NFS_I(inode)->access_cache_inode_lru);
 		spin_unlock(&nfs_access_lru_lock);
@@ -1845,7 +1880,7 @@ static void nfs_access_add_cache(struct inode *inode, struct nfs_access_entry *s
 	smp_mb__after_atomic_inc();
 
 	/* Add inode to global LRU list */
-	if (!test_and_set_bit(NFS_INO_ACL_LRU_SET, &NFS_FLAGS(inode))) {
+	if (!test_and_set_bit(NFS_INO_ACL_LRU_SET, &NFS_I(inode)->flags)) {
 		spin_lock(&nfs_access_lru_lock);
 		list_add_tail(&NFS_I(inode)->access_cache_inode_lru, &nfs_access_lru_list);
 		spin_unlock(&nfs_access_lru_lock);

fs/nfs/direct.c

@@ -188,12 +188,17 @@ static void nfs_direct_req_release(struct nfs_direct_req *dreq)
 static ssize_t nfs_direct_wait(struct nfs_direct_req *dreq)
 {
 	ssize_t result = -EIOCBQUEUED;
+	struct rpc_clnt *clnt;
+	sigset_t oldset;
 
 	/* Async requests don't wait here */
 	if (dreq->iocb)
 		goto out;
 
+	clnt = NFS_CLIENT(dreq->inode);
+	rpc_clnt_sigmask(clnt, &oldset);
 	result = wait_for_completion_interruptible(&dreq->completion);
+	rpc_clnt_sigunmask(clnt, &oldset);
 
 	if (!result)
 		result = dreq->error;
@@ -272,6 +277,16 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
 	unsigned long user_addr = (unsigned long)iov->iov_base;
 	size_t count = iov->iov_len;
 	size_t rsize = NFS_SERVER(inode)->rsize;
+	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_cred = ctx->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = NFS_CLIENT(inode),
+		.rpc_message = &msg,
+		.callback_ops = &nfs_read_direct_ops,
+		.flags = RPC_TASK_ASYNC,
+	};
 	unsigned int pgbase;
 	int result;
 	ssize_t started = 0;
@@ -311,7 +326,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
 
 		data->req = (struct nfs_page *) dreq;
 		data->inode = inode;
-		data->cred = ctx->cred;
+		data->cred = msg.rpc_cred;
 		data->args.fh = NFS_FH(inode);
 		data->args.context = ctx;
 		data->args.offset = pos;
@@ -321,14 +336,16 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
 		data->res.fattr = &data->fattr;
 		data->res.eof = 0;
 		data->res.count = bytes;
+		msg.rpc_argp = &data->args;
+		msg.rpc_resp = &data->res;
 
-		rpc_init_task(&data->task, NFS_CLIENT(inode), RPC_TASK_ASYNC,
-				&nfs_read_direct_ops, data);
-		NFS_PROTO(inode)->read_setup(data);
-
-		data->task.tk_cookie = (unsigned long) inode;
+		task_setup_data.task = &data->task;
+		task_setup_data.callback_data = data;
+		NFS_PROTO(inode)->read_setup(data, &msg);
 
-		rpc_execute(&data->task);
+		task = rpc_run_task(&task_setup_data);
+		if (!IS_ERR(task))
+			rpc_put_task(task);
 
 		dprintk("NFS: %5u initiated direct read call "
 			"(req %s/%Ld, %zu bytes @ offset %Lu)\n",
@@ -391,9 +408,7 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov,
 			       unsigned long nr_segs, loff_t pos)
 {
 	ssize_t result = 0;
-	sigset_t oldset;
 	struct inode *inode = iocb->ki_filp->f_mapping->host;
-	struct rpc_clnt *clnt = NFS_CLIENT(inode);
 	struct nfs_direct_req *dreq;
 
 	dreq = nfs_direct_req_alloc();
@@ -405,11 +420,9 @@ static ssize_t nfs_direct_read(struct kiocb *iocb, const struct iovec *iov,
 	if (!is_sync_kiocb(iocb))
 		dreq->iocb = iocb;
 
-	rpc_clnt_sigmask(clnt, &oldset);
 	result = nfs_direct_read_schedule_iovec(dreq, iov, nr_segs, pos);
 	if (!result)
 		result = nfs_direct_wait(dreq);
-	rpc_clnt_sigunmask(clnt, &oldset);
 	nfs_direct_req_release(dreq);
 
 	return result;
@@ -431,6 +444,15 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
 	struct inode *inode = dreq->inode;
 	struct list_head *p;
 	struct nfs_write_data *data;
+	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_cred = dreq->ctx->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = NFS_CLIENT(inode),
+		.callback_ops = &nfs_write_direct_ops,
+		.flags = RPC_TASK_ASYNC,
+	};
 
 	dreq->count = 0;
 	get_dreq(dreq);
@@ -440,6 +462,9 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
 
 		get_dreq(dreq);
 
+		/* Use stable writes */
+		data->args.stable = NFS_FILE_SYNC;
+
 		/*
 		 * Reset data->res.
 		 */
@@ -451,17 +476,18 @@ static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq)
 		 * Reuse data->task; data->args should not have changed
 		 * since the original request was sent.
 		 */
-		rpc_init_task(&data->task, NFS_CLIENT(inode), RPC_TASK_ASYNC,
-				&nfs_write_direct_ops, data);
-		NFS_PROTO(inode)->write_setup(data, FLUSH_STABLE);
-
-		data->task.tk_priority = RPC_PRIORITY_NORMAL;
-		data->task.tk_cookie = (unsigned long) inode;
+		task_setup_data.task = &data->task;
+		task_setup_data.callback_data = data;
+		msg.rpc_argp = &data->args;
+		msg.rpc_resp = &data->res;
+		NFS_PROTO(inode)->write_setup(data, &msg);
 
 		/*
 		 * We're called via an RPC callback, so BKL is already held.
 		 */
-		rpc_execute(&data->task);
+		task = rpc_run_task(&task_setup_data);
+		if (!IS_ERR(task))
+			rpc_put_task(task);
 
 		dprintk("NFS: %5u rescheduled direct write call (req %s/%Ld, %u bytes @ offset %Lu)\n",
 				data->task.tk_pid,
@@ -504,9 +530,23 @@ static const struct rpc_call_ops nfs_commit_direct_ops = {
 static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
 {
 	struct nfs_write_data *data = dreq->commit_data;
+	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_argp = &data->args,
+		.rpc_resp = &data->res,
+		.rpc_cred = dreq->ctx->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.task = &data->task,
+		.rpc_client = NFS_CLIENT(dreq->inode),
+		.rpc_message = &msg,
+		.callback_ops = &nfs_commit_direct_ops,
+		.callback_data = data,
+		.flags = RPC_TASK_ASYNC,
+	};
 
 	data->inode = dreq->inode;
-	data->cred = dreq->ctx->cred;
+	data->cred = msg.rpc_cred;
 
 	data->args.fh = NFS_FH(data->inode);
 	data->args.offset = 0;
@@ -515,18 +555,16 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
 	data->res.fattr = &data->fattr;
 	data->res.verf = &data->verf;
 
-	rpc_init_task(&data->task, NFS_CLIENT(dreq->inode), RPC_TASK_ASYNC,
-				&nfs_commit_direct_ops, data);
-	NFS_PROTO(data->inode)->commit_setup(data, 0);
+	NFS_PROTO(data->inode)->commit_setup(data, &msg);
 
-	data->task.tk_priority = RPC_PRIORITY_NORMAL;
-	data->task.tk_cookie = (unsigned long)data->inode;
 	/* Note: task.tk_ops->rpc_release will free dreq->commit_data */
 	dreq->commit_data = NULL;
 
 	dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
 
-	rpc_execute(&data->task);
+	task = rpc_run_task(&task_setup_data);
+	if (!IS_ERR(task))
+		rpc_put_task(task);
 }
 
 static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode)
@@ -641,6 +679,16 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
 	struct inode *inode = ctx->path.dentry->d_inode;
 	unsigned long user_addr = (unsigned long)iov->iov_base;
 	size_t count = iov->iov_len;
+	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_cred = ctx->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = NFS_CLIENT(inode),
+		.rpc_message = &msg,
+		.callback_ops = &nfs_write_direct_ops,
+		.flags = RPC_TASK_ASYNC,
+	};
 	size_t wsize = NFS_SERVER(inode)->wsize;
 	unsigned int pgbase;
 	int result;
@@ -683,25 +731,27 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
 
 		data->req = (struct nfs_page *) dreq;
 		data->inode = inode;
-		data->cred = ctx->cred;
+		data->cred = msg.rpc_cred;
 		data->args.fh = NFS_FH(inode);
 		data->args.context = ctx;
 		data->args.offset = pos;
 		data->args.pgbase = pgbase;
 		data->args.pages = data->pagevec;
 		data->args.count = bytes;
+		data->args.stable = sync;
 		data->res.fattr = &data->fattr;
 		data->res.count = bytes;
 		data->res.verf = &data->verf;
 
-		rpc_init_task(&data->task, NFS_CLIENT(inode), RPC_TASK_ASYNC,
-				&nfs_write_direct_ops, data);
-		NFS_PROTO(inode)->write_setup(data, sync);
-
-		data->task.tk_priority = RPC_PRIORITY_NORMAL;
-		data->task.tk_cookie = (unsigned long) inode;
+		task_setup_data.task = &data->task;
+		task_setup_data.callback_data = data;
+		msg.rpc_argp = &data->args;
+		msg.rpc_resp = &data->res;
+		NFS_PROTO(inode)->write_setup(data, &msg);
 
-		rpc_execute(&data->task);
+		task = rpc_run_task(&task_setup_data);
+		if (!IS_ERR(task))
+			rpc_put_task(task);
 
 		dprintk("NFS: %5u initiated direct write call "
 			"(req %s/%Ld, %zu bytes @ offset %Lu)\n",
@@ -767,12 +817,10 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
 				size_t count)
 {
 	ssize_t result = 0;
-	sigset_t oldset;
 	struct inode *inode = iocb->ki_filp->f_mapping->host;
-	struct rpc_clnt *clnt = NFS_CLIENT(inode);
 	struct nfs_direct_req *dreq;
 	size_t wsize = NFS_SERVER(inode)->wsize;
-	int sync = 0;
+	int sync = NFS_UNSTABLE;
 
 	dreq = nfs_direct_req_alloc();
 	if (!dreq)
@@ -780,18 +828,16 @@ static ssize_t nfs_direct_write(struct kiocb *iocb, const struct iovec *iov,
 	nfs_alloc_commit_data(dreq);
 
 	if (dreq->commit_data == NULL || count < wsize)
-		sync = FLUSH_STABLE;
+		sync = NFS_FILE_SYNC;
 
 	dreq->inode = inode;
 	dreq->ctx = get_nfs_open_context(nfs_file_open_context(iocb->ki_filp));
 	if (!is_sync_kiocb(iocb))
 		dreq->iocb = iocb;
 
-	rpc_clnt_sigmask(clnt, &oldset);
 	result = nfs_direct_write_schedule_iovec(dreq, iov, nr_segs, pos, sync);
 	if (!result)
 		result = nfs_direct_wait(dreq);
-	rpc_clnt_sigunmask(clnt, &oldset);
 	nfs_direct_req_release(dreq);
 
 	return result;

fs/nfs/file.c

@@ -349,7 +349,9 @@ static int nfs_write_end(struct file *file, struct address_space *mapping,
 	unlock_page(page);
 	page_cache_release(page);
 
-	return status < 0 ? status : copied;
+	if (status < 0)
+		return status;
+	return copied;
 }
 
 static void nfs_invalidate_page(struct page *page, unsigned long offset)
@@ -392,35 +394,27 @@ static int nfs_vm_page_mkwrite(struct vm_area_struct *vma, struct page *page)
 	struct file *filp = vma->vm_file;
 	unsigned pagelen;
 	int ret = -EINVAL;
-	void *fsdata;
 	struct address_space *mapping;
-	loff_t offset;
 
 	lock_page(page);
 	mapping = page->mapping;
-	if (mapping != vma->vm_file->f_path.dentry->d_inode->i_mapping) {
-		unlock_page(page);
-		return -EINVAL;
-	}
+	if (mapping != vma->vm_file->f_path.dentry->d_inode->i_mapping)
+		goto out_unlock;
+
+	ret = 0;
 	pagelen = nfs_page_length(page);
-	offset = (loff_t)page->index << PAGE_CACHE_SHIFT;
-	unlock_page(page);
+	if (pagelen == 0)
+		goto out_unlock;
 
-	/*
-	 * we can use mapping after releasing the page lock, because:
-	 * we hold mmap_sem on the fault path, which should pin the vma
-	 * which should pin the file, which pins the dentry which should
-	 * hold a reference on inode.
-	 */
+	ret = nfs_flush_incompatible(filp, page);
+	if (ret != 0)
+		goto out_unlock;
 
-	if (pagelen) {
-		struct page *page2 = NULL;
-		ret = nfs_write_begin(filp, mapping, offset, pagelen,
-			       	0, &page2, &fsdata);
-		if (!ret)
-			ret = nfs_write_end(filp, mapping, offset, pagelen,
-				       	pagelen, page2, fsdata);
-	}
+	ret = nfs_updatepage(filp, page, 0, pagelen);
+	if (ret == 0)
+		ret = pagelen;
+out_unlock:
+	unlock_page(page);
 	return ret;
 }
 

fs/nfs/idmap.c

@@ -72,39 +72,39 @@ module_param_call(idmap_cache_timeout, param_set_idmap_timeout, param_get_int,
 		 &nfs_idmap_cache_timeout, 0644);
 
 struct idmap_hashent {
-	unsigned long ih_expires;
-	__u32 ih_id;
-	int ih_namelen;
-	char ih_name[IDMAP_NAMESZ];
+	unsigned long		ih_expires;
+	__u32			ih_id;
+	size_t			ih_namelen;
+	char			ih_name[IDMAP_NAMESZ];
 };
 
 struct idmap_hashtable {
-	__u8 h_type;
-	struct idmap_hashent h_entries[IDMAP_HASH_SZ];
+	__u8			h_type;
+	struct idmap_hashent	h_entries[IDMAP_HASH_SZ];
 };
 
 struct idmap {
-	struct dentry        *idmap_dentry;
-	wait_queue_head_t     idmap_wq;
-	struct idmap_msg      idmap_im;
-	struct mutex          idmap_lock;    /* Serializes upcalls */
-	struct mutex          idmap_im_lock; /* Protects the hashtable */
-	struct idmap_hashtable idmap_user_hash;
-	struct idmap_hashtable idmap_group_hash;
+	struct dentry		*idmap_dentry;
+	wait_queue_head_t	idmap_wq;
+	struct idmap_msg	idmap_im;
+	struct mutex		idmap_lock;	/* Serializes upcalls */
+	struct mutex		idmap_im_lock;	/* Protects the hashtable */
+	struct idmap_hashtable	idmap_user_hash;
+	struct idmap_hashtable	idmap_group_hash;
 };
 
-static ssize_t   idmap_pipe_upcall(struct file *, struct rpc_pipe_msg *,
-		     char __user *, size_t);
-static ssize_t   idmap_pipe_downcall(struct file *, const char __user *,
-		     size_t);
-static void      idmap_pipe_destroy_msg(struct rpc_pipe_msg *);
+static ssize_t idmap_pipe_upcall(struct file *, struct rpc_pipe_msg *,
+				 char __user *, size_t);
+static ssize_t idmap_pipe_downcall(struct file *, const char __user *,
+				   size_t);
+static void idmap_pipe_destroy_msg(struct rpc_pipe_msg *);
 
 static unsigned int fnvhash32(const void *, size_t);
 
 static struct rpc_pipe_ops idmap_upcall_ops = {
-        .upcall         = idmap_pipe_upcall,
-        .downcall       = idmap_pipe_downcall,
-        .destroy_msg    = idmap_pipe_destroy_msg,
+	.upcall		= idmap_pipe_upcall,
+	.downcall	= idmap_pipe_downcall,
+	.destroy_msg	= idmap_pipe_destroy_msg,
 };
 
 int
@@ -115,19 +115,20 @@ nfs_idmap_new(struct nfs_client *clp)
 
 	BUG_ON(clp->cl_idmap != NULL);
 
-        if ((idmap = kzalloc(sizeof(*idmap), GFP_KERNEL)) == NULL)
-                return -ENOMEM;
+	idmap = kzalloc(sizeof(*idmap), GFP_KERNEL);
+	if (idmap == NULL)
+		return -ENOMEM;
 
-        idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_dentry, "idmap",
-	    idmap, &idmap_upcall_ops, 0);
-        if (IS_ERR(idmap->idmap_dentry)) {
+	idmap->idmap_dentry = rpc_mkpipe(clp->cl_rpcclient->cl_dentry, "idmap",
+					 idmap, &idmap_upcall_ops, 0);
+	if (IS_ERR(idmap->idmap_dentry)) {
 		error = PTR_ERR(idmap->idmap_dentry);
 		kfree(idmap);
 		return error;
 	}
 
-        mutex_init(&idmap->idmap_lock);
-        mutex_init(&idmap->idmap_im_lock);
+	mutex_init(&idmap->idmap_lock);
+	mutex_init(&idmap->idmap_im_lock);
 	init_waitqueue_head(&idmap->idmap_wq);
 	idmap->idmap_user_hash.h_type = IDMAP_TYPE_USER;
 	idmap->idmap_group_hash.h_type = IDMAP_TYPE_GROUP;
@@ -192,7 +193,7 @@ idmap_lookup_id(struct idmap_hashtable *h, __u32 id)
  * pretty trivial.
  */
 static inline struct idmap_hashent *
-idmap_alloc_name(struct idmap_hashtable *h, char *name, unsigned len)
+idmap_alloc_name(struct idmap_hashtable *h, char *name, size_t len)
 {
 	return idmap_name_hash(h, name, len);
 }
@@ -285,7 +286,7 @@ nfs_idmap_id(struct idmap *idmap, struct idmap_hashtable *h,
 	memset(im, 0, sizeof(*im));
 	mutex_unlock(&idmap->idmap_im_lock);
 	mutex_unlock(&idmap->idmap_lock);
-	return (ret);
+	return ret;
 }
 
 /*
@@ -354,42 +355,40 @@ nfs_idmap_name(struct idmap *idmap, struct idmap_hashtable *h,
 /* RPC pipefs upcall/downcall routines */
 static ssize_t
 idmap_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
-    char __user *dst, size_t buflen)
+		  char __user *dst, size_t buflen)
 {
-        char *data = (char *)msg->data + msg->copied;
-        ssize_t mlen = msg->len - msg->copied;
-        ssize_t left;
-
-        if (mlen > buflen)
-                mlen = buflen;
-
-        left = copy_to_user(dst, data, mlen);
-	if (left < 0) {
-		msg->errno = left;
-		return left;
+	char *data = (char *)msg->data + msg->copied;
+	size_t mlen = min(msg->len, buflen);
+	unsigned long left;
+
+	left = copy_to_user(dst, data, mlen);
+	if (left == mlen) {
+		msg->errno = -EFAULT;
+		return -EFAULT;
 	}
+
 	mlen -= left;
 	msg->copied += mlen;
 	msg->errno = 0;
-        return mlen;
+	return mlen;
 }
 
 static ssize_t
 idmap_pipe_downcall(struct file *filp, const char __user *src, size_t mlen)
 {
-        struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
+	struct rpc_inode *rpci = RPC_I(filp->f_path.dentry->d_inode);
 	struct idmap *idmap = (struct idmap *)rpci->private;
 	struct idmap_msg im_in, *im = &idmap->idmap_im;
 	struct idmap_hashtable *h;
 	struct idmap_hashent *he = NULL;
-	int namelen_in;
+	size_t namelen_in;
 	int ret;
 
-        if (mlen != sizeof(im_in))
-                return (-ENOSPC);
+	if (mlen != sizeof(im_in))
+		return -ENOSPC;
 
-        if (copy_from_user(&im_in, src, mlen) != 0)
-		return (-EFAULT);
+	if (copy_from_user(&im_in, src, mlen) != 0)
+		return -EFAULT;
 
 	mutex_lock(&idmap->idmap_im_lock);
 
@@ -487,7 +486,7 @@ static unsigned int fnvhash32(const void *buf, size_t buflen)
 		hash ^= (unsigned int)*p;
 	}
 
-	return (hash);
+	return hash;
 }
 
 int nfs_map_name_to_uid(struct nfs_client *clp, const char *name, size_t namelen, __u32 *uid)

fs/nfs/inode.c

@@ -192,7 +192,7 @@ void nfs_invalidate_atime(struct inode *inode)
  */
 static void nfs_invalidate_inode(struct inode *inode)
 {
-	set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
+	set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
 	nfs_zap_caches_locked(inode);
 }
 
@@ -229,7 +229,7 @@ nfs_init_locked(struct inode *inode, void *opaque)
 	struct nfs_find_desc	*desc = (struct nfs_find_desc *)opaque;
 	struct nfs_fattr	*fattr = desc->fattr;
 
-	NFS_FILEID(inode) = fattr->fileid;
+	set_nfs_fileid(inode, fattr->fileid);
 	nfs_copy_fh(NFS_FH(inode), desc->fh);
 	return 0;
 }
@@ -291,7 +291,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
 			inode->i_fop = &nfs_dir_operations;
 			if (nfs_server_capable(inode, NFS_CAP_READDIRPLUS)
 			    && fattr->size <= NFS_LIMIT_READDIRPLUS)
-				set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
+				set_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
 			/* Deal with crossing mountpoints */
 			if (!nfs_fsid_equal(&NFS_SB(sb)->fsid, &fattr->fsid)) {
 				if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL)
@@ -461,9 +461,18 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 	int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
 	int err;
 
-	/* Flush out writes to the server in order to update c/mtime */
-	if (S_ISREG(inode->i_mode))
+	/*
+	 * Flush out writes to the server in order to update c/mtime.
+	 *
+	 * Hold the i_mutex to suspend application writes temporarily;
+	 * this prevents long-running writing applications from blocking
+	 * nfs_wb_nocommit.
+	 */
+	if (S_ISREG(inode->i_mode)) {
+		mutex_lock(&inode->i_mutex);
 		nfs_wb_nocommit(inode);
+		mutex_unlock(&inode->i_mutex);
+	}
 
 	/*
 	 * We may force a getattr if the user cares about atime.
@@ -659,7 +668,7 @@ __nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
 		if (status == -ESTALE) {
 			nfs_zap_caches(inode);
 			if (!S_ISDIR(inode->i_mode))
-				set_bit(NFS_INO_STALE, &NFS_FLAGS(inode));
+				set_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
 		}
 		goto out;
 	}
@@ -814,8 +823,9 @@ static void nfs_wcc_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 			if (S_ISDIR(inode->i_mode))
 				nfsi->cache_validity |= NFS_INO_INVALID_DATA;
 		}
-		if (inode->i_size == fattr->pre_size && nfsi->npages == 0)
-			inode->i_size = fattr->size;
+		if (inode->i_size == nfs_size_to_loff_t(fattr->pre_size) &&
+		    nfsi->npages == 0)
+			inode->i_size = nfs_size_to_loff_t(fattr->size);
 	}
 }
 
@@ -1019,7 +1029,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 			dprintk("NFS: mtime change on server for file %s/%ld\n",
 					inode->i_sb->s_id, inode->i_ino);
 			invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA;
-			nfsi->cache_change_attribute = now;
+			if (S_ISDIR(inode->i_mode))
+				nfs_force_lookup_revalidate(inode);
 		}
 		/* If ctime has changed we should definitely clear access+acl caches */
 		if (!timespec_equal(&inode->i_ctime, &fattr->ctime))
@@ -1028,7 +1039,8 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 		dprintk("NFS: change_attr change on server for file %s/%ld\n",
 				inode->i_sb->s_id, inode->i_ino);
 		invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
-		nfsi->cache_change_attribute = now;
+		if (S_ISDIR(inode->i_mode))
+			nfs_force_lookup_revalidate(inode);
 	}
 
 	/* Check if our cached file size is stale */
@@ -1133,7 +1145,7 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
 void nfs4_clear_inode(struct inode *inode)
 {
 	/* If we are holding a delegation, return it! */
-	nfs_inode_return_delegation(inode);
+	nfs_inode_return_delegation_noreclaim(inode);
 	/* First call standard NFS clear_inode() code */
 	nfs_clear_inode(inode);
 }

fs/nfs/internal.h

@@ -21,7 +21,8 @@ struct nfs_clone_mount {
 	struct nfs_fattr *fattr;
 	char *hostname;
 	char *mnt_path;
-	struct sockaddr_in *addr;
+	struct sockaddr *addr;
+	size_t addrlen;
 	rpc_authflavor_t authflavor;
 };
 
@@ -41,19 +42,19 @@ struct nfs_parsed_mount_data {
 	char			*client_address;
 
 	struct {
-		struct sockaddr_in	address;
+		struct sockaddr_storage	address;
+		size_t			addrlen;
 		char			*hostname;
-		unsigned int		program;
 		unsigned int		version;
 		unsigned short		port;
 		int			protocol;
 	} mount_server;
 
 	struct {
-		struct sockaddr_in	address;
+		struct sockaddr_storage	address;
+		size_t			addrlen;
 		char			*hostname;
 		char			*export_path;
-		unsigned int		program;
 		int			protocol;
 	} nfs_server;
 };
@@ -62,7 +63,8 @@ struct nfs_parsed_mount_data {
 extern struct rpc_program nfs_program;
 
 extern void nfs_put_client(struct nfs_client *);
-extern struct nfs_client *nfs_find_client(const struct sockaddr_in *, int);
+extern struct nfs_client *nfs_find_client(const struct sockaddr *, u32);
+extern struct nfs_client *nfs_find_client_next(struct nfs_client *);
 extern struct nfs_server *nfs_create_server(
 					const struct nfs_parsed_mount_data *,
 					struct nfs_fh *);
@@ -160,6 +162,8 @@ extern struct rpc_stat nfs_rpcstat;
 
 extern int __init register_nfs_fs(void);
 extern void __exit unregister_nfs_fs(void);
+extern void nfs_sb_active(struct nfs_server *server);
+extern void nfs_sb_deactive(struct nfs_server *server);
 
 /* namespace.c */
 extern char *nfs_path(const char *base,

fs/nfs/namespace.c

@@ -188,7 +188,7 @@ static struct vfsmount *nfs_do_clone_mount(struct nfs_server *server,
 {
 #ifdef CONFIG_NFS_V4
 	struct vfsmount *mnt = NULL;
-	switch (server->nfs_client->cl_nfsversion) {
+	switch (server->nfs_client->rpc_ops->version) {
 		case 2:
 		case 3:
 			mnt = vfs_kern_mount(&nfs_xdev_fs_type, 0, devname, mountdata);

fs/nfs/nfs2xdr.c

@@ -262,7 +262,9 @@ static int
 nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
 {
 	struct kvec *iov = req->rq_rcv_buf.head;
-	int	status, count, recvd, hdrlen;
+	size_t hdrlen;
+	u32 count, recvd;
+	int status;
 
 	if ((status = ntohl(*p++)))
 		return -nfs_stat_to_errno(status);
@@ -273,7 +275,7 @@ nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
 	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
 	if (iov->iov_len < hdrlen) {
 		dprintk("NFS: READ reply header overflowed:"
-				"length %d > %Zu\n", hdrlen, iov->iov_len);
+				"length %Zu > %Zu\n", hdrlen, iov->iov_len);
 		return -errno_NFSERR_IO;
 	} else if (iov->iov_len != hdrlen) {
 		dprintk("NFS: READ header is short. iovec will be shifted.\n");
@@ -283,11 +285,11 @@ nfs_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
 	recvd = req->rq_rcv_buf.len - hdrlen;
 	if (count > recvd) {
 		dprintk("NFS: server cheating in read reply: "
-			"count %d > recvd %d\n", count, recvd);
+			"count %u > recvd %u\n", count, recvd);
 		count = recvd;
 	}
 
-	dprintk("RPC:      readres OK count %d\n", count);
+	dprintk("RPC:      readres OK count %u\n", count);
 	if (count < res->count)
 		res->count = count;
 
@@ -423,9 +425,10 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
 	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
 	struct kvec *iov = rcvbuf->head;
 	struct page **page;
-	int hdrlen, recvd;
+	size_t hdrlen;
+	unsigned int pglen, recvd;
+	u32 len;
 	int status, nr;
-	unsigned int len, pglen;
 	__be32 *end, *entry, *kaddr;
 
 	if ((status = ntohl(*p++)))
@@ -434,7 +437,7 @@ nfs_xdr_readdirres(struct rpc_rqst *req, __be32 *p, void *dummy)
 	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
 	if (iov->iov_len < hdrlen) {
 		dprintk("NFS: READDIR reply header overflowed:"
-				"length %d > %Zu\n", hdrlen, iov->iov_len);
+				"length %Zu > %Zu\n", hdrlen, iov->iov_len);
 		return -errno_NFSERR_IO;
 	} else if (iov->iov_len != hdrlen) {
 		dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
@@ -576,7 +579,8 @@ nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
 {
 	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
 	struct kvec *iov = rcvbuf->head;
-	int hdrlen, len, recvd;
+	size_t hdrlen;
+	u32 len, recvd;
 	char	*kaddr;
 	int	status;
 
@@ -584,14 +588,14 @@ nfs_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, void *dummy)
 		return -nfs_stat_to_errno(status);
 	/* Convert length of symlink */
 	len = ntohl(*p++);
-	if (len >= rcvbuf->page_len || len <= 0) {
+	if (len >= rcvbuf->page_len) {
 		dprintk("nfs: server returned giant symlink!\n");
 		return -ENAMETOOLONG;
 	}
 	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
 	if (iov->iov_len < hdrlen) {
 		dprintk("NFS: READLINK reply header overflowed:"
-				"length %d > %Zu\n", hdrlen, iov->iov_len);
+				"length %Zu > %Zu\n", hdrlen, iov->iov_len);
 		return -errno_NFSERR_IO;
 	} else if (iov->iov_len != hdrlen) {
 		dprintk("NFS: READLINK header is short. iovec will be shifted.\n");

fs/nfs/nfs3proc.c

@@ -732,16 +732,9 @@ static int nfs3_read_done(struct rpc_task *task, struct nfs_read_data *data)
 	return 0;
 }
 
-static void nfs3_proc_read_setup(struct nfs_read_data *data)
+static void nfs3_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
 {
-	struct rpc_message	msg = {
-		.rpc_proc	= &nfs3_procedures[NFS3PROC_READ],
-		.rpc_argp	= &data->args,
-		.rpc_resp	= &data->res,
-		.rpc_cred	= data->cred,
-	};
-
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
 }
 
 static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
@@ -753,24 +746,9 @@ static int nfs3_write_done(struct rpc_task *task, struct nfs_write_data *data)
 	return 0;
 }
 
-static void nfs3_proc_write_setup(struct nfs_write_data *data, int how)
+static void nfs3_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
 {
-	struct rpc_message	msg = {
-		.rpc_proc	= &nfs3_procedures[NFS3PROC_WRITE],
-		.rpc_argp	= &data->args,
-		.rpc_resp	= &data->res,
-		.rpc_cred	= data->cred,
-	};
-
-	data->args.stable = NFS_UNSTABLE;
-	if (how & FLUSH_STABLE) {
-		data->args.stable = NFS_FILE_SYNC;
-		if (NFS_I(data->inode)->ncommit)
-			data->args.stable = NFS_DATA_SYNC;
-	}
-
-	/* Finalize the task. */
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
 }
 
 static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
@@ -781,22 +759,17 @@ static int nfs3_commit_done(struct rpc_task *task, struct nfs_write_data *data)
 	return 0;
 }
 
-static void nfs3_proc_commit_setup(struct nfs_write_data *data, int how)
+static void nfs3_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
 {
-	struct rpc_message	msg = {
-		.rpc_proc	= &nfs3_procedures[NFS3PROC_COMMIT],
-		.rpc_argp	= &data->args,
-		.rpc_resp	= &data->res,
-		.rpc_cred	= data->cred,
-	};
-
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
 }
 
 static int
 nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
 {
-	return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
+	struct inode *inode = filp->f_path.dentry->d_inode;
+
+	return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
 }
 
 const struct nfs_rpc_ops nfs_v3_clientops = {

fs/nfs/nfs3xdr.c

@@ -506,9 +506,9 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
 	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
 	struct kvec *iov = rcvbuf->head;
 	struct page **page;
-	int hdrlen, recvd;
+	size_t hdrlen;
+	u32 len, recvd, pglen;
 	int status, nr;
-	unsigned int len, pglen;
 	__be32 *entry, *end, *kaddr;
 
 	status = ntohl(*p++);
@@ -527,7 +527,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
 	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
 	if (iov->iov_len < hdrlen) {
 		dprintk("NFS: READDIR reply header overflowed:"
-				"length %d > %Zu\n", hdrlen, iov->iov_len);
+				"length %Zu > %Zu\n", hdrlen, iov->iov_len);
 		return -errno_NFSERR_IO;
 	} else if (iov->iov_len != hdrlen) {
 		dprintk("NFS: READDIR header is short. iovec will be shifted.\n");
@@ -549,7 +549,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
 		len = ntohl(*p++);		/* string length */
 		p += XDR_QUADLEN(len) + 2;	/* name + cookie */
 		if (len > NFS3_MAXNAMLEN) {
-			dprintk("NFS: giant filename in readdir (len %x)!\n",
+			dprintk("NFS: giant filename in readdir (len 0x%x)!\n",
 						len);
 			goto err_unmap;
 		}
@@ -570,7 +570,7 @@ nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res
 				len = ntohl(*p++);
 				if (len > NFS3_FHSIZE) {
 					dprintk("NFS: giant filehandle in "
-						"readdir (len %x)!\n", len);
+						"readdir (len 0x%x)!\n", len);
 					goto err_unmap;
 				}
 				p += XDR_QUADLEN(len);
@@ -815,7 +815,8 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
 {
 	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
 	struct kvec *iov = rcvbuf->head;
-	int hdrlen, len, recvd;
+	size_t hdrlen;
+	u32 len, recvd;
 	char	*kaddr;
 	int	status;
 
@@ -827,7 +828,7 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
 
 	/* Convert length of symlink */
 	len = ntohl(*p++);
-	if (len >= rcvbuf->page_len || len <= 0) {
+	if (len >= rcvbuf->page_len) {
 		dprintk("nfs: server returned giant symlink!\n");
 		return -ENAMETOOLONG;
 	}
@@ -835,7 +836,7 @@ nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr)
 	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
 	if (iov->iov_len < hdrlen) {
 		dprintk("NFS: READLINK reply header overflowed:"
-				"length %d > %Zu\n", hdrlen, iov->iov_len);
+				"length %Zu > %Zu\n", hdrlen, iov->iov_len);
 		return -errno_NFSERR_IO;
 	} else if (iov->iov_len != hdrlen) {
 		dprintk("NFS: READLINK header is short. "
@@ -863,7 +864,9 @@ static int
 nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
 {
 	struct kvec *iov = req->rq_rcv_buf.head;
-	int	status, count, ocount, recvd, hdrlen;
+	size_t hdrlen;
+	u32 count, ocount, recvd;
+	int status;
 
 	status = ntohl(*p++);
 	p = xdr_decode_post_op_attr(p, res->fattr);
@@ -871,7 +874,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
 	if (status != 0)
 		return -nfs_stat_to_errno(status);
 
-	/* Decode reply could and EOF flag. NFSv3 is somewhat redundant
+	/* Decode reply count and EOF flag. NFSv3 is somewhat redundant
 	 * in that it puts the count both in the res struct and in the
 	 * opaque data count. */
 	count    = ntohl(*p++);
@@ -886,7 +889,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
 	hdrlen = (u8 *) p - (u8 *) iov->iov_base;
 	if (iov->iov_len < hdrlen) {
 		dprintk("NFS: READ reply header overflowed:"
-				"length %d > %Zu\n", hdrlen, iov->iov_len);
+				"length %Zu > %Zu\n", hdrlen, iov->iov_len);
        		return -errno_NFSERR_IO;
 	} else if (iov->iov_len != hdrlen) {
 		dprintk("NFS: READ header is short. iovec will be shifted.\n");
@@ -896,7 +899,7 @@ nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res)
 	recvd = req->rq_rcv_buf.len - hdrlen;
 	if (count > recvd) {
 		dprintk("NFS: server cheating in read reply: "
-			"count %d > recvd %d\n", count, recvd);
+			"count %u > recvd %u\n", count, recvd);
 		count = recvd;
 		res->eof = 0;
 	}

fs/nfs/nfs4namespace.c

@@ -114,10 +114,7 @@ static inline int valid_ipaddr4(const char *buf)
  * nfs_follow_referral - set up mountpoint when hitting a referral on moved error
  * @mnt_parent - mountpoint of parent directory
  * @dentry - parent directory
- * @fspath - fs path returned in fs_locations
- * @mntpath - mount path to new server
- * @hostname - hostname of new server
- * @addr - host addr of new server
+ * @locations - array of NFSv4 server location information
  *
  */
 static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
@@ -131,7 +128,8 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
 		.authflavor = NFS_SB(mnt_parent->mnt_sb)->client->cl_auth->au_flavor,
 	};
 	char *page = NULL, *page2 = NULL;
-	int loc, s, error;
+	unsigned int s;
+	int loc, error;
 
 	if (locations == NULL || locations->nlocations <= 0)
 		goto out;
@@ -174,7 +172,10 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
 
 		s = 0;
 		while (s < location->nservers) {
-			struct sockaddr_in addr = {};
+			struct sockaddr_in addr = {
+				.sin_family	= AF_INET,
+				.sin_port	= htons(NFS_PORT),
+			};
 
 			if (location->servers[s].len <= 0 ||
 			    valid_ipaddr4(location->servers[s].data) < 0) {
@@ -183,10 +184,9 @@ static struct vfsmount *nfs_follow_referral(const struct vfsmount *mnt_parent,
 			}
 
 			mountdata.hostname = location->servers[s].data;
-			addr.sin_addr.s_addr = in_aton(mountdata.hostname);
-			addr.sin_family = AF_INET;
-			addr.sin_port = htons(NFS_PORT);
-			mountdata.addr = &addr;
+			addr.sin_addr.s_addr = in_aton(mountdata.hostname),
+			mountdata.addr = (struct sockaddr *)&addr;
+			mountdata.addrlen = sizeof(addr);
 
 			snprintf(page, PAGE_SIZE, "%s:%s",
 					mountdata.hostname,

fs/nfs/nfs4proc.c

@@ -210,7 +210,7 @@ static void update_changeattr(struct inode *dir, struct nfs4_change_info *cinfo)
 	spin_lock(&dir->i_lock);
 	nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
 	if (!cinfo->atomic || cinfo->before != nfsi->change_attr)
-		nfsi->cache_change_attribute = jiffies;
+		nfs_force_lookup_revalidate(dir);
 	nfsi->change_attr = cinfo->after;
 	spin_unlock(&dir->i_lock);
 }
@@ -718,19 +718,6 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
 	return err;
 }
 
-static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
-{
-	struct nfs4_opendata *data = calldata;
-	struct  rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
-		.rpc_argp = &data->c_arg,
-		.rpc_resp = &data->c_res,
-		.rpc_cred = data->owner->so_cred,
-	};
-	data->timestamp = jiffies;
-	rpc_call_setup(task, &msg, 0);
-}
-
 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs4_opendata *data = calldata;
@@ -767,7 +754,6 @@ out_free:
 }
 
 static const struct rpc_call_ops nfs4_open_confirm_ops = {
-	.rpc_call_prepare = nfs4_open_confirm_prepare,
 	.rpc_call_done = nfs4_open_confirm_done,
 	.rpc_release = nfs4_open_confirm_release,
 };
@@ -779,12 +765,26 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
 {
 	struct nfs_server *server = NFS_SERVER(data->dir->d_inode);
 	struct rpc_task *task;
+	struct  rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_CONFIRM],
+		.rpc_argp = &data->c_arg,
+		.rpc_resp = &data->c_res,
+		.rpc_cred = data->owner->so_cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = server->client,
+		.rpc_message = &msg,
+		.callback_ops = &nfs4_open_confirm_ops,
+		.callback_data = data,
+		.flags = RPC_TASK_ASYNC,
+	};
 	int status;
 
 	kref_get(&data->kref);
 	data->rpc_done = 0;
 	data->rpc_status = 0;
-	task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_confirm_ops, data);
+	data->timestamp = jiffies;
+	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
 	status = nfs4_wait_for_completion_rpc_task(task);
@@ -801,13 +801,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
 {
 	struct nfs4_opendata *data = calldata;
 	struct nfs4_state_owner *sp = data->owner;
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
-		.rpc_argp = &data->o_arg,
-		.rpc_resp = &data->o_res,
-		.rpc_cred = sp->so_cred,
-	};
-	
+
 	if (nfs_wait_on_sequence(data->o_arg.seqid, task) != 0)
 		return;
 	/*
@@ -832,11 +826,11 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata)
 	data->o_arg.id = sp->so_owner_id.id;
 	data->o_arg.clientid = sp->so_client->cl_clientid;
 	if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) {
-		msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
+		task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR];
 		nfs_copy_fh(&data->o_res.fh, data->o_arg.fh);
 	}
 	data->timestamp = jiffies;
-	rpc_call_setup(task, &msg, 0);
+	rpc_call_start(task);
 	return;
 out_no_action:
 	task->tk_action = NULL;
@@ -908,13 +902,26 @@ static int _nfs4_proc_open(struct nfs4_opendata *data)
 	struct nfs_openargs *o_arg = &data->o_arg;
 	struct nfs_openres *o_res = &data->o_res;
 	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN],
+		.rpc_argp = o_arg,
+		.rpc_resp = o_res,
+		.rpc_cred = data->owner->so_cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = server->client,
+		.rpc_message = &msg,
+		.callback_ops = &nfs4_open_ops,
+		.callback_data = data,
+		.flags = RPC_TASK_ASYNC,
+	};
 	int status;
 
 	kref_get(&data->kref);
 	data->rpc_done = 0;
 	data->rpc_status = 0;
 	data->cancelled = 0;
-	task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_open_ops, data);
+	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
 	status = nfs4_wait_for_completion_rpc_task(task);
@@ -1244,12 +1251,6 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
 {
 	struct nfs4_closedata *calldata = data;
 	struct nfs4_state *state = calldata->state;
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
-		.rpc_argp = &calldata->arg,
-		.rpc_resp = &calldata->res,
-		.rpc_cred = state->owner->so_cred,
-	};
 	int clear_rd, clear_wr, clear_rdwr;
 
 	if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
@@ -1276,14 +1277,14 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
 	}
 	nfs_fattr_init(calldata->res.fattr);
 	if (test_bit(NFS_O_RDONLY_STATE, &state->flags) != 0) {
-		msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
+		task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
 		calldata->arg.open_flags = FMODE_READ;
 	} else if (test_bit(NFS_O_WRONLY_STATE, &state->flags) != 0) {
-		msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
+		task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE];
 		calldata->arg.open_flags = FMODE_WRITE;
 	}
 	calldata->timestamp = jiffies;
-	rpc_call_setup(task, &msg, 0);
+	rpc_call_start(task);
 }
 
 static const struct rpc_call_ops nfs4_close_ops = {
@@ -1309,6 +1310,16 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
 	struct nfs4_closedata *calldata;
 	struct nfs4_state_owner *sp = state->owner;
 	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE],
+		.rpc_cred = state->owner->so_cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = server->client,
+		.rpc_message = &msg,
+		.callback_ops = &nfs4_close_ops,
+		.flags = RPC_TASK_ASYNC,
+	};
 	int status = -ENOMEM;
 
 	calldata = kmalloc(sizeof(*calldata), GFP_KERNEL);
@@ -1328,7 +1339,10 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
 	calldata->path.mnt = mntget(path->mnt);
 	calldata->path.dentry = dget(path->dentry);
 
-	task = rpc_run_task(server->client, RPC_TASK_ASYNC, &nfs4_close_ops, calldata);
+	msg.rpc_argp = &calldata->arg,
+	msg.rpc_resp = &calldata->res,
+	task_setup_data.callback_data = calldata;
+	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
 	status = 0;
@@ -2414,18 +2428,10 @@ static int nfs4_read_done(struct rpc_task *task, struct nfs_read_data *data)
 	return 0;
 }
 
-static void nfs4_proc_read_setup(struct nfs_read_data *data)
+static void nfs4_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
 {
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ],
-		.rpc_argp = &data->args,
-		.rpc_resp = &data->res,
-		.rpc_cred = data->cred,
-	};
-
 	data->timestamp   = jiffies;
-
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_READ];
 }
 
 static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
@@ -2443,33 +2449,15 @@ static int nfs4_write_done(struct rpc_task *task, struct nfs_write_data *data)
 	return 0;
 }
 
-static void nfs4_proc_write_setup(struct nfs_write_data *data, int how)
+static void nfs4_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
 {
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE],
-		.rpc_argp = &data->args,
-		.rpc_resp = &data->res,
-		.rpc_cred = data->cred,
-	};
-	struct inode *inode = data->inode;
-	struct nfs_server *server = NFS_SERVER(inode);
-	int stable;
-	
-	if (how & FLUSH_STABLE) {
-		if (!NFS_I(inode)->ncommit)
-			stable = NFS_FILE_SYNC;
-		else
-			stable = NFS_DATA_SYNC;
-	} else
-		stable = NFS_UNSTABLE;
-	data->args.stable = stable;
+	struct nfs_server *server = NFS_SERVER(data->inode);
+
 	data->args.bitmask = server->attr_bitmask;
 	data->res.server = server;
-
 	data->timestamp   = jiffies;
 
-	/* Finalize the task. */
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_WRITE];
 }
 
 static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
@@ -2484,20 +2472,13 @@ static int nfs4_commit_done(struct rpc_task *task, struct nfs_write_data *data)
 	return 0;
 }
 
-static void nfs4_proc_commit_setup(struct nfs_write_data *data, int how)
+static void nfs4_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
 {
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT],
-		.rpc_argp = &data->args,
-		.rpc_resp = &data->res,
-		.rpc_cred = data->cred,
-	};	
 	struct nfs_server *server = NFS_SERVER(data->inode);
 	
 	data->args.bitmask = server->attr_bitmask;
 	data->res.server = server;
-
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_COMMIT];
 }
 
 /*
@@ -2910,14 +2891,20 @@ int nfs4_proc_setclientid(struct nfs_client *clp, u32 program, unsigned short po
 
 	for(;;) {
 		setclientid.sc_name_len = scnprintf(setclientid.sc_name,
-				sizeof(setclientid.sc_name), "%s/%u.%u.%u.%u %s %u",
-				clp->cl_ipaddr, NIPQUAD(clp->cl_addr.sin_addr),
+				sizeof(setclientid.sc_name), "%s/%s %s %s %u",
+				clp->cl_ipaddr,
+				rpc_peeraddr2str(clp->cl_rpcclient,
+							RPC_DISPLAY_ADDR),
+				rpc_peeraddr2str(clp->cl_rpcclient,
+							RPC_DISPLAY_PROTO),
 				cred->cr_ops->cr_name,
 				clp->cl_id_uniquifier);
 		setclientid.sc_netid_len = scnprintf(setclientid.sc_netid,
-				sizeof(setclientid.sc_netid), "tcp");
+				sizeof(setclientid.sc_netid),
+				rpc_peeraddr2str(clp->cl_rpcclient,
+							RPC_DISPLAY_NETID));
 		setclientid.sc_uaddr_len = scnprintf(setclientid.sc_uaddr,
-				sizeof(setclientid.sc_uaddr), "%s.%d.%d",
+				sizeof(setclientid.sc_uaddr), "%s.%u.%u",
 				clp->cl_ipaddr, port >> 8, port & 255);
 
 		status = rpc_call_sync(clp->cl_rpcclient, &msg, 0);
@@ -2981,25 +2968,11 @@ struct nfs4_delegreturndata {
 	struct nfs4_delegreturnres res;
 	struct nfs_fh fh;
 	nfs4_stateid stateid;
-	struct rpc_cred *cred;
 	unsigned long timestamp;
 	struct nfs_fattr fattr;
 	int rpc_status;
 };
 
-static void nfs4_delegreturn_prepare(struct rpc_task *task, void *calldata)
-{
-	struct nfs4_delegreturndata *data = calldata;
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
-		.rpc_argp = &data->args,
-		.rpc_resp = &data->res,
-		.rpc_cred = data->cred,
-	};
-	nfs_fattr_init(data->res.fattr);
-	rpc_call_setup(task, &msg, 0);
-}
-
 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
 {
 	struct nfs4_delegreturndata *data = calldata;
@@ -3010,24 +2983,30 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
 
 static void nfs4_delegreturn_release(void *calldata)
 {
-	struct nfs4_delegreturndata *data = calldata;
-
-	put_rpccred(data->cred);
 	kfree(calldata);
 }
 
 static const struct rpc_call_ops nfs4_delegreturn_ops = {
-	.rpc_call_prepare = nfs4_delegreturn_prepare,
 	.rpc_call_done = nfs4_delegreturn_done,
 	.rpc_release = nfs4_delegreturn_release,
 };
 
-static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid)
+static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
 {
 	struct nfs4_delegreturndata *data;
 	struct nfs_server *server = NFS_SERVER(inode);
 	struct rpc_task *task;
-	int status;
+	struct rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_DELEGRETURN],
+		.rpc_cred = cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = server->client,
+		.rpc_message = &msg,
+		.callback_ops = &nfs4_delegreturn_ops,
+		.flags = RPC_TASK_ASYNC,
+	};
+	int status = 0;
 
 	data = kmalloc(sizeof(*data), GFP_KERNEL);
 	if (data == NULL)
@@ -3039,30 +3018,37 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
 	memcpy(&data->stateid, stateid, sizeof(data->stateid));
 	data->res.fattr = &data->fattr;
 	data->res.server = server;
-	data->cred = get_rpccred(cred);
+	nfs_fattr_init(data->res.fattr);
 	data->timestamp = jiffies;
 	data->rpc_status = 0;
 
-	task = rpc_run_task(NFS_CLIENT(inode), RPC_TASK_ASYNC, &nfs4_delegreturn_ops, data);
+	task_setup_data.callback_data = data;
+	msg.rpc_argp = &data->args,
+	msg.rpc_resp = &data->res,
+	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
+	if (!issync)
+		goto out;
 	status = nfs4_wait_for_completion_rpc_task(task);
-	if (status == 0) {
-		status = data->rpc_status;
-		if (status == 0)
-			nfs_refresh_inode(inode, &data->fattr);
-	}
+	if (status != 0)
+		goto out;
+	status = data->rpc_status;
+	if (status != 0)
+		goto out;
+	nfs_refresh_inode(inode, &data->fattr);
+out:
 	rpc_put_task(task);
 	return status;
 }
 
-int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid)
+int nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, const nfs4_stateid *stateid, int issync)
 {
 	struct nfs_server *server = NFS_SERVER(inode);
 	struct nfs4_exception exception = { };
 	int err;
 	do {
-		err = _nfs4_proc_delegreturn(inode, cred, stateid);
+		err = _nfs4_proc_delegreturn(inode, cred, stateid, issync);
 		switch (err) {
 			case -NFS4ERR_STALE_STATEID:
 			case -NFS4ERR_EXPIRED:
@@ -3230,12 +3216,6 @@ static void nfs4_locku_done(struct rpc_task *task, void *data)
 static void nfs4_locku_prepare(struct rpc_task *task, void *data)
 {
 	struct nfs4_unlockdata *calldata = data;
-	struct rpc_message msg = {
-		.rpc_proc	= &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
-		.rpc_argp       = &calldata->arg,
-		.rpc_resp       = &calldata->res,
-		.rpc_cred	= calldata->lsp->ls_state->owner->so_cred,
-	};
 
 	if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
 		return;
@@ -3245,7 +3225,7 @@ static void nfs4_locku_prepare(struct rpc_task *task, void *data)
 		return;
 	}
 	calldata->timestamp = jiffies;
-	rpc_call_setup(task, &msg, 0);
+	rpc_call_start(task);
 }
 
 static const struct rpc_call_ops nfs4_locku_ops = {
@@ -3260,6 +3240,16 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
 		struct nfs_seqid *seqid)
 {
 	struct nfs4_unlockdata *data;
+	struct rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCKU],
+		.rpc_cred = ctx->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = NFS_CLIENT(lsp->ls_state->inode),
+		.rpc_message = &msg,
+		.callback_ops = &nfs4_locku_ops,
+		.flags = RPC_TASK_ASYNC,
+	};
 
 	/* Ensure this is an unlock - when canceling a lock, the
 	 * canceled lock is passed in, and it won't be an unlock.
@@ -3272,7 +3262,10 @@ static struct rpc_task *nfs4_do_unlck(struct file_lock *fl,
 		return ERR_PTR(-ENOMEM);
 	}
 
-	return rpc_run_task(NFS_CLIENT(lsp->ls_state->inode), RPC_TASK_ASYNC, &nfs4_locku_ops, data);
+	msg.rpc_argp = &data->arg,
+	msg.rpc_resp = &data->res,
+	task_setup_data.callback_data = data;
+	return rpc_run_task(&task_setup_data);
 }
 
 static int nfs4_proc_unlck(struct nfs4_state *state, int cmd, struct file_lock *request)
@@ -3331,15 +3324,12 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
 
 	p->arg.fh = NFS_FH(inode);
 	p->arg.fl = &p->fl;
-	if (!(lsp->ls_seqid.flags & NFS_SEQID_CONFIRMED)) {
-		p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid);
-		if (p->arg.open_seqid == NULL)
-			goto out_free;
-
-	}
+	p->arg.open_seqid = nfs_alloc_seqid(&lsp->ls_state->owner->so_seqid);
+	if (p->arg.open_seqid == NULL)
+		goto out_free;
 	p->arg.lock_seqid = nfs_alloc_seqid(&lsp->ls_seqid);
 	if (p->arg.lock_seqid == NULL)
-		goto out_free;
+		goto out_free_seqid;
 	p->arg.lock_stateid = &lsp->ls_stateid;
 	p->arg.lock_owner.clientid = server->nfs_client->cl_clientid;
 	p->arg.lock_owner.id = lsp->ls_id.id;
@@ -3348,9 +3338,9 @@ static struct nfs4_lockdata *nfs4_alloc_lockdata(struct file_lock *fl,
 	p->ctx = get_nfs_open_context(ctx);
 	memcpy(&p->fl, fl, sizeof(p->fl));
 	return p;
+out_free_seqid:
+	nfs_free_seqid(p->arg.open_seqid);
 out_free:
-	if (p->arg.open_seqid != NULL)
-		nfs_free_seqid(p->arg.open_seqid);
 	kfree(p);
 	return NULL;
 }
@@ -3359,31 +3349,20 @@ static void nfs4_lock_prepare(struct rpc_task *task, void *calldata)
 {
 	struct nfs4_lockdata *data = calldata;
 	struct nfs4_state *state = data->lsp->ls_state;
-	struct nfs4_state_owner *sp = state->owner;
-	struct rpc_message msg = {
-		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
-		.rpc_argp = &data->arg,
-		.rpc_resp = &data->res,
-		.rpc_cred = sp->so_cred,
-	};
 
 	dprintk("%s: begin!\n", __FUNCTION__);
+	if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
+		return;
 	/* Do we need to do an open_to_lock_owner? */
 	if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED)) {
 		if (nfs_wait_on_sequence(data->arg.open_seqid, task) != 0)
 			return;
 		data->arg.open_stateid = &state->stateid;
 		data->arg.new_lock_owner = 1;
-		/* Retest in case we raced... */
-		if (!(data->arg.lock_seqid->sequence->flags & NFS_SEQID_CONFIRMED))
-			goto do_rpc;
-	}
-	if (nfs_wait_on_sequence(data->arg.lock_seqid, task) != 0)
-		return;
-	data->arg.new_lock_owner = 0;
-do_rpc:	
+	} else
+		data->arg.new_lock_owner = 0;
 	data->timestamp = jiffies;
-	rpc_call_setup(task, &msg, 0);
+	rpc_call_start(task);
 	dprintk("%s: done!, ret = %d\n", __FUNCTION__, data->rpc_status);
 }
 
@@ -3419,6 +3398,7 @@ static void nfs4_lock_release(void *calldata)
 	struct nfs4_lockdata *data = calldata;
 
 	dprintk("%s: begin!\n", __FUNCTION__);
+	nfs_free_seqid(data->arg.open_seqid);
 	if (data->cancelled != 0) {
 		struct rpc_task *task;
 		task = nfs4_do_unlck(&data->fl, data->ctx, data->lsp,
@@ -3428,8 +3408,6 @@ static void nfs4_lock_release(void *calldata)
 		dprintk("%s: cancelling lock!\n", __FUNCTION__);
 	} else
 		nfs_free_seqid(data->arg.lock_seqid);
-	if (data->arg.open_seqid != NULL)
-		nfs_free_seqid(data->arg.open_seqid);
 	nfs4_put_lock_state(data->lsp);
 	put_nfs_open_context(data->ctx);
 	kfree(data);
@@ -3446,6 +3424,16 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
 {
 	struct nfs4_lockdata *data;
 	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LOCK],
+		.rpc_cred = state->owner->so_cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = NFS_CLIENT(state->inode),
+		.rpc_message = &msg,
+		.callback_ops = &nfs4_lock_ops,
+		.flags = RPC_TASK_ASYNC,
+	};
 	int ret;
 
 	dprintk("%s: begin!\n", __FUNCTION__);
@@ -3457,8 +3445,10 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
 		data->arg.block = 1;
 	if (reclaim != 0)
 		data->arg.reclaim = 1;
-	task = rpc_run_task(NFS_CLIENT(state->inode), RPC_TASK_ASYNC,
-			&nfs4_lock_ops, data);
+	msg.rpc_argp = &data->arg,
+	msg.rpc_resp = &data->res,
+	task_setup_data.callback_data = data;
+	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
 	ret = nfs4_wait_for_completion_rpc_task(task);
@@ -3631,10 +3621,6 @@ int nfs4_setxattr(struct dentry *dentry, const char *key, const void *buf,
 	if (strcmp(key, XATTR_NAME_NFSV4_ACL) != 0)
 		return -EOPNOTSUPP;
 
-	if (!S_ISREG(inode->i_mode) &&
-	    (!S_ISDIR(inode->i_mode) || inode->i_mode & S_ISVTX))
-		return -EPERM;
-
 	return nfs4_proc_set_acl(inode, buf, buflen);
 }
 

fs/nfs/nfs4state.c

@@ -644,27 +644,26 @@ void nfs4_copy_stateid(nfs4_stateid *dst, struct nfs4_state *state, fl_owner_t f
 
 struct nfs_seqid *nfs_alloc_seqid(struct nfs_seqid_counter *counter)
 {
-	struct rpc_sequence *sequence = counter->sequence;
 	struct nfs_seqid *new;
 
 	new = kmalloc(sizeof(*new), GFP_KERNEL);
 	if (new != NULL) {
 		new->sequence = counter;
-		spin_lock(&sequence->lock);
-		list_add_tail(&new->list, &sequence->list);
-		spin_unlock(&sequence->lock);
+		INIT_LIST_HEAD(&new->list);
 	}
 	return new;
 }
 
 void nfs_free_seqid(struct nfs_seqid *seqid)
 {
-	struct rpc_sequence *sequence = seqid->sequence->sequence;
+	if (!list_empty(&seqid->list)) {
+		struct rpc_sequence *sequence = seqid->sequence->sequence;
 
-	spin_lock(&sequence->lock);
-	list_del(&seqid->list);
-	spin_unlock(&sequence->lock);
-	rpc_wake_up(&sequence->wait);
+		spin_lock(&sequence->lock);
+		list_del(&seqid->list);
+		spin_unlock(&sequence->lock);
+		rpc_wake_up(&sequence->wait);
+	}
 	kfree(seqid);
 }
 
@@ -675,6 +674,7 @@ void nfs_free_seqid(struct nfs_seqid *seqid)
  */
 static void nfs_increment_seqid(int status, struct nfs_seqid *seqid)
 {
+	BUG_ON(list_first_entry(&seqid->sequence->sequence->list, struct nfs_seqid, list) != seqid);
 	switch (status) {
 		case 0:
 			break;
@@ -726,15 +726,15 @@ int nfs_wait_on_sequence(struct nfs_seqid *seqid, struct rpc_task *task)
 	struct rpc_sequence *sequence = seqid->sequence->sequence;
 	int status = 0;
 
-	if (sequence->list.next == &seqid->list)
-		goto out;
 	spin_lock(&sequence->lock);
-	if (sequence->list.next != &seqid->list) {
-		rpc_sleep_on(&sequence->wait, task, NULL, NULL);
-		status = -EAGAIN;
-	}
+	if (list_empty(&seqid->list))
+		list_add_tail(&seqid->list, &sequence->list);
+	if (list_first_entry(&sequence->list, struct nfs_seqid, list) == seqid)
+		goto unlock;
+	rpc_sleep_on(&sequence->wait, task, NULL, NULL);
+	status = -EAGAIN;
+unlock:
 	spin_unlock(&sequence->lock);
-out:
 	return status;
 }
 
@@ -758,8 +758,9 @@ static void nfs4_recover_state(struct nfs_client *clp)
 
 	__module_get(THIS_MODULE);
 	atomic_inc(&clp->cl_count);
-	task = kthread_run(reclaimer, clp, "%u.%u.%u.%u-reclaim",
-			NIPQUAD(clp->cl_addr.sin_addr));
+	task = kthread_run(reclaimer, clp, "%s-reclaim",
+				rpc_peeraddr2str(clp->cl_rpcclient,
+							RPC_DISPLAY_ADDR));
 	if (!IS_ERR(task))
 		return;
 	nfs4_clear_recover_bit(clp);
@@ -970,8 +971,8 @@ out:
 	module_put_and_exit(0);
 	return 0;
 out_error:
-	printk(KERN_WARNING "Error: state recovery failed on NFSv4 server %u.%u.%u.%u with error %d\n",
-				NIPQUAD(clp->cl_addr.sin_addr), -status);
+	printk(KERN_WARNING "Error: state recovery failed on NFSv4 server %s"
+			" with error %d\n", clp->cl_hostname, -status);
 	set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);
 	goto out;
 }

fs/nfs/nfs4xdr.c

@@ -116,10 +116,12 @@ static int nfs4_stat_to_errno(int);
 #define decode_renew_maxsz	(op_decode_hdr_maxsz)
 #define encode_setclientid_maxsz \
 				(op_encode_hdr_maxsz + \
-				4 /*server->ip_addr*/ + \
-				1 /*Netid*/ + \
-				6 /*uaddr*/ + \
-				6 + (NFS4_VERIFIER_SIZE >> 2))
+				XDR_QUADLEN(NFS4_VERIFIER_SIZE) + \
+				XDR_QUADLEN(NFS4_SETCLIENTID_NAMELEN) + \
+				1 /* sc_prog */ + \
+				XDR_QUADLEN(RPCBIND_MAXNETIDLEN) + \
+				XDR_QUADLEN(RPCBIND_MAXUADDRLEN) + \
+				1) /* sc_cb_ident */
 #define decode_setclientid_maxsz \
 				(op_decode_hdr_maxsz + \
 				2 + \
@@ -2515,14 +2517,12 @@ static int decode_attr_files_total(struct xdr_stream *xdr, uint32_t *bitmap, uin
 
 static int decode_pathname(struct xdr_stream *xdr, struct nfs4_pathname *path)
 {
-	int n;
+	u32 n;
 	__be32 *p;
 	int status = 0;
 
 	READ_BUF(4);
 	READ32(n);
-	if (n < 0)
-		goto out_eio;
 	if (n == 0)
 		goto root_path;
 	dprintk("path ");
@@ -2579,13 +2579,11 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st
 		goto out_eio;
 	res->nlocations = 0;
 	while (res->nlocations < n) {
-		int m;
+		u32 m;
 		struct nfs4_fs_location *loc = &res->locations[res->nlocations];
 
 		READ_BUF(4);
 		READ32(m);
-		if (m <= 0)
-			goto out_eio;
 
 		loc->nservers = 0;
 		dprintk("%s: servers ", __FUNCTION__);
@@ -2598,8 +2596,12 @@ static int decode_attr_fs_locations(struct xdr_stream *xdr, uint32_t *bitmap, st
 			if (loc->nservers < NFS4_FS_LOCATION_MAXSERVERS)
 				loc->nservers++;
 			else {
-				int i;
-				dprintk("%s: using first %d of %d servers returned for location %d\n", __FUNCTION__, NFS4_FS_LOCATION_MAXSERVERS, m, res->nlocations);
+				unsigned int i;
+				dprintk("%s: using first %u of %u servers "
+					"returned for location %u\n",
+						__FUNCTION__,
+						NFS4_FS_LOCATION_MAXSERVERS,
+						m, res->nlocations);
 				for (i = loc->nservers; i < m; i++) {
 					unsigned int len;
 					char *data;
@@ -3476,10 +3478,11 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
 	struct xdr_buf	*rcvbuf = &req->rq_rcv_buf;
 	struct page	*page = *rcvbuf->pages;
 	struct kvec	*iov = rcvbuf->head;
-	unsigned int	nr, pglen = rcvbuf->page_len;
+	size_t		hdrlen;
+	u32		recvd, pglen = rcvbuf->page_len;
 	__be32		*end, *entry, *p, *kaddr;
-	uint32_t	len, attrlen, xlen;
-	int 		hdrlen, recvd, status;
+	unsigned int	nr;
+	int		status;
 
 	status = decode_op_hdr(xdr, OP_READDIR);
 	if (status)
@@ -3503,6 +3506,7 @@ static int decode_readdir(struct xdr_stream *xdr, struct rpc_rqst *req, struct n
 	end = p + ((pglen + readdir->pgbase) >> 2);
 	entry = p;
 	for (nr = 0; *p++; nr++) {
+		u32 len, attrlen, xlen;
 		if (end - p < 3)
 			goto short_pkt;
 		dprintk("cookie = %Lu, ", *((unsigned long long *)p));
@@ -3551,7 +3555,8 @@ static int decode_readlink(struct xdr_stream *xdr, struct rpc_rqst *req)
 {
 	struct xdr_buf *rcvbuf = &req->rq_rcv_buf;
 	struct kvec *iov = rcvbuf->head;
-	int hdrlen, len, recvd;
+	size_t hdrlen;
+	u32 len, recvd;
 	__be32 *p;
 	char *kaddr;
 	int status;
@@ -3646,7 +3651,8 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req,
 	if (unlikely(bitmap[0] & (FATTR4_WORD0_ACL - 1U)))
 		return -EIO;
 	if (likely(bitmap[0] & FATTR4_WORD0_ACL)) {
-		int hdrlen, recvd;
+		size_t hdrlen;
+		u32 recvd;
 
 		/* We ignore &savep and don't do consistency checks on
 		 * the attr length.  Let userspace figure it out.... */

fs/nfs/pagelist.c

@@ -111,13 +111,14 @@ void nfs_unlock_request(struct nfs_page *req)
  * nfs_set_page_tag_locked - Tag a request as locked
  * @req:
  */
-static int nfs_set_page_tag_locked(struct nfs_page *req)
+int nfs_set_page_tag_locked(struct nfs_page *req)
 {
 	struct nfs_inode *nfsi = NFS_I(req->wb_context->path.dentry->d_inode);
 
-	if (!nfs_lock_request(req))
+	if (!nfs_lock_request_dontget(req))
 		return 0;
-	radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
+	if (req->wb_page != NULL)
+		radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
 	return 1;
 }
 
@@ -132,9 +133,10 @@ void nfs_clear_page_tag_locked(struct nfs_page *req)
 	if (req->wb_page != NULL) {
 		spin_lock(&inode->i_lock);
 		radix_tree_tag_clear(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
+		nfs_unlock_request(req);
 		spin_unlock(&inode->i_lock);
-	}
-	nfs_unlock_request(req);
+	} else
+		nfs_unlock_request(req);
 }
 
 /**
@@ -421,6 +423,7 @@ int nfs_scan_list(struct nfs_inode *nfsi,
 				goto out;
 			idx_start = req->wb_index + 1;
 			if (nfs_set_page_tag_locked(req)) {
+				kref_get(&req->wb_kref);
 				nfs_list_remove_request(req);
 				radix_tree_tag_clear(&nfsi->nfs_page_tree,
 						req->wb_index, tag);

fs/nfs/proc.c

@@ -565,16 +565,9 @@ static int nfs_read_done(struct rpc_task *task, struct nfs_read_data *data)
 	return 0;
 }
 
-static void nfs_proc_read_setup(struct nfs_read_data *data)
+static void nfs_proc_read_setup(struct nfs_read_data *data, struct rpc_message *msg)
 {
-	struct rpc_message	msg = {
-		.rpc_proc	= &nfs_procedures[NFSPROC_READ],
-		.rpc_argp	= &data->args,
-		.rpc_resp	= &data->res,
-		.rpc_cred	= data->cred,
-	};
-
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs_procedures[NFSPROC_READ];
 }
 
 static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
@@ -584,24 +577,15 @@ static int nfs_write_done(struct rpc_task *task, struct nfs_write_data *data)
 	return 0;
 }
 
-static void nfs_proc_write_setup(struct nfs_write_data *data, int how)
+static void nfs_proc_write_setup(struct nfs_write_data *data, struct rpc_message *msg)
 {
-	struct rpc_message	msg = {
-		.rpc_proc	= &nfs_procedures[NFSPROC_WRITE],
-		.rpc_argp	= &data->args,
-		.rpc_resp	= &data->res,
-		.rpc_cred	= data->cred,
-	};
-
 	/* Note: NFSv2 ignores @stable and always uses NFS_FILE_SYNC */
 	data->args.stable = NFS_FILE_SYNC;
-
-	/* Finalize the task. */
-	rpc_call_setup(&data->task, &msg, 0);
+	msg->rpc_proc = &nfs_procedures[NFSPROC_WRITE];
 }
 
 static void
-nfs_proc_commit_setup(struct nfs_write_data *data, int how)
+nfs_proc_commit_setup(struct nfs_write_data *data, struct rpc_message *msg)
 {
 	BUG();
 }
@@ -609,7 +593,9 @@ nfs_proc_commit_setup(struct nfs_write_data *data, int how)
 static int
 nfs_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
 {
-	return nlmclnt_proc(filp->f_path.dentry->d_inode, cmd, fl);
+	struct inode *inode = filp->f_path.dentry->d_inode;
+
+	return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
 }
 
 

fs/nfs/read.c

@@ -160,12 +160,26 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
 		const struct rpc_call_ops *call_ops,
 		unsigned int count, unsigned int offset)
 {
-	struct inode		*inode;
-	int flags;
+	struct inode *inode = req->wb_context->path.dentry->d_inode;
+	int swap_flags = IS_SWAPFILE(inode) ? NFS_RPC_SWAPFLAGS : 0;
+	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_argp = &data->args,
+		.rpc_resp = &data->res,
+		.rpc_cred = req->wb_context->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.task = &data->task,
+		.rpc_client = NFS_CLIENT(inode),
+		.rpc_message = &msg,
+		.callback_ops = call_ops,
+		.callback_data = data,
+		.flags = RPC_TASK_ASYNC | swap_flags,
+	};
 
 	data->req	  = req;
-	data->inode	  = inode = req->wb_context->path.dentry->d_inode;
-	data->cred	  = req->wb_context->cred;
+	data->inode	  = inode;
+	data->cred	  = msg.rpc_cred;
 
 	data->args.fh     = NFS_FH(inode);
 	data->args.offset = req_offset(req) + offset;
@@ -180,11 +194,7 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
 	nfs_fattr_init(&data->fattr);
 
 	/* Set up the initial task struct. */
-	flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
-	rpc_init_task(&data->task, NFS_CLIENT(inode), flags, call_ops, data);
-	NFS_PROTO(inode)->read_setup(data);
-
-	data->task.tk_cookie = (unsigned long)inode;
+	NFS_PROTO(inode)->read_setup(data, &msg);
 
 	dprintk("NFS: %5u initiated read call (req %s/%Ld, %u bytes @ offset %Lu)\n",
 			data->task.tk_pid,
@@ -192,6 +202,10 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
 			(long long)NFS_FILEID(inode),
 			count,
 			(unsigned long long)data->args.offset);
+
+	task = rpc_run_task(&task_setup_data);
+	if (!IS_ERR(task))
+		rpc_put_task(task);
 }
 
 static void
@@ -207,19 +221,6 @@ nfs_async_read_error(struct list_head *head)
 	}
 }
 
-/*
- * Start an async read operation
- */
-static void nfs_execute_read(struct nfs_read_data *data)
-{
-	struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
-	sigset_t oldset;
-
-	rpc_clnt_sigmask(clnt, &oldset);
-	rpc_execute(&data->task);
-	rpc_clnt_sigunmask(clnt, &oldset);
-}
-
 /*
  * Generate multiple requests to fill a single page.
  *
@@ -274,7 +275,6 @@ static int nfs_pagein_multi(struct inode *inode, struct list_head *head, unsigne
 				  rsize, offset);
 		offset += rsize;
 		nbytes -= rsize;
-		nfs_execute_read(data);
 	} while (nbytes != 0);
 
 	return 0;
@@ -312,8 +312,6 @@ static int nfs_pagein_one(struct inode *inode, struct list_head *head, unsigned
 	req = nfs_list_entry(data->pages.next);
 
 	nfs_read_rpcsetup(req, data, &nfs_read_full_ops, count, 0);
-
-	nfs_execute_read(data);
 	return 0;
 out_bad:
 	nfs_async_read_error(head);
@@ -338,7 +336,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
 	nfs_add_stats(data->inode, NFSIOS_SERVERREADBYTES, data->res.count);
 
 	if (task->tk_status == -ESTALE) {
-		set_bit(NFS_INO_STALE, &NFS_FLAGS(data->inode));
+		set_bit(NFS_INO_STALE, &NFS_I(data->inode)->flags);
 		nfs_mark_for_revalidate(data->inode);
 	}
 	return 0;

fs/nfs/super.c

@@ -45,6 +45,8 @@
 #include <linux/nfs_idmap.h>
 #include <linux/vfs.h>
 #include <linux/inet.h>
+#include <linux/in6.h>
+#include <net/ipv6.h>
 #include <linux/nfs_xdr.h>
 #include <linux/magic.h>
 #include <linux/parser.h>
@@ -83,11 +85,11 @@ enum {
 	Opt_actimeo,
 	Opt_namelen,
 	Opt_mountport,
-	Opt_mountprog, Opt_mountvers,
-	Opt_nfsprog, Opt_nfsvers,
+	Opt_mountvers,
+	Opt_nfsvers,
 
 	/* Mount options that take string arguments */
-	Opt_sec, Opt_proto, Opt_mountproto,
+	Opt_sec, Opt_proto, Opt_mountproto, Opt_mounthost,
 	Opt_addr, Opt_mountaddr, Opt_clientaddr,
 
 	/* Mount options that are ignored */
@@ -137,9 +139,7 @@ static match_table_t nfs_mount_option_tokens = {
 	{ Opt_userspace, "retry=%u" },
 	{ Opt_namelen, "namlen=%u" },
 	{ Opt_mountport, "mountport=%u" },
-	{ Opt_mountprog, "mountprog=%u" },
 	{ Opt_mountvers, "mountvers=%u" },
-	{ Opt_nfsprog, "nfsprog=%u" },
 	{ Opt_nfsvers, "nfsvers=%u" },
 	{ Opt_nfsvers, "vers=%u" },
 
@@ -148,7 +148,7 @@ static match_table_t nfs_mount_option_tokens = {
 	{ Opt_mountproto, "mountproto=%s" },
 	{ Opt_addr, "addr=%s" },
 	{ Opt_clientaddr, "clientaddr=%s" },
-	{ Opt_userspace, "mounthost=%s" },
+	{ Opt_mounthost, "mounthost=%s" },
 	{ Opt_mountaddr, "mountaddr=%s" },
 
 	{ Opt_err, NULL }
@@ -202,6 +202,7 @@ static int nfs_get_sb(struct file_system_type *, int, const char *, void *, stru
 static int nfs_xdev_get_sb(struct file_system_type *fs_type,
 		int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
 static void nfs_kill_super(struct super_block *);
+static void nfs_put_super(struct super_block *);
 
 static struct file_system_type nfs_fs_type = {
 	.owner		= THIS_MODULE,
@@ -223,6 +224,7 @@ static const struct super_operations nfs_sops = {
 	.alloc_inode	= nfs_alloc_inode,
 	.destroy_inode	= nfs_destroy_inode,
 	.write_inode	= nfs_write_inode,
+	.put_super	= nfs_put_super,
 	.statfs		= nfs_statfs,
 	.clear_inode	= nfs_clear_inode,
 	.umount_begin	= nfs_umount_begin,
@@ -325,6 +327,28 @@ void __exit unregister_nfs_fs(void)
 	unregister_filesystem(&nfs_fs_type);
 }
 
+void nfs_sb_active(struct nfs_server *server)
+{
+	atomic_inc(&server->active);
+}
+
+void nfs_sb_deactive(struct nfs_server *server)
+{
+	if (atomic_dec_and_test(&server->active))
+		wake_up(&server->active_wq);
+}
+
+static void nfs_put_super(struct super_block *sb)
+{
+	struct nfs_server *server = NFS_SB(sb);
+	/*
+	 * Make sure there are no outstanding ops to this server.
+	 * If so, wait for them to finish before allowing the
+	 * unmount to continue.
+	 */
+	wait_event(server->active_wq, atomic_read(&server->active) == 0);
+}
+
 /*
  * Deliver file system statistics to userspace
  */
@@ -455,8 +479,8 @@ static void nfs_show_mount_options(struct seq_file *m, struct nfs_server *nfss,
 	}
 	seq_printf(m, ",proto=%s",
 		   rpc_peeraddr2str(nfss->client, RPC_DISPLAY_PROTO));
-	seq_printf(m, ",timeo=%lu", 10U * clp->retrans_timeo / HZ);
-	seq_printf(m, ",retrans=%u", clp->retrans_count);
+	seq_printf(m, ",timeo=%lu", 10U * nfss->client->cl_timeout->to_initval / HZ);
+	seq_printf(m, ",retrans=%u", nfss->client->cl_timeout->to_retries);
 	seq_printf(m, ",sec=%s", nfs_pseudoflavour_to_name(nfss->client->cl_auth->au_flavor));
 }
 
@@ -469,8 +493,9 @@ static int nfs_show_options(struct seq_file *m, struct vfsmount *mnt)
 
 	nfs_show_mount_options(m, nfss, 0);
 
-	seq_printf(m, ",addr="NIPQUAD_FMT,
-		NIPQUAD(nfss->nfs_client->cl_addr.sin_addr));
+	seq_printf(m, ",addr=%s",
+			rpc_peeraddr2str(nfss->nfs_client->cl_rpcclient,
+							RPC_DISPLAY_ADDR));
 
 	return 0;
 }
@@ -507,7 +532,7 @@ static int nfs_show_stats(struct seq_file *m, struct vfsmount *mnt)
 	seq_printf(m, ",namelen=%d", nfss->namelen);
 
 #ifdef CONFIG_NFS_V4
-	if (nfss->nfs_client->cl_nfsversion == 4) {
+	if (nfss->nfs_client->rpc_ops->version == 4) {
 		seq_printf(m, "\n\tnfsv4:\t");
 		seq_printf(m, "bm0=0x%x", nfss->attr_bitmask[0]);
 		seq_printf(m, ",bm1=0x%x", nfss->attr_bitmask[1]);
@@ -575,22 +600,80 @@ static void nfs_umount_begin(struct vfsmount *vfsmnt, int flags)
 }
 
 /*
- * Sanity-check a server address provided by the mount command
+ * Set the port number in an address.  Be agnostic about the address family.
+ */
+static void nfs_set_port(struct sockaddr *sap, unsigned short port)
+{
+	switch (sap->sa_family) {
+	case AF_INET: {
+		struct sockaddr_in *ap = (struct sockaddr_in *)sap;
+		ap->sin_port = htons(port);
+		break;
+	}
+	case AF_INET6: {
+		struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
+		ap->sin6_port = htons(port);
+		break;
+	}
+	}
+}
+
+/*
+ * Sanity-check a server address provided by the mount command.
+ *
+ * Address family must be initialized, and address must not be
+ * the ANY address for that family.
  */
 static int nfs_verify_server_address(struct sockaddr *addr)
 {
 	switch (addr->sa_family) {
 	case AF_INET: {
-		struct sockaddr_in *sa = (struct sockaddr_in *) addr;
-		if (sa->sin_addr.s_addr != INADDR_ANY)
-			return 1;
-		break;
+		struct sockaddr_in *sa = (struct sockaddr_in *)addr;
+		return sa->sin_addr.s_addr != INADDR_ANY;
+	}
+	case AF_INET6: {
+		struct in6_addr *sa = &((struct sockaddr_in6 *)addr)->sin6_addr;
+		return !ipv6_addr_any(sa);
 	}
 	}
 
 	return 0;
 }
 
+/*
+ * Parse string addresses passed in via a mount option,
+ * and construct a sockaddr based on the result.
+ *
+ * If address parsing fails, set the sockaddr's address
+ * family to AF_UNSPEC to force nfs_verify_server_address()
+ * to punt the mount.
+ */
+static void nfs_parse_server_address(char *value,
+				     struct sockaddr *sap,
+				     size_t *len)
+{
+	if (strchr(value, ':')) {
+		struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
+		u8 *addr = (u8 *)&ap->sin6_addr.in6_u;
+
+		ap->sin6_family = AF_INET6;
+		*len = sizeof(*ap);
+		if (in6_pton(value, -1, addr, '\0', NULL))
+			return;
+	} else {
+		struct sockaddr_in *ap = (struct sockaddr_in *)sap;
+		u8 *addr = (u8 *)&ap->sin_addr.s_addr;
+
+		ap->sin_family = AF_INET;
+		*len = sizeof(*ap);
+		if (in4_pton(value, -1, addr, '\0', NULL))
+			return;
+	}
+
+	sap->sa_family = AF_UNSPEC;
+	*len = 0;
+}
+
 /*
  * Error-check and convert a string of mount options from user space into
  * a data structure
@@ -599,6 +682,7 @@ static int nfs_parse_mount_options(char *raw,
 				   struct nfs_parsed_mount_data *mnt)
 {
 	char *p, *string;
+	unsigned short port = 0;
 
 	if (!raw) {
 		dfprintk(MOUNT, "NFS: mount options string was NULL.\n");
@@ -701,7 +785,7 @@ static int nfs_parse_mount_options(char *raw,
 				return 0;
 			if (option < 0 || option > 65535)
 				return 0;
-			mnt->nfs_server.address.sin_port = htons(option);
+			port = option;
 			break;
 		case Opt_rsize:
 			if (match_int(args, &mnt->rsize))
@@ -763,13 +847,6 @@ static int nfs_parse_mount_options(char *raw,
 				return 0;
 			mnt->mount_server.port = option;
 			break;
-		case Opt_mountprog:
-			if (match_int(args, &option))
-				return 0;
-			if (option < 0)
-				return 0;
-			mnt->mount_server.program = option;
-			break;
 		case Opt_mountvers:
 			if (match_int(args, &option))
 				return 0;
@@ -777,13 +854,6 @@ static int nfs_parse_mount_options(char *raw,
 				return 0;
 			mnt->mount_server.version = option;
 			break;
-		case Opt_nfsprog:
-			if (match_int(args, &option))
-				return 0;
-			if (option < 0)
-				return 0;
-			mnt->nfs_server.program = option;
-			break;
 		case Opt_nfsvers:
 			if (match_int(args, &option))
 				return 0;
@@ -927,24 +997,32 @@ static int nfs_parse_mount_options(char *raw,
 			string = match_strdup(args);
 			if (string == NULL)
 				goto out_nomem;
-			mnt->nfs_server.address.sin_family = AF_INET;
-			mnt->nfs_server.address.sin_addr.s_addr =
-							in_aton(string);
+			nfs_parse_server_address(string, (struct sockaddr *)
+						 &mnt->nfs_server.address,
+						 &mnt->nfs_server.addrlen);
 			kfree(string);
 			break;
 		case Opt_clientaddr:
 			string = match_strdup(args);
 			if (string == NULL)
 				goto out_nomem;
+			kfree(mnt->client_address);
 			mnt->client_address = string;
 			break;
+		case Opt_mounthost:
+			string = match_strdup(args);
+			if (string == NULL)
+				goto out_nomem;
+			kfree(mnt->mount_server.hostname);
+			mnt->mount_server.hostname = string;
+			break;
 		case Opt_mountaddr:
 			string = match_strdup(args);
 			if (string == NULL)
 				goto out_nomem;
-			mnt->mount_server.address.sin_family = AF_INET;
-			mnt->mount_server.address.sin_addr.s_addr =
-							in_aton(string);
+			nfs_parse_server_address(string, (struct sockaddr *)
+						 &mnt->mount_server.address,
+						 &mnt->mount_server.addrlen);
 			kfree(string);
 			break;
 
@@ -957,6 +1035,8 @@ static int nfs_parse_mount_options(char *raw,
 		}
 	}
 
+	nfs_set_port((struct sockaddr *)&mnt->nfs_server.address, port);
+
 	return 1;
 
 out_nomem:
@@ -987,7 +1067,8 @@ out_unknown:
 static int nfs_try_mount(struct nfs_parsed_mount_data *args,
 			 struct nfs_fh *root_fh)
 {
-	struct sockaddr_in sin;
+	struct sockaddr *sap = (struct sockaddr *)&args->mount_server.address;
+	char *hostname;
 	int status;
 
 	if (args->mount_server.version == 0) {
@@ -997,25 +1078,32 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
 			args->mount_server.version = NFS_MNT_VERSION;
 	}
 
+	if (args->mount_server.hostname)
+		hostname = args->mount_server.hostname;
+	else
+		hostname = args->nfs_server.hostname;
+
 	/*
 	 * Construct the mount server's address.
 	 */
-	if (args->mount_server.address.sin_addr.s_addr != INADDR_ANY)
-		sin = args->mount_server.address;
-	else
-		sin = args->nfs_server.address;
+	if (args->mount_server.address.ss_family == AF_UNSPEC) {
+		memcpy(sap, &args->nfs_server.address,
+		       args->nfs_server.addrlen);
+		args->mount_server.addrlen = args->nfs_server.addrlen;
+	}
+
 	/*
 	 * autobind will be used if mount_server.port == 0
 	 */
-	sin.sin_port = htons(args->mount_server.port);
+	nfs_set_port(sap, args->mount_server.port);
 
 	/*
 	 * Now ask the mount server to map our export path
 	 * to a file handle.
 	 */
-	status = nfs_mount((struct sockaddr *) &sin,
-			   sizeof(sin),
-			   args->nfs_server.hostname,
+	status = nfs_mount(sap,
+			   args->mount_server.addrlen,
+			   hostname,
 			   args->nfs_server.export_path,
 			   args->mount_server.version,
 			   args->mount_server.protocol,
@@ -1023,8 +1111,8 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
 	if (status == 0)
 		return 0;
 
-	dfprintk(MOUNT, "NFS: unable to mount server " NIPQUAD_FMT
-			", error %d\n", NIPQUAD(sin.sin_addr.s_addr), status);
+	dfprintk(MOUNT, "NFS: unable to mount server %s, error %d",
+			hostname, status);
 	return status;
 }
 
@@ -1043,9 +1131,6 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
  *
  * + breaking back: trying proto=udp after proto=tcp, v2 after v3,
  *   mountproto=tcp after mountproto=udp, and so on
- *
- * XXX: as far as I can tell, changing the NFS program number is not
- *      supported in the NFS client.
  */
 static int nfs_validate_mount_data(void *options,
 				   struct nfs_parsed_mount_data *args,
@@ -1069,9 +1154,7 @@ static int nfs_validate_mount_data(void *options,
 	args->acdirmin		= 30;
 	args->acdirmax		= 60;
 	args->mount_server.protocol = XPRT_TRANSPORT_UDP;
-	args->mount_server.program = NFS_MNT_PROGRAM;
 	args->nfs_server.protocol = XPRT_TRANSPORT_TCP;
-	args->nfs_server.program = NFS_PROGRAM;
 
 	switch (data->version) {
 	case 1:
@@ -1102,9 +1185,6 @@ static int nfs_validate_mount_data(void *options,
 			memset(mntfh->data + mntfh->size, 0,
 			       sizeof(mntfh->data) - mntfh->size);
 
-		if (!nfs_verify_server_address((struct sockaddr *) &data->addr))
-			goto out_no_address;
-
 		/*
 		 * Translate to nfs_parsed_mount_data, which nfs_fill_super
 		 * can deal with.
@@ -1119,7 +1199,14 @@ static int nfs_validate_mount_data(void *options,
 		args->acregmax		= data->acregmax;
 		args->acdirmin		= data->acdirmin;
 		args->acdirmax		= data->acdirmax;
-		args->nfs_server.address = data->addr;
+
+		memcpy(&args->nfs_server.address, &data->addr,
+		       sizeof(data->addr));
+		args->nfs_server.addrlen = sizeof(data->addr);
+		if (!nfs_verify_server_address((struct sockaddr *)
+						&args->nfs_server.address))
+			goto out_no_address;
+
 		if (!(data->flags & NFS_MOUNT_TCP))
 			args->nfs_server.protocol = XPRT_TRANSPORT_UDP;
 		/* N.B. caller will free nfs_server.hostname in all cases */
@@ -1322,15 +1409,50 @@ static int nfs_set_super(struct super_block *s, void *data)
 	return ret;
 }
 
+static int nfs_compare_super_address(struct nfs_server *server1,
+				     struct nfs_server *server2)
+{
+	struct sockaddr *sap1, *sap2;
+
+	sap1 = (struct sockaddr *)&server1->nfs_client->cl_addr;
+	sap2 = (struct sockaddr *)&server2->nfs_client->cl_addr;
+
+	if (sap1->sa_family != sap2->sa_family)
+		return 0;
+
+	switch (sap1->sa_family) {
+	case AF_INET: {
+		struct sockaddr_in *sin1 = (struct sockaddr_in *)sap1;
+		struct sockaddr_in *sin2 = (struct sockaddr_in *)sap2;
+		if (sin1->sin_addr.s_addr != sin2->sin_addr.s_addr)
+			return 0;
+		if (sin1->sin_port != sin2->sin_port)
+			return 0;
+		break;
+	}
+	case AF_INET6: {
+		struct sockaddr_in6 *sin1 = (struct sockaddr_in6 *)sap1;
+		struct sockaddr_in6 *sin2 = (struct sockaddr_in6 *)sap2;
+		if (!ipv6_addr_equal(&sin1->sin6_addr, &sin2->sin6_addr))
+			return 0;
+		if (sin1->sin6_port != sin2->sin6_port)
+			return 0;
+		break;
+	}
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
 static int nfs_compare_super(struct super_block *sb, void *data)
 {
 	struct nfs_sb_mountdata *sb_mntdata = data;
 	struct nfs_server *server = sb_mntdata->server, *old = NFS_SB(sb);
 	int mntflags = sb_mntdata->mntflags;
 
-	if (memcmp(&old->nfs_client->cl_addr,
-				&server->nfs_client->cl_addr,
-				sizeof(old->nfs_client->cl_addr)) != 0)
+	if (!nfs_compare_super_address(old, server))
 		return 0;
 	/* Note: NFS_MOUNT_UNSHARED == NFS4_MOUNT_UNSHARED */
 	if (old->flags & NFS_MOUNT_UNSHARED)
@@ -1400,6 +1522,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
 
 out:
 	kfree(data.nfs_server.hostname);
+	kfree(data.mount_server.hostname);
 	return error;
 
 out_err_nosb:
@@ -1527,6 +1650,28 @@ static void nfs4_fill_super(struct super_block *sb)
 	nfs_initialise_sb(sb);
 }
 
+/*
+ * If the user didn't specify a port, set the port number to
+ * the NFS version 4 default port.
+ */
+static void nfs4_default_port(struct sockaddr *sap)
+{
+	switch (sap->sa_family) {
+	case AF_INET: {
+		struct sockaddr_in *ap = (struct sockaddr_in *)sap;
+		if (ap->sin_port == 0)
+			ap->sin_port = htons(NFS_PORT);
+		break;
+	}
+	case AF_INET6: {
+		struct sockaddr_in6 *ap = (struct sockaddr_in6 *)sap;
+		if (ap->sin6_port == 0)
+			ap->sin6_port = htons(NFS_PORT);
+		break;
+	}
+	}
+}
+
 /*
  * Validate NFSv4 mount options
  */
@@ -1534,6 +1679,7 @@ static int nfs4_validate_mount_data(void *options,
 				    struct nfs_parsed_mount_data *args,
 				    const char *dev_name)
 {
+	struct sockaddr_in *ap;
 	struct nfs4_mount_data *data = (struct nfs4_mount_data *)options;
 	char *c;
 
@@ -1554,18 +1700,21 @@ static int nfs4_validate_mount_data(void *options,
 
 	switch (data->version) {
 	case 1:
-		if (data->host_addrlen != sizeof(args->nfs_server.address))
+		ap = (struct sockaddr_in *)&args->nfs_server.address;
+		if (data->host_addrlen > sizeof(args->nfs_server.address))
 			goto out_no_address;
-		if (copy_from_user(&args->nfs_server.address,
-				   data->host_addr,
-				   sizeof(args->nfs_server.address)))
+		if (data->host_addrlen == 0)
+			goto out_no_address;
+		args->nfs_server.addrlen = data->host_addrlen;
+		if (copy_from_user(ap, data->host_addr, data->host_addrlen))
 			return -EFAULT;
-		if (args->nfs_server.address.sin_port == 0)
-			args->nfs_server.address.sin_port = htons(NFS_PORT);
 		if (!nfs_verify_server_address((struct sockaddr *)
 						&args->nfs_server.address))
 			goto out_no_address;
 
+		nfs4_default_port((struct sockaddr *)
+				  &args->nfs_server.address);
+
 		switch (data->auth_flavourlen) {
 		case 0:
 			args->auth_flavors[0] = RPC_AUTH_UNIX;
@@ -1623,6 +1772,9 @@ static int nfs4_validate_mount_data(void *options,
 						&args->nfs_server.address))
 			return -EINVAL;
 
+		nfs4_default_port((struct sockaddr *)
+				  &args->nfs_server.address);
+
 		switch (args->auth_flavor_len) {
 		case 0:
 			args->auth_flavors[0] = RPC_AUTH_UNIX;
@@ -1643,21 +1795,16 @@ static int nfs4_validate_mount_data(void *options,
 		len = c - dev_name;
 		if (len > NFS4_MAXNAMLEN)
 			return -ENAMETOOLONG;
-		args->nfs_server.hostname = kzalloc(len, GFP_KERNEL);
-		if (args->nfs_server.hostname == NULL)
-			return -ENOMEM;
-		strncpy(args->nfs_server.hostname, dev_name, len - 1);
+		/* N.B. caller will free nfs_server.hostname in all cases */
+		args->nfs_server.hostname = kstrndup(dev_name, len, GFP_KERNEL);
 
 		c++;			/* step over the ':' */
 		len = strlen(c);
 		if (len > NFS4_MAXPATHLEN)
 			return -ENAMETOOLONG;
-		args->nfs_server.export_path = kzalloc(len + 1, GFP_KERNEL);
-		if (args->nfs_server.export_path == NULL)
-			return -ENOMEM;
-		strncpy(args->nfs_server.export_path, c, len);
+		args->nfs_server.export_path = kstrndup(c, len, GFP_KERNEL);
 
-		dprintk("MNTPATH: %s\n", args->nfs_server.export_path);
+		dprintk("NFS: MNTPATH: '%s'\n", args->nfs_server.export_path);
 
 		if (args->client_address == NULL)
 			goto out_no_client_address;

fs/nfs/unlink.c

@@ -14,6 +14,8 @@
 #include <linux/sched.h>
 #include <linux/wait.h>
 
+#include "internal.h"
+
 struct nfs_unlinkdata {
 	struct hlist_node list;
 	struct nfs_removeargs args;
@@ -68,24 +70,6 @@ static void nfs_dec_sillycount(struct inode *dir)
 		wake_up(&nfsi->waitqueue);
 }
 
-/**
- * nfs_async_unlink_init - Initialize the RPC info
- * task: rpc_task of the sillydelete
- */
-static void nfs_async_unlink_init(struct rpc_task *task, void *calldata)
-{
-	struct nfs_unlinkdata *data = calldata;
-	struct inode *dir = data->dir;
-	struct rpc_message msg = {
-		.rpc_argp = &data->args,
-		.rpc_resp = &data->res,
-		.rpc_cred = data->cred,
-	};
-
-	NFS_PROTO(dir)->unlink_setup(&msg, dir);
-	rpc_call_setup(task, &msg, 0);
-}
-
 /**
  * nfs_async_unlink_done - Sillydelete post-processing
  * @task: rpc_task of the sillydelete
@@ -113,32 +97,45 @@ static void nfs_async_unlink_release(void *calldata)
 	struct nfs_unlinkdata	*data = calldata;
 
 	nfs_dec_sillycount(data->dir);
+	nfs_sb_deactive(NFS_SERVER(data->dir));
 	nfs_free_unlinkdata(data);
 }
 
 static const struct rpc_call_ops nfs_unlink_ops = {
-	.rpc_call_prepare = nfs_async_unlink_init,
 	.rpc_call_done = nfs_async_unlink_done,
 	.rpc_release = nfs_async_unlink_release,
 };
 
 static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct nfs_unlinkdata *data)
 {
+	struct rpc_message msg = {
+		.rpc_argp = &data->args,
+		.rpc_resp = &data->res,
+		.rpc_cred = data->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_message = &msg,
+		.callback_ops = &nfs_unlink_ops,
+		.callback_data = data,
+		.flags = RPC_TASK_ASYNC,
+	};
 	struct rpc_task *task;
 	struct dentry *alias;
 
 	alias = d_lookup(parent, &data->args.name);
 	if (alias != NULL) {
 		int ret = 0;
+
 		/*
 		 * Hey, we raced with lookup... See if we need to transfer
 		 * the sillyrename information to the aliased dentry.
 		 */
 		nfs_free_dname(data);
 		spin_lock(&alias->d_lock);
-		if (!(alias->d_flags & DCACHE_NFSFS_RENAMED)) {
+		if (alias->d_inode != NULL &&
+		    !(alias->d_flags & DCACHE_NFSFS_RENAMED)) {
 			alias->d_fsdata = data;
-			alias->d_flags ^= DCACHE_NFSFS_RENAMED;
+			alias->d_flags |= DCACHE_NFSFS_RENAMED;
 			ret = 1;
 		}
 		spin_unlock(&alias->d_lock);
@@ -151,10 +148,14 @@ static int nfs_do_call_unlink(struct dentry *parent, struct inode *dir, struct n
 		nfs_dec_sillycount(dir);
 		return 0;
 	}
+	nfs_sb_active(NFS_SERVER(dir));
 	data->args.fh = NFS_FH(dir);
 	nfs_fattr_init(&data->res.dir_attr);
 
-	task = rpc_run_task(NFS_CLIENT(dir), RPC_TASK_ASYNC, &nfs_unlink_ops, data);
+	NFS_PROTO(dir)->unlink_setup(&msg, dir);
+
+	task_setup_data.rpc_client = NFS_CLIENT(dir);
+	task = rpc_run_task(&task_setup_data);
 	if (!IS_ERR(task))
 		rpc_put_task(task);
 	return 1;

fs/nfs/write.c

@@ -196,7 +196,7 @@ static int nfs_writepage_setup(struct nfs_open_context *ctx, struct page *page,
 	}
 	/* Update file length */
 	nfs_grow_file(page, offset, count);
-	nfs_unlock_request(req);
+	nfs_clear_page_tag_locked(req);
 	return 0;
 }
 
@@ -252,7 +252,6 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
 				struct page *page)
 {
 	struct inode *inode = page->mapping->host;
-	struct nfs_inode *nfsi = NFS_I(inode);
 	struct nfs_page *req;
 	int ret;
 
@@ -263,10 +262,10 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
 			spin_unlock(&inode->i_lock);
 			return 0;
 		}
-		if (nfs_lock_request_dontget(req))
+		if (nfs_set_page_tag_locked(req))
 			break;
 		/* Note: If we hold the page lock, as is the case in nfs_writepage,
-		 *	 then the call to nfs_lock_request_dontget() will always
+		 *	 then the call to nfs_set_page_tag_locked() will always
 		 *	 succeed provided that someone hasn't already marked the
 		 *	 request as dirty (in which case we don't care).
 		 */
@@ -280,7 +279,7 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
 	if (test_bit(PG_NEED_COMMIT, &req->wb_flags)) {
 		/* This request is marked for commit */
 		spin_unlock(&inode->i_lock);
-		nfs_unlock_request(req);
+		nfs_clear_page_tag_locked(req);
 		nfs_pageio_complete(pgio);
 		return 0;
 	}
@@ -288,8 +287,6 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
 		spin_unlock(&inode->i_lock);
 		BUG();
 	}
-	radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index,
-			NFS_PAGE_TAG_LOCKED);
 	spin_unlock(&inode->i_lock);
 	nfs_pageio_add_request(pgio, req);
 	return 0;
@@ -381,6 +378,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
 	set_page_private(req->wb_page, (unsigned long)req);
 	nfsi->npages++;
 	kref_get(&req->wb_kref);
+	radix_tree_tag_set(&nfsi->nfs_page_tree, req->wb_index, NFS_PAGE_TAG_LOCKED);
 	return 0;
 }
 
@@ -596,7 +594,7 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context* ctx,
 		spin_lock(&inode->i_lock);
 		req = nfs_page_find_request_locked(page);
 		if (req) {
-			if (!nfs_lock_request_dontget(req)) {
+			if (!nfs_set_page_tag_locked(req)) {
 				int error;
 
 				spin_unlock(&inode->i_lock);
@@ -646,7 +644,7 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context* ctx,
 	    || req->wb_page != page
 	    || !nfs_dirty_request(req)
 	    || offset > rqend || end < req->wb_offset) {
-		nfs_unlock_request(req);
+		nfs_clear_page_tag_locked(req);
 		return ERR_PTR(-EBUSY);
 	}
 
@@ -755,7 +753,7 @@ static void nfs_writepage_release(struct nfs_page *req)
 	nfs_clear_page_tag_locked(req);
 }
 
-static inline int flush_task_priority(int how)
+static int flush_task_priority(int how)
 {
 	switch (how & (FLUSH_HIGHPRI|FLUSH_LOWPRI)) {
 		case FLUSH_HIGHPRI:
@@ -775,15 +773,31 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
 		unsigned int count, unsigned int offset,
 		int how)
 {
-	struct inode		*inode;
-	int flags;
+	struct inode *inode = req->wb_context->path.dentry->d_inode;
+	int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
+	int priority = flush_task_priority(how);
+	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_argp = &data->args,
+		.rpc_resp = &data->res,
+		.rpc_cred = req->wb_context->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = NFS_CLIENT(inode),
+		.task = &data->task,
+		.rpc_message = &msg,
+		.callback_ops = call_ops,
+		.callback_data = data,
+		.flags = flags,
+		.priority = priority,
+	};
 
 	/* Set up the RPC argument and reply structs
 	 * NB: take care not to mess about with data->commit et al. */
 
 	data->req = req;
 	data->inode = inode = req->wb_context->path.dentry->d_inode;
-	data->cred = req->wb_context->cred;
+	data->cred = msg.rpc_cred;
 
 	data->args.fh     = NFS_FH(inode);
 	data->args.offset = req_offset(req) + offset;
@@ -791,6 +805,12 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
 	data->args.pages  = data->pagevec;
 	data->args.count  = count;
 	data->args.context = req->wb_context;
+	data->args.stable  = NFS_UNSTABLE;
+	if (how & FLUSH_STABLE) {
+		data->args.stable = NFS_DATA_SYNC;
+		if (!NFS_I(inode)->ncommit)
+			data->args.stable = NFS_FILE_SYNC;
+	}
 
 	data->res.fattr   = &data->fattr;
 	data->res.count   = count;
@@ -798,12 +818,7 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
 	nfs_fattr_init(&data->fattr);
 
 	/* Set up the initial task struct.  */
-	flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
-	rpc_init_task(&data->task, NFS_CLIENT(inode), flags, call_ops, data);
-	NFS_PROTO(inode)->write_setup(data, how);
-
-	data->task.tk_priority = flush_task_priority(how);
-	data->task.tk_cookie = (unsigned long)inode;
+	NFS_PROTO(inode)->write_setup(data, &msg);
 
 	dprintk("NFS: %5u initiated write call "
 		"(req %s/%Ld, %u bytes @ offset %Lu)\n",
@@ -812,16 +827,10 @@ static void nfs_write_rpcsetup(struct nfs_page *req,
 		(long long)NFS_FILEID(inode),
 		count,
 		(unsigned long long)data->args.offset);
-}
-
-static void nfs_execute_write(struct nfs_write_data *data)
-{
-	struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
-	sigset_t oldset;
 
-	rpc_clnt_sigmask(clnt, &oldset);
-	rpc_execute(&data->task);
-	rpc_clnt_sigunmask(clnt, &oldset);
+	task = rpc_run_task(&task_setup_data);
+	if (!IS_ERR(task))
+		rpc_put_task(task);
 }
 
 /*
@@ -868,7 +877,6 @@ static int nfs_flush_multi(struct inode *inode, struct list_head *head, unsigned
 				   wsize, offset, how);
 		offset += wsize;
 		nbytes -= wsize;
-		nfs_execute_write(data);
 	} while (nbytes != 0);
 
 	return 0;
@@ -916,7 +924,6 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
 	/* Set up the argument struct */
 	nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, how);
 
-	nfs_execute_write(data);
 	return 0;
  out_bad:
 	while (!list_empty(head)) {
@@ -932,7 +939,7 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
 static void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
 				  struct inode *inode, int ioflags)
 {
-	int wsize = NFS_SERVER(inode)->wsize;
+	size_t wsize = NFS_SERVER(inode)->wsize;
 
 	if (wsize < PAGE_CACHE_SIZE)
 		nfs_pageio_init(pgio, inode, nfs_flush_multi, wsize, ioflags);
@@ -1146,19 +1153,33 @@ static void nfs_commit_rpcsetup(struct list_head *head,
 		struct nfs_write_data *data,
 		int how)
 {
-	struct nfs_page		*first;
-	struct inode		*inode;
-	int flags;
+	struct nfs_page *first = nfs_list_entry(head->next);
+	struct inode *inode = first->wb_context->path.dentry->d_inode;
+	int flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
+	int priority = flush_task_priority(how);
+	struct rpc_task *task;
+	struct rpc_message msg = {
+		.rpc_argp = &data->args,
+		.rpc_resp = &data->res,
+		.rpc_cred = first->wb_context->cred,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.task = &data->task,
+		.rpc_client = NFS_CLIENT(inode),
+		.rpc_message = &msg,
+		.callback_ops = &nfs_commit_ops,
+		.callback_data = data,
+		.flags = flags,
+		.priority = priority,
+	};
 
 	/* Set up the RPC argument and reply structs
 	 * NB: take care not to mess about with data->commit et al. */
 
 	list_splice_init(head, &data->pages);
-	first = nfs_list_entry(data->pages.next);
-	inode = first->wb_context->path.dentry->d_inode;
 
 	data->inode	  = inode;
-	data->cred	  = first->wb_context->cred;
+	data->cred	  = msg.rpc_cred;
 
 	data->args.fh     = NFS_FH(data->inode);
 	/* Note: we always request a commit of the entire inode */
@@ -1170,14 +1191,13 @@ static void nfs_commit_rpcsetup(struct list_head *head,
 	nfs_fattr_init(&data->fattr);
 
 	/* Set up the initial task struct.  */
-	flags = (how & FLUSH_SYNC) ? 0 : RPC_TASK_ASYNC;
-	rpc_init_task(&data->task, NFS_CLIENT(inode), flags, &nfs_commit_ops, data);
-	NFS_PROTO(inode)->commit_setup(data, how);
+	NFS_PROTO(inode)->commit_setup(data, &msg);
 
-	data->task.tk_priority = flush_task_priority(how);
-	data->task.tk_cookie = (unsigned long)inode;
-	
 	dprintk("NFS: %5u initiated commit call\n", data->task.tk_pid);
+
+	task = rpc_run_task(&task_setup_data);
+	if (!IS_ERR(task))
+		rpc_put_task(task);
 }
 
 /*
@@ -1197,7 +1217,6 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
 	/* Set up the argument struct */
 	nfs_commit_rpcsetup(head, data, how);
 
-	nfs_execute_write(data);
 	return 0;
  out_bad:
 	while (!list_empty(head)) {

include/linux/lockd/bind.h

@@ -32,10 +32,27 @@ struct nlmsvc_binding {
 
 extern struct nlmsvc_binding *	nlmsvc_ops;
 
+/*
+ * Similar to nfs_client_initdata, but without the NFS-specific
+ * rpc_ops field.
+ */
+struct nlmclnt_initdata {
+	const char		*hostname;
+	const struct sockaddr	*address;
+	size_t			addrlen;
+	unsigned short		protocol;
+	u32			nfs_version;
+};
+
 /*
  * Functions exported by the lockd module
  */
-extern int	nlmclnt_proc(struct inode *, int, struct file_lock *);
+
+extern struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init);
+extern void	nlmclnt_done(struct nlm_host *host);
+
+extern int	nlmclnt_proc(struct nlm_host *host, int cmd,
+					struct file_lock *fl);
 extern int	lockd_up(int proto);
 extern void	lockd_down(void);
 

include/linux/nfs_fs.h

@@ -196,28 +196,67 @@ struct nfs_inode {
 #define NFS_INO_STALE		(2)		/* possible stale inode */
 #define NFS_INO_ACL_LRU_SET	(3)		/* Inode is on the LRU list */
 
-static inline struct nfs_inode *NFS_I(struct inode *inode)
+static inline struct nfs_inode *NFS_I(const struct inode *inode)
 {
 	return container_of(inode, struct nfs_inode, vfs_inode);
 }
-#define NFS_SB(s)		((struct nfs_server *)(s->s_fs_info))
 
-#define NFS_FH(inode)			(&NFS_I(inode)->fh)
-#define NFS_SERVER(inode)		(NFS_SB(inode->i_sb))
-#define NFS_CLIENT(inode)		(NFS_SERVER(inode)->client)
-#define NFS_PROTO(inode)		(NFS_SERVER(inode)->nfs_client->rpc_ops)
-#define NFS_COOKIEVERF(inode)		(NFS_I(inode)->cookieverf)
-#define NFS_MINATTRTIMEO(inode) \
-	(S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \
-			       : NFS_SERVER(inode)->acregmin)
-#define NFS_MAXATTRTIMEO(inode) \
-	(S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \
-			       : NFS_SERVER(inode)->acregmax)
+static inline struct nfs_server *NFS_SB(const struct super_block *s)
+{
+	return (struct nfs_server *)(s->s_fs_info);
+}
+
+static inline struct nfs_fh *NFS_FH(const struct inode *inode)
+{
+	return &NFS_I(inode)->fh;
+}
+
+static inline struct nfs_server *NFS_SERVER(const struct inode *inode)
+{
+	return NFS_SB(inode->i_sb);
+}
+
+static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode)
+{
+	return NFS_SERVER(inode)->client;
+}
+
+static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode)
+{
+	return NFS_SERVER(inode)->nfs_client->rpc_ops;
+}
+
+static inline __be32 *NFS_COOKIEVERF(const struct inode *inode)
+{
+	return NFS_I(inode)->cookieverf;
+}
+
+static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode)
+{
+	struct nfs_server *nfss = NFS_SERVER(inode);
+	return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin;
+}
 
-#define NFS_FLAGS(inode)		(NFS_I(inode)->flags)
-#define NFS_STALE(inode)		(test_bit(NFS_INO_STALE, &NFS_FLAGS(inode)))
+static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode)
+{
+	struct nfs_server *nfss = NFS_SERVER(inode);
+	return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax;
+}
 
-#define NFS_FILEID(inode)		(NFS_I(inode)->fileid)
+static inline int NFS_STALE(const struct inode *inode)
+{
+	return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
+}
+
+static inline __u64 NFS_FILEID(const struct inode *inode)
+{
+	return NFS_I(inode)->fileid;
+}
+
+static inline void set_nfs_fileid(struct inode *inode, __u64 fileid)
+{
+	NFS_I(inode)->fileid = fileid;
+}
 
 static inline void nfs_mark_for_revalidate(struct inode *inode)
 {
@@ -237,7 +276,7 @@ static inline int nfs_server_capable(struct inode *inode, int cap)
 
 static inline int NFS_USE_READDIRPLUS(struct inode *inode)
 {
-	return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
+	return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags);
 }
 
 static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
@@ -366,6 +405,7 @@ extern const struct inode_operations nfs3_dir_inode_operations;
 extern const struct file_operations nfs_dir_operations;
 extern struct dentry_operations nfs_dentry_operations;
 
+extern void nfs_force_lookup_revalidate(struct inode *dir);
 extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr);
 extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags);
 extern void nfs_access_zap_cache(struct inode *inode);

include/linux/nfs_fs_sb.h

@@ -3,8 +3,12 @@
 
 #include <linux/list.h>
 #include <linux/backing-dev.h>
+#include <linux/wait.h>
+
+#include <asm/atomic.h>
 
 struct nfs_iostats;
+struct nlm_host;
 
 /*
  * The nfs_client identifies our client state to the server.
@@ -14,20 +18,19 @@ struct nfs_client {
 	int			cl_cons_state;	/* current construction state (-ve: init error) */
 #define NFS_CS_READY		0		/* ready to be used */
 #define NFS_CS_INITING		1		/* busy initialising */
-	int			cl_nfsversion;	/* NFS protocol version */
 	unsigned long		cl_res_state;	/* NFS resources state */
 #define NFS_CS_CALLBACK		1		/* - callback started */
 #define NFS_CS_IDMAP		2		/* - idmap started */
 #define NFS_CS_RENEWD		3		/* - renewd started */
-	struct sockaddr_in	cl_addr;	/* server identifier */
+	struct sockaddr_storage	cl_addr;	/* server identifier */
+	size_t			cl_addrlen;
 	char *			cl_hostname;	/* hostname of server */
 	struct list_head	cl_share_link;	/* link in global client list */
 	struct list_head	cl_superblocks;	/* List of nfs_server structs */
 
 	struct rpc_clnt *	cl_rpcclient;
 	const struct nfs_rpc_ops *rpc_ops;	/* NFS protocol vector */
-	unsigned long		retrans_timeo;	/* retransmit timeout */
-	unsigned int		retrans_count;	/* number of retransmit tries */
+	int			cl_proto;	/* Network transport protocol */
 
 #ifdef CONFIG_NFS_V4
 	u64			cl_clientid;	/* constant */
@@ -62,7 +65,7 @@ struct nfs_client {
 	/* Our own IP address, as a null-terminated string.
 	 * This is used to generate the clientid, and the callback address.
 	 */
-	char			cl_ipaddr[16];
+	char			cl_ipaddr[48];
 	unsigned char		cl_id_uniquifier;
 #endif
 };
@@ -78,6 +81,7 @@ struct nfs_server {
 	struct list_head	master_link;	/* link in master servers list */
 	struct rpc_clnt *	client;		/* RPC client handle */
 	struct rpc_clnt *	client_acl;	/* ACL RPC client handle */
+	struct nlm_host		*nlm_host;	/* NLM client handle */
 	struct nfs_iostats *	io_stats;	/* I/O statistics */
 	struct backing_dev_info	backing_dev_info;
 	atomic_long_t		writeback;	/* number of writeback pages */
@@ -110,6 +114,9 @@ struct nfs_server {
 						   filesystem */
 #endif
 	void (*destroy)(struct nfs_server *);
+
+	atomic_t active; /* Keep trace of any activity to this server */
+	wait_queue_head_t active_wq;  /* Wait for any activity to stop  */
 };
 
 /* Server capabilities */

include/linux/nfs_page.h

@@ -83,6 +83,7 @@ extern	void nfs_pageio_complete(struct nfs_pageio_descriptor *desc);
 extern	void nfs_pageio_cond_complete(struct nfs_pageio_descriptor *, pgoff_t);
 extern  int nfs_wait_on_request(struct nfs_page *);
 extern	void nfs_unlock_request(struct nfs_page *req);
+extern	int nfs_set_page_tag_locked(struct nfs_page *req);
 extern  void nfs_clear_page_tag_locked(struct nfs_page *req);
 
 
@@ -95,18 +96,6 @@ nfs_lock_request_dontget(struct nfs_page *req)
 	return !test_and_set_bit(PG_BUSY, &req->wb_flags);
 }
 
-/*
- * Lock the page of an asynchronous request and take a reference
- */
-static inline int
-nfs_lock_request(struct nfs_page *req)
-{
-	if (test_and_set_bit(PG_BUSY, &req->wb_flags))
-		return 0;
-	kref_get(&req->wb_kref);
-	return 1;
-}
-
 /**
  * nfs_list_add_request - Insert a request into a list
  * @req: request

include/linux/nfs_xdr.h

@@ -666,16 +666,17 @@ struct nfs4_rename_res {
 	struct nfs_fattr *		new_fattr;
 };
 
+#define NFS4_SETCLIENTID_NAMELEN	(56)
 struct nfs4_setclientid {
-	const nfs4_verifier *		sc_verifier;      /* request */
+	const nfs4_verifier *		sc_verifier;
 	unsigned int			sc_name_len;
-	char				sc_name[48];	  /* request */
-	u32				sc_prog;          /* request */
+	char				sc_name[NFS4_SETCLIENTID_NAMELEN];
+	u32				sc_prog;
 	unsigned int			sc_netid_len;
-	char				sc_netid[4];	  /* request */
+	char				sc_netid[RPCBIND_MAXNETIDLEN];
 	unsigned int			sc_uaddr_len;
-	char				sc_uaddr[24];     /* request */
-	u32				sc_cb_ident;      /* request */
+	char				sc_uaddr[RPCBIND_MAXUADDRLEN];
+	u32				sc_cb_ident;
 };
 
 struct nfs4_statfs_arg {
@@ -773,7 +774,7 @@ struct nfs_access_entry;
  * RPC procedure vector for NFSv2/NFSv3 demuxing
  */
 struct nfs_rpc_ops {
-	int	version;		/* Protocol version */
+	u32	version;		/* Protocol version */
 	struct dentry_operations *dentry_ops;
 	const struct inode_operations *dir_inode_ops;
 	const struct inode_operations *file_inode_ops;
@@ -816,11 +817,11 @@ struct nfs_rpc_ops {
 			     struct nfs_pathconf *);
 	int	(*set_capabilities)(struct nfs_server *, struct nfs_fh *);
 	__be32 *(*decode_dirent)(__be32 *, struct nfs_entry *, int plus);
-	void	(*read_setup)   (struct nfs_read_data *);
+	void	(*read_setup)   (struct nfs_read_data *, struct rpc_message *);
 	int	(*read_done)  (struct rpc_task *, struct nfs_read_data *);
-	void	(*write_setup)  (struct nfs_write_data *, int how);
+	void	(*write_setup)  (struct nfs_write_data *, struct rpc_message *);
 	int	(*write_done)  (struct rpc_task *, struct nfs_write_data *);
-	void	(*commit_setup) (struct nfs_write_data *, int how);
+	void	(*commit_setup) (struct nfs_write_data *, struct rpc_message *);
 	int	(*commit_done) (struct rpc_task *, struct nfs_write_data *);
 	int	(*file_open)   (struct inode *, struct file *);
 	int	(*file_release) (struct inode *, struct file *);

include/linux/sunrpc/clnt.h

@@ -46,6 +46,7 @@ struct rpc_clnt {
 				cl_autobind : 1;/* use getport() */
 
 	struct rpc_rtt *	cl_rtt;		/* RTO estimator data */
+	const struct rpc_timeout *cl_timeout;	/* Timeout strategy */
 
 	int			cl_nodelen;	/* nodename length */
 	char 			cl_nodename[UNX_MAXNODENAME];
@@ -54,6 +55,7 @@ struct rpc_clnt {
 	struct dentry *		cl_dentry;	/* inode */
 	struct rpc_clnt *	cl_parent;	/* Points to parent of clones */
 	struct rpc_rtt		cl_rtt_default;
+	struct rpc_timeout	cl_timeout_default;
 	struct rpc_program *	cl_program;
 	char			cl_inline_name[32];
 };
@@ -99,7 +101,7 @@ struct rpc_create_args {
 	struct sockaddr		*address;
 	size_t			addrsize;
 	struct sockaddr		*saddress;
-	struct rpc_timeout	*timeout;
+	const struct rpc_timeout *timeout;
 	char			*servername;
 	struct rpc_program	*program;
 	u32			version;
@@ -123,11 +125,10 @@ void		rpc_shutdown_client(struct rpc_clnt *);
 void		rpc_release_client(struct rpc_clnt *);
 
 int		rpcb_register(u32, u32, int, unsigned short, int *);
-int		rpcb_getport_sync(struct sockaddr_in *, __u32, __u32, int);
+int		rpcb_getport_sync(struct sockaddr_in *, u32, u32, int);
 void		rpcb_getport_async(struct rpc_task *);
 
-void		rpc_call_setup(struct rpc_task *, struct rpc_message *, int);
-
+void		rpc_call_start(struct rpc_task *);
 int		rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg,
 			       int flags, const struct rpc_call_ops *tk_ops,
 			       void *calldata);
@@ -142,7 +143,7 @@ void		rpc_setbufsize(struct rpc_clnt *, unsigned int, unsigned int);
 size_t		rpc_max_payload(struct rpc_clnt *);
 void		rpc_force_rebind(struct rpc_clnt *);
 size_t		rpc_peeraddr(struct rpc_clnt *, struct sockaddr *, size_t);
-char *		rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
+const char	*rpc_peeraddr2str(struct rpc_clnt *, enum rpc_display_format_t);
 
 #endif /* __KERNEL__ */
 #endif /* _LINUX_SUNRPC_CLNT_H */

include/linux/sunrpc/msg_prot.h

@@ -152,5 +152,44 @@ typedef __be32	rpc_fraghdr;
  */
 #define RPCBIND_MAXNETIDLEN	(4u)
 
+/*
+ * Universal addresses are introduced in RFC 1833 and further spelled
+ * out in RFC 3530.  RPCBIND_MAXUADDRLEN defines a maximum byte length
+ * of a universal address for use in allocating buffers and character
+ * arrays.
+ *
+ * Quoting RFC 3530, section 2.2:
+ *
+ * For TCP over IPv4 and for UDP over IPv4, the format of r_addr is the
+ * US-ASCII string:
+ *
+ *	h1.h2.h3.h4.p1.p2
+ *
+ * The prefix, "h1.h2.h3.h4", is the standard textual form for
+ * representing an IPv4 address, which is always four octets long.
+ * Assuming big-endian ordering, h1, h2, h3, and h4, are respectively,
+ * the first through fourth octets each converted to ASCII-decimal.
+ * Assuming big-endian ordering, p1 and p2 are, respectively, the first
+ * and second octets each converted to ASCII-decimal.  For example, if a
+ * host, in big-endian order, has an address of 0x0A010307 and there is
+ * a service listening on, in big endian order, port 0x020F (decimal
+ * 527), then the complete universal address is "10.1.3.7.2.15".
+ *
+ * ...
+ *
+ * For TCP over IPv6 and for UDP over IPv6, the format of r_addr is the
+ * US-ASCII string:
+ *
+ *	x1:x2:x3:x4:x5:x6:x7:x8.p1.p2
+ *
+ * The suffix "p1.p2" is the service port, and is computed the same way
+ * as with universal addresses for TCP and UDP over IPv4.  The prefix,
+ * "x1:x2:x3:x4:x5:x6:x7:x8", is the standard textual form for
+ * representing an IPv6 address as defined in Section 2.2 of [RFC2373].
+ * Additionally, the two alternative forms specified in Section 2.2 of
+ * [RFC2373] are also acceptable.
+ */
+#define RPCBIND_MAXUADDRLEN	(56u)
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_SUNRPC_MSGPROT_H_ */

include/linux/sunrpc/sched.h

@@ -56,8 +56,6 @@ struct rpc_task {
 	__u8			tk_garb_retry;
 	__u8			tk_cred_retry;
 
-	unsigned long		tk_cookie;	/* Cookie for batching tasks */
-
 	/*
 	 * timeout_fn   to be executed by timer bottom half
 	 * callback	to be executed after waking up
@@ -78,7 +76,6 @@ struct rpc_task {
 	struct timer_list	tk_timer;	/* kernel timer */
 	unsigned long		tk_timeout;	/* timeout for rpc_sleep() */
 	unsigned short		tk_flags;	/* misc flags */
-	unsigned char		tk_priority : 2;/* Task priority */
 	unsigned long		tk_runstate;	/* Task run status */
 	struct workqueue_struct	*tk_workqueue;	/* Normally rpciod, but could
 						 * be any workqueue
@@ -94,6 +91,9 @@ struct rpc_task {
 	unsigned long		tk_start;	/* RPC task init timestamp */
 	long			tk_rtt;		/* round-trip time (jiffies) */
 
+	pid_t			tk_owner;	/* Process id for batching tasks */
+	unsigned char		tk_priority : 2;/* Task priority */
+
 #ifdef RPC_DEBUG
 	unsigned short		tk_pid;		/* debugging aid */
 #endif
@@ -117,6 +117,15 @@ struct rpc_call_ops {
 	void (*rpc_release)(void *);
 };
 
+struct rpc_task_setup {
+	struct rpc_task *task;
+	struct rpc_clnt *rpc_client;
+	const struct rpc_message *rpc_message;
+	const struct rpc_call_ops *callback_ops;
+	void *callback_data;
+	unsigned short flags;
+	signed char priority;
+};
 
 /*
  * RPC task flags
@@ -180,10 +189,10 @@ struct rpc_call_ops {
  * Note: if you change these, you must also change
  * the task initialization definitions below.
  */
-#define RPC_PRIORITY_LOW	0
-#define RPC_PRIORITY_NORMAL	1
-#define RPC_PRIORITY_HIGH	2
-#define RPC_NR_PRIORITY		(RPC_PRIORITY_HIGH+1)
+#define RPC_PRIORITY_LOW	(-1)
+#define RPC_PRIORITY_NORMAL	(0)
+#define RPC_PRIORITY_HIGH	(1)
+#define RPC_NR_PRIORITY		(1 + RPC_PRIORITY_HIGH - RPC_PRIORITY_LOW)
 
 /*
  * RPC synchronization objects
@@ -191,7 +200,7 @@ struct rpc_call_ops {
 struct rpc_wait_queue {
 	spinlock_t		lock;
 	struct list_head	tasks[RPC_NR_PRIORITY];	/* task queue for each priority level */
-	unsigned long		cookie;			/* cookie of last task serviced */
+	pid_t			owner;			/* process id of last task serviced */
 	unsigned char		maxpriority;		/* maximum priority (0 if queue is not a priority queue) */
 	unsigned char		priority;		/* current priority */
 	unsigned char		count;			/* # task groups remaining serviced so far */
@@ -208,41 +217,13 @@ struct rpc_wait_queue {
  * performance of NFS operations such as read/write.
  */
 #define RPC_BATCH_COUNT			16
-
-#ifndef RPC_DEBUG
-# define RPC_WAITQ_INIT(var,qname) { \
-		.lock = __SPIN_LOCK_UNLOCKED(var.lock), \
-		.tasks = { \
-			[0] = LIST_HEAD_INIT(var.tasks[0]), \
-			[1] = LIST_HEAD_INIT(var.tasks[1]), \
-			[2] = LIST_HEAD_INIT(var.tasks[2]), \
-		}, \
-	}
-#else
-# define RPC_WAITQ_INIT(var,qname) { \
-		.lock = __SPIN_LOCK_UNLOCKED(var.lock), \
-		.tasks = { \
-			[0] = LIST_HEAD_INIT(var.tasks[0]), \
-			[1] = LIST_HEAD_INIT(var.tasks[1]), \
-			[2] = LIST_HEAD_INIT(var.tasks[2]), \
-		}, \
-		.name = qname, \
-	}
-#endif
-# define RPC_WAITQ(var,qname)      struct rpc_wait_queue var = RPC_WAITQ_INIT(var,qname)
-
 #define RPC_IS_PRIORITY(q)		((q)->maxpriority > 0)
 
 /*
  * Function prototypes
  */
-struct rpc_task *rpc_new_task(struct rpc_clnt *, int flags,
-				const struct rpc_call_ops *ops, void *data);
-struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
-				const struct rpc_call_ops *ops, void *data);
-void		rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt,
-				int flags, const struct rpc_call_ops *ops,
-				void *data);
+struct rpc_task *rpc_new_task(const struct rpc_task_setup *);
+struct rpc_task *rpc_run_task(const struct rpc_task_setup *);
 void		rpc_put_task(struct rpc_task *);
 void		rpc_exit_task(struct rpc_task *);
 void		rpc_release_calldata(const struct rpc_call_ops *, void *);

include/linux/sunrpc/xprt.h

@@ -120,7 +120,7 @@ struct rpc_xprt {
 	struct kref		kref;		/* Reference count */
 	struct rpc_xprt_ops *	ops;		/* transport methods */
 
-	struct rpc_timeout	timeout;	/* timeout parms */
+	const struct rpc_timeout *timeout;	/* timeout parms */
 	struct sockaddr_storage	addr;		/* server address */
 	size_t			addrlen;	/* size of server address */
 	int			prot;		/* IP protocol */
@@ -183,7 +183,7 @@ struct rpc_xprt {
 					bklog_u;	/* backlog queue utilization */
 	} stat;
 
-	char *			address_strings[RPC_DISPLAY_MAX];
+	const char		*address_strings[RPC_DISPLAY_MAX];
 };
 
 struct xprt_create {
@@ -191,7 +191,6 @@ struct xprt_create {
 	struct sockaddr *	srcaddr;	/* optional local address */
 	struct sockaddr *	dstaddr;	/* remote peer address */
 	size_t			addrlen;
-	struct rpc_timeout *	timeout;	/* optional timeout parameters */
 };
 
 struct xprt_class {
@@ -202,11 +201,6 @@ struct xprt_class {
 	char			name[32];
 };
 
-/*
- * Transport operations used by ULPs
- */
-void			xprt_set_timeout(struct rpc_timeout *to, unsigned int retr, unsigned long incr);
-
 /*
  * Generic internal transport functions
  */
@@ -245,7 +239,8 @@ void			xprt_adjust_cwnd(struct rpc_task *task, int result);
 struct rpc_rqst *	xprt_lookup_rqst(struct rpc_xprt *xprt, __be32 xid);
 void			xprt_complete_rqst(struct rpc_task *task, int copied);
 void			xprt_release_rqst_cong(struct rpc_task *task);
-void			xprt_disconnect(struct rpc_xprt *xprt);
+void			xprt_disconnect_done(struct rpc_xprt *xprt);
+void			xprt_force_disconnect(struct rpc_xprt *xprt);
 
 /*
  * Reserved bit positions in xprt->state
@@ -256,6 +251,7 @@ void			xprt_disconnect(struct rpc_xprt *xprt);
 #define XPRT_CLOSE_WAIT		(3)
 #define XPRT_BOUND		(4)
 #define XPRT_BINDING		(5)
+#define XPRT_CLOSING		(6)
 
 static inline void xprt_set_connected(struct rpc_xprt *xprt)
 {

net/sunrpc/auth.c

@@ -51,6 +51,7 @@ rpcauth_register(const struct rpc_authops *ops)
 	spin_unlock(&rpc_authflavor_lock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(rpcauth_register);
 
 int
 rpcauth_unregister(const struct rpc_authops *ops)
@@ -68,6 +69,7 @@ rpcauth_unregister(const struct rpc_authops *ops)
 	spin_unlock(&rpc_authflavor_lock);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(rpcauth_unregister);
 
 struct rpc_auth *
 rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt)
@@ -102,6 +104,7 @@ rpcauth_create(rpc_authflavor_t pseudoflavor, struct rpc_clnt *clnt)
 out:
 	return auth;
 }
+EXPORT_SYMBOL_GPL(rpcauth_create);
 
 void
 rpcauth_release(struct rpc_auth *auth)
@@ -151,6 +154,7 @@ rpcauth_init_credcache(struct rpc_auth *auth)
 	auth->au_credcache = new;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(rpcauth_init_credcache);
 
 /*
  * Destroy a list of credentials
@@ -213,6 +217,7 @@ rpcauth_destroy_credcache(struct rpc_auth *auth)
 		kfree(cache);
 	}
 }
+EXPORT_SYMBOL_GPL(rpcauth_destroy_credcache);
 
 /*
  * Remove stale credentials. Avoid sleeping inside the loop.
@@ -332,6 +337,7 @@ found:
 out:
 	return cred;
 }
+EXPORT_SYMBOL_GPL(rpcauth_lookup_credcache);
 
 struct rpc_cred *
 rpcauth_lookupcred(struct rpc_auth *auth, int flags)
@@ -350,6 +356,7 @@ rpcauth_lookupcred(struct rpc_auth *auth, int flags)
 	put_group_info(acred.group_info);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(rpcauth_lookupcred);
 
 void
 rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred,
@@ -366,7 +373,7 @@ rpcauth_init_cred(struct rpc_cred *cred, const struct auth_cred *acred,
 #endif
 	cred->cr_uid = acred->uid;
 }
-EXPORT_SYMBOL(rpcauth_init_cred);
+EXPORT_SYMBOL_GPL(rpcauth_init_cred);
 
 struct rpc_cred *
 rpcauth_bindcred(struct rpc_task *task)
@@ -378,6 +385,7 @@ rpcauth_bindcred(struct rpc_task *task)
 		.group_info = current->group_info,
 	};
 	struct rpc_cred *ret;
+	sigset_t oldset;
 	int flags = 0;
 
 	dprintk("RPC: %5u looking up %s cred\n",
@@ -385,7 +393,9 @@ rpcauth_bindcred(struct rpc_task *task)
 	get_group_info(acred.group_info);
 	if (task->tk_flags & RPC_TASK_ROOTCREDS)
 		flags |= RPCAUTH_LOOKUP_ROOTCREDS;
+	rpc_clnt_sigmask(task->tk_client, &oldset);
 	ret = auth->au_ops->lookup_cred(auth, &acred, flags);
+	rpc_clnt_sigunmask(task->tk_client, &oldset);
 	if (!IS_ERR(ret))
 		task->tk_msg.rpc_cred = ret;
 	else
@@ -435,6 +445,7 @@ need_lock:
 out_destroy:
 	cred->cr_ops->crdestroy(cred);
 }
+EXPORT_SYMBOL_GPL(put_rpccred);
 
 void
 rpcauth_unbindcred(struct rpc_task *task)

net/sunrpc/auth_gss/auth_gss.c

@@ -472,16 +472,15 @@ gss_pipe_upcall(struct file *filp, struct rpc_pipe_msg *msg,
 		char __user *dst, size_t buflen)
 {
 	char *data = (char *)msg->data + msg->copied;
-	ssize_t mlen = msg->len;
-	ssize_t left;
+	size_t mlen = min(msg->len, buflen);
+	unsigned long left;
 
-	if (mlen > buflen)
-		mlen = buflen;
 	left = copy_to_user(dst, data, mlen);
-	if (left < 0) {
-		msg->errno = left;
-		return left;
+	if (left == mlen) {
+		msg->errno = -EFAULT;
+		return -EFAULT;
 	}
+
 	mlen -= left;
 	msg->copied += mlen;
 	msg->errno = 0;

net/sunrpc/clnt.c

@@ -30,6 +30,7 @@
 #include <linux/smp_lock.h>
 #include <linux/utsname.h>
 #include <linux/workqueue.h>
+#include <linux/in6.h>
 
 #include <linux/sunrpc/clnt.h>
 #include <linux/sunrpc/rpc_pipe_fs.h>
@@ -121,8 +122,9 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name)
 	}
 }
 
-static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, struct rpc_program *program, u32 vers, rpc_authflavor_t flavor)
+static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt)
 {
+	struct rpc_program	*program = args->program;
 	struct rpc_version	*version;
 	struct rpc_clnt		*clnt = NULL;
 	struct rpc_auth		*auth;
@@ -131,13 +133,13 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
 
 	/* sanity check the name before trying to print it */
 	err = -EINVAL;
-	len = strlen(servname);
+	len = strlen(args->servername);
 	if (len > RPC_MAXNETNAMELEN)
 		goto out_no_rpciod;
 	len++;
 
 	dprintk("RPC:       creating %s client for %s (xprt %p)\n",
-			program->name, servname, xprt);
+			program->name, args->servername, xprt);
 
 	err = rpciod_up();
 	if (err)
@@ -145,7 +147,11 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
 	err = -EINVAL;
 	if (!xprt)
 		goto out_no_xprt;
-	if (vers >= program->nrvers || !(version = program->version[vers]))
+
+	if (args->version >= program->nrvers)
+		goto out_err;
+	version = program->version[args->version];
+	if (version == NULL)
 		goto out_err;
 
 	err = -ENOMEM;
@@ -157,12 +163,12 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
 	clnt->cl_server = clnt->cl_inline_name;
 	if (len > sizeof(clnt->cl_inline_name)) {
 		char *buf = kmalloc(len, GFP_KERNEL);
-		if (buf != 0)
+		if (buf != NULL)
 			clnt->cl_server = buf;
 		else
 			len = sizeof(clnt->cl_inline_name);
 	}
-	strlcpy(clnt->cl_server, servname, len);
+	strlcpy(clnt->cl_server, args->servername, len);
 
 	clnt->cl_xprt     = xprt;
 	clnt->cl_procinfo = version->procs;
@@ -182,8 +188,15 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
 	if (!xprt_bound(clnt->cl_xprt))
 		clnt->cl_autobind = 1;
 
+	clnt->cl_timeout = xprt->timeout;
+	if (args->timeout != NULL) {
+		memcpy(&clnt->cl_timeout_default, args->timeout,
+				sizeof(clnt->cl_timeout_default));
+		clnt->cl_timeout = &clnt->cl_timeout_default;
+	}
+
 	clnt->cl_rtt = &clnt->cl_rtt_default;
-	rpc_init_rtt(&clnt->cl_rtt_default, xprt->timeout.to_initval);
+	rpc_init_rtt(&clnt->cl_rtt_default, clnt->cl_timeout->to_initval);
 
 	kref_init(&clnt->cl_kref);
 
@@ -191,10 +204,10 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
 	if (err < 0)
 		goto out_no_path;
 
-	auth = rpcauth_create(flavor, clnt);
+	auth = rpcauth_create(args->authflavor, clnt);
 	if (IS_ERR(auth)) {
 		printk(KERN_INFO "RPC: Couldn't create auth handle (flavor %u)\n",
-				flavor);
+				args->authflavor);
 		err = PTR_ERR(auth);
 		goto out_no_auth;
 	}
@@ -245,9 +258,8 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
 		.srcaddr = args->saddress,
 		.dstaddr = args->address,
 		.addrlen = args->addrsize,
-		.timeout = args->timeout
 	};
-	char servername[20];
+	char servername[48];
 
 	xprt = xprt_create_transport(&xprtargs);
 	if (IS_ERR(xprt))
@@ -258,13 +270,34 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
 	 * up a string representation of the passed-in address.
 	 */
 	if (args->servername == NULL) {
-		struct sockaddr_in *addr =
-					(struct sockaddr_in *) args->address;
-		snprintf(servername, sizeof(servername), NIPQUAD_FMT,
-			NIPQUAD(addr->sin_addr.s_addr));
+		servername[0] = '\0';
+		switch (args->address->sa_family) {
+		case AF_INET: {
+			struct sockaddr_in *sin =
+					(struct sockaddr_in *)args->address;
+			snprintf(servername, sizeof(servername), NIPQUAD_FMT,
+				 NIPQUAD(sin->sin_addr.s_addr));
+			break;
+		}
+		case AF_INET6: {
+			struct sockaddr_in6 *sin =
+					(struct sockaddr_in6 *)args->address;
+			snprintf(servername, sizeof(servername), NIP6_FMT,
+				 NIP6(sin->sin6_addr));
+			break;
+		}
+		default:
+			/* caller wants default server name, but
+			 * address family isn't recognized. */
+			return ERR_PTR(-EINVAL);
+		}
 		args->servername = servername;
 	}
 
+	xprt = xprt_create_transport(&xprtargs);
+	if (IS_ERR(xprt))
+		return (struct rpc_clnt *)xprt;
+
 	/*
 	 * By default, kernel RPC client connects from a reserved port.
 	 * CAP_NET_BIND_SERVICE will not be set for unprivileged requesters,
@@ -275,8 +308,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
 	if (args->flags & RPC_CLNT_CREATE_NONPRIVPORT)
 		xprt->resvport = 0;
 
-	clnt = rpc_new_client(xprt, args->servername, args->program,
-				args->version, args->authflavor);
+	clnt = rpc_new_client(args, xprt);
 	if (IS_ERR(clnt))
 		return clnt;
 
@@ -322,7 +354,7 @@ rpc_clone_client(struct rpc_clnt *clnt)
 	new->cl_autobind = 0;
 	INIT_LIST_HEAD(&new->cl_tasks);
 	spin_lock_init(&new->cl_lock);
-	rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
+	rpc_init_rtt(&new->cl_rtt_default, clnt->cl_timeout->to_initval);
 	new->cl_metrics = rpc_alloc_iostats(clnt);
 	if (new->cl_metrics == NULL)
 		goto out_no_stats;
@@ -345,6 +377,7 @@ out_no_clnt:
 	dprintk("RPC:       %s: returned error %d\n", __FUNCTION__, err);
 	return ERR_PTR(err);
 }
+EXPORT_SYMBOL_GPL(rpc_clone_client);
 
 /*
  * Properly shut down an RPC client, terminating all outstanding
@@ -363,6 +396,7 @@ void rpc_shutdown_client(struct rpc_clnt *clnt)
 
 	rpc_release_client(clnt);
 }
+EXPORT_SYMBOL_GPL(rpc_shutdown_client);
 
 /*
  * Free an RPC client
@@ -467,6 +501,7 @@ struct rpc_clnt *rpc_bind_new_program(struct rpc_clnt *old,
 out:
 	return clnt;
 }
+EXPORT_SYMBOL_GPL(rpc_bind_new_program);
 
 /*
  * Default callback for async RPC calls
@@ -498,12 +533,12 @@ static void rpc_save_sigmask(sigset_t *oldset, int intr)
 	sigprocmask(SIG_BLOCK, &sigmask, oldset);
 }
 
-static inline void rpc_task_sigmask(struct rpc_task *task, sigset_t *oldset)
+static void rpc_task_sigmask(struct rpc_task *task, sigset_t *oldset)
 {
 	rpc_save_sigmask(oldset, !RPC_TASK_UNINTERRUPTIBLE(task));
 }
 
-static inline void rpc_restore_sigmask(sigset_t *oldset)
+static void rpc_restore_sigmask(sigset_t *oldset)
 {
 	sigprocmask(SIG_SETMASK, oldset, NULL);
 }
@@ -512,45 +547,49 @@ void rpc_clnt_sigmask(struct rpc_clnt *clnt, sigset_t *oldset)
 {
 	rpc_save_sigmask(oldset, clnt->cl_intr);
 }
+EXPORT_SYMBOL_GPL(rpc_clnt_sigmask);
 
 void rpc_clnt_sigunmask(struct rpc_clnt *clnt, sigset_t *oldset)
 {
 	rpc_restore_sigmask(oldset);
 }
+EXPORT_SYMBOL_GPL(rpc_clnt_sigunmask);
 
-static
-struct rpc_task *rpc_do_run_task(struct rpc_clnt *clnt,
-		struct rpc_message *msg,
-		int flags,
-		const struct rpc_call_ops *ops,
-		void *data)
+/**
+ * rpc_run_task - Allocate a new RPC task, then run rpc_execute against it
+ * @task_setup_data: pointer to task initialisation data
+ */
+struct rpc_task *rpc_run_task(const struct rpc_task_setup *task_setup_data)
 {
 	struct rpc_task *task, *ret;
 	sigset_t oldset;
 
-	task = rpc_new_task(clnt, flags, ops, data);
+	task = rpc_new_task(task_setup_data);
 	if (task == NULL) {
-		rpc_release_calldata(ops, data);
-		return ERR_PTR(-ENOMEM);
+		rpc_release_calldata(task_setup_data->callback_ops,
+				task_setup_data->callback_data);
+		ret = ERR_PTR(-ENOMEM);
+		goto out;
 	}
 
-	/* Mask signals on synchronous RPC calls and RPCSEC_GSS upcalls */
-	rpc_task_sigmask(task, &oldset);
-	if (msg != NULL) {
-		rpc_call_setup(task, msg, 0);
-		if (task->tk_status != 0) {
-			ret = ERR_PTR(task->tk_status);
-			rpc_put_task(task);
-			goto out;
-		}
+	if (task->tk_status != 0) {
+		ret = ERR_PTR(task->tk_status);
+		rpc_put_task(task);
+		goto out;
 	}
 	atomic_inc(&task->tk_count);
-	rpc_execute(task);
+	/* Mask signals on synchronous RPC calls and RPCSEC_GSS upcalls */
+	if (!RPC_IS_ASYNC(task)) {
+		rpc_task_sigmask(task, &oldset);
+		rpc_execute(task);
+		rpc_restore_sigmask(&oldset);
+	} else
+		rpc_execute(task);
 	ret = task;
 out:
-	rpc_restore_sigmask(&oldset);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(rpc_run_task);
 
 /**
  * rpc_call_sync - Perform a synchronous RPC call
@@ -561,17 +600,24 @@ out:
 int rpc_call_sync(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
 {
 	struct rpc_task	*task;
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = clnt,
+		.rpc_message = msg,
+		.callback_ops = &rpc_default_ops,
+		.flags = flags,
+	};
 	int status;
 
 	BUG_ON(flags & RPC_TASK_ASYNC);
 
-	task = rpc_do_run_task(clnt, msg, flags, &rpc_default_ops, NULL);
+	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
 	status = task->tk_status;
 	rpc_put_task(task);
 	return status;
 }
+EXPORT_SYMBOL_GPL(rpc_call_sync);
 
 /**
  * rpc_call_async - Perform an asynchronous RPC call
@@ -586,45 +632,28 @@ rpc_call_async(struct rpc_clnt *clnt, struct rpc_message *msg, int flags,
 	       const struct rpc_call_ops *tk_ops, void *data)
 {
 	struct rpc_task	*task;
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = clnt,
+		.rpc_message = msg,
+		.callback_ops = tk_ops,
+		.callback_data = data,
+		.flags = flags|RPC_TASK_ASYNC,
+	};
 
-	task = rpc_do_run_task(clnt, msg, flags|RPC_TASK_ASYNC, tk_ops, data);
+	task = rpc_run_task(&task_setup_data);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
 	rpc_put_task(task);
 	return 0;
 }
-
-/**
- * rpc_run_task - Allocate a new RPC task, then run rpc_execute against it
- * @clnt: pointer to RPC client
- * @flags: RPC flags
- * @ops: RPC call ops
- * @data: user call data
- */
-struct rpc_task *rpc_run_task(struct rpc_clnt *clnt, int flags,
-					const struct rpc_call_ops *tk_ops,
-					void *data)
-{
-	return rpc_do_run_task(clnt, NULL, flags, tk_ops, data);
-}
-EXPORT_SYMBOL(rpc_run_task);
+EXPORT_SYMBOL_GPL(rpc_call_async);
 
 void
-rpc_call_setup(struct rpc_task *task, struct rpc_message *msg, int flags)
+rpc_call_start(struct rpc_task *task)
 {
-	task->tk_msg   = *msg;
-	task->tk_flags |= flags;
-	/* Bind the user cred */
-	if (task->tk_msg.rpc_cred != NULL)
-		rpcauth_holdcred(task);
-	else
-		rpcauth_bindcred(task);
-
-	if (task->tk_status == 0)
-		task->tk_action = call_start;
-	else
-		task->tk_action = rpc_exit_task;
+	task->tk_action = call_start;
 }
+EXPORT_SYMBOL_GPL(rpc_call_start);
 
 /**
  * rpc_peeraddr - extract remote peer address from clnt's xprt
@@ -653,7 +682,8 @@ EXPORT_SYMBOL_GPL(rpc_peeraddr);
  * @format: address format
  *
  */
-char *rpc_peeraddr2str(struct rpc_clnt *clnt, enum rpc_display_format_t format)
+const char *rpc_peeraddr2str(struct rpc_clnt *clnt,
+			     enum rpc_display_format_t format)
 {
 	struct rpc_xprt *xprt = clnt->cl_xprt;
 
@@ -671,6 +701,7 @@ rpc_setbufsize(struct rpc_clnt *clnt, unsigned int sndsize, unsigned int rcvsize
 	if (xprt->ops->set_buffer_size)
 		xprt->ops->set_buffer_size(xprt, sndsize, rcvsize);
 }
+EXPORT_SYMBOL_GPL(rpc_setbufsize);
 
 /*
  * Return size of largest payload RPC client can support, in bytes
@@ -710,6 +741,7 @@ rpc_restart_call(struct rpc_task *task)
 
 	task->tk_action = call_start;
 }
+EXPORT_SYMBOL_GPL(rpc_restart_call);
 
 /*
  * 0.  Initial state
@@ -1137,7 +1169,7 @@ call_status(struct rpc_task *task)
 	case -ETIMEDOUT:
 		task->tk_action = call_timeout;
 		if (task->tk_client->cl_discrtry)
-			xprt_disconnect(task->tk_xprt);
+			xprt_force_disconnect(task->tk_xprt);
 		break;
 	case -ECONNREFUSED:
 	case -ENOTCONN:
@@ -1260,7 +1292,7 @@ out_retry:
 	req->rq_received = req->rq_private_buf.len = 0;
 	task->tk_status = 0;
 	if (task->tk_client->cl_discrtry)
-		xprt_disconnect(task->tk_xprt);
+		xprt_force_disconnect(task->tk_xprt);
 }
 
 /*
@@ -1517,9 +1549,15 @@ struct rpc_task *rpc_call_null(struct rpc_clnt *clnt, struct rpc_cred *cred, int
 		.rpc_proc = &rpcproc_null,
 		.rpc_cred = cred,
 	};
-	return rpc_do_run_task(clnt, &msg, flags, &rpc_default_ops, NULL);
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = clnt,
+		.rpc_message = &msg,
+		.callback_ops = &rpc_default_ops,
+		.flags = flags,
+	};
+	return rpc_run_task(&task_setup_data);
 }
-EXPORT_SYMBOL(rpc_call_null);
+EXPORT_SYMBOL_GPL(rpc_call_null);
 
 #ifdef RPC_DEBUG
 void rpc_show_tasks(void)

net/sunrpc/rpc_pipe.c

@@ -76,6 +76,16 @@ rpc_timeout_upcall_queue(struct work_struct *work)
 	rpc_purge_list(rpci, &free_list, destroy_msg, -ETIMEDOUT);
 }
 
+/**
+ * rpc_queue_upcall
+ * @inode: inode of upcall pipe on which to queue given message
+ * @msg: message to queue
+ *
+ * Call with an @inode created by rpc_mkpipe() to queue an upcall.
+ * A userspace process may then later read the upcall by performing a
+ * read on an open file for this inode.  It is up to the caller to
+ * initialize the fields of @msg (other than @msg->list) appropriately.
+ */
 int
 rpc_queue_upcall(struct inode *inode, struct rpc_pipe_msg *msg)
 {
@@ -103,6 +113,7 @@ out:
 	wake_up(&rpci->waitq);
 	return res;
 }
+EXPORT_SYMBOL(rpc_queue_upcall);
 
 static inline void
 rpc_inode_setowner(struct inode *inode, void *private)
@@ -512,8 +523,8 @@ rpc_get_inode(struct super_block *sb, int mode)
 /*
  * FIXME: This probably has races.
  */
-static void
-rpc_depopulate(struct dentry *parent, int start, int eof)
+static void rpc_depopulate(struct dentry *parent,
+			   unsigned long start, unsigned long eof)
 {
 	struct inode *dir = parent->d_inode;
 	struct list_head *pos, *next;
@@ -663,7 +674,16 @@ rpc_lookup_negative(char *path, struct nameidata *nd)
 	return dentry;
 }
 
-
+/**
+ * rpc_mkdir - Create a new directory in rpc_pipefs
+ * @path: path from the rpc_pipefs root to the new directory
+ * @rpc_clnt: rpc client to associate with this directory
+ *
+ * This creates a directory at the given @path associated with
+ * @rpc_clnt, which will contain a file named "info" with some basic
+ * information about the client, together with any "pipes" that may
+ * later be created using rpc_mkpipe().
+ */
 struct dentry *
 rpc_mkdir(char *path, struct rpc_clnt *rpc_client)
 {
@@ -699,6 +719,10 @@ err_dput:
 	goto out;
 }
 
+/**
+ * rpc_rmdir - Remove a directory created with rpc_mkdir()
+ * @dentry: directory to remove
+ */
 int
 rpc_rmdir(struct dentry *dentry)
 {
@@ -717,6 +741,25 @@ rpc_rmdir(struct dentry *dentry)
 	return error;
 }
 
+/**
+ * rpc_mkpipe - make an rpc_pipefs file for kernel<->userspace communication
+ * @parent: dentry of directory to create new "pipe" in
+ * @name: name of pipe
+ * @private: private data to associate with the pipe, for the caller's use
+ * @ops: operations defining the behavior of the pipe: upcall, downcall,
+ *	release_pipe, and destroy_msg.
+ *
+ * Data is made available for userspace to read by calls to
+ * rpc_queue_upcall().  The actual reads will result in calls to
+ * @ops->upcall, which will be called with the file pointer,
+ * message, and userspace buffer to copy to.
+ *
+ * Writes can come at any time, and do not necessarily have to be
+ * responses to upcalls.  They will result in calls to @msg->downcall.
+ *
+ * The @private argument passed here will be available to all these methods
+ * from the file pointer, via RPC_I(file->f_dentry->d_inode)->private.
+ */
 struct dentry *
 rpc_mkpipe(struct dentry *parent, const char *name, void *private, struct rpc_pipe_ops *ops, int flags)
 {
@@ -763,7 +806,16 @@ err_dput:
 			-ENOMEM);
 	goto out;
 }
+EXPORT_SYMBOL(rpc_mkpipe);
 
+/**
+ * rpc_unlink - remove a pipe
+ * @dentry: dentry for the pipe, as returned from rpc_mkpipe
+ *
+ * After this call, lookups will no longer find the pipe, and any
+ * attempts to read or write using preexisting opens of the pipe will
+ * return -EPIPE.
+ */
 int
 rpc_unlink(struct dentry *dentry)
 {
@@ -785,6 +837,7 @@ rpc_unlink(struct dentry *dentry)
 	dput(parent);
 	return error;
 }
+EXPORT_SYMBOL(rpc_unlink);
 
 /*
  * populate the filesystem

net/sunrpc/rpcb_clnt.c

@@ -54,45 +54,6 @@ enum {
 #define RPCB_HIGHPROC_3		RPCBPROC_TADDR2UADDR
 #define RPCB_HIGHPROC_4		RPCBPROC_GETSTAT
 
-/*
- * r_addr
- *
- * Quoting RFC 3530, section 2.2:
- *
- * For TCP over IPv4 and for UDP over IPv4, the format of r_addr is the
- * US-ASCII string:
- *
- *	h1.h2.h3.h4.p1.p2
- *
- * The prefix, "h1.h2.h3.h4", is the standard textual form for
- * representing an IPv4 address, which is always four octets long.
- * Assuming big-endian ordering, h1, h2, h3, and h4, are respectively,
- * the first through fourth octets each converted to ASCII-decimal.
- * Assuming big-endian ordering, p1 and p2 are, respectively, the first
- * and second octets each converted to ASCII-decimal.  For example, if a
- * host, in big-endian order, has an address of 0x0A010307 and there is
- * a service listening on, in big endian order, port 0x020F (decimal
- * 527), then the complete universal address is "10.1.3.7.2.15".
- *
- * ...
- *
- * For TCP over IPv6 and for UDP over IPv6, the format of r_addr is the
- * US-ASCII string:
- *
- *	x1:x2:x3:x4:x5:x6:x7:x8.p1.p2
- *
- * The suffix "p1.p2" is the service port, and is computed the same way
- * as with universal addresses for TCP and UDP over IPv4.  The prefix,
- * "x1:x2:x3:x4:x5:x6:x7:x8", is the standard textual form for
- * representing an IPv6 address as defined in Section 2.2 of [RFC2373].
- * Additionally, the two alternative forms specified in Section 2.2 of
- * [RFC2373] are also acceptable.
- *
- * XXX: Currently this implementation does not explicitly convert the
- *      stored address to US-ASCII on non-ASCII systems.
- */
-#define RPCB_MAXADDRLEN		(128u)
-
 /*
  * r_owner
  *
@@ -112,9 +73,9 @@ struct rpcbind_args {
 	u32			r_vers;
 	u32			r_prot;
 	unsigned short		r_port;
-	char *			r_netid;
-	char			r_addr[RPCB_MAXADDRLEN];
-	char *			r_owner;
+	const char *		r_netid;
+	const char *		r_addr;
+	const char *		r_owner;
 };
 
 static struct rpc_procinfo rpcb_procedures2[];
@@ -128,19 +89,6 @@ struct rpcb_info {
 static struct rpcb_info rpcb_next_version[];
 static struct rpcb_info rpcb_next_version6[];
 
-static void rpcb_getport_prepare(struct rpc_task *task, void *calldata)
-{
-	struct rpcbind_args *map = calldata;
-	struct rpc_xprt *xprt = map->r_xprt;
-	struct rpc_message msg = {
-		.rpc_proc	= rpcb_next_version[xprt->bind_index].rpc_proc,
-		.rpc_argp	= map,
-		.rpc_resp	= &map->r_port,
-	};
-
-	rpc_call_setup(task, &msg, 0);
-}
-
 static void rpcb_map_release(void *data)
 {
 	struct rpcbind_args *map = data;
@@ -150,7 +98,6 @@ static void rpcb_map_release(void *data)
 }
 
 static const struct rpc_call_ops rpcb_getport_ops = {
-	.rpc_call_prepare	= rpcb_getport_prepare,
 	.rpc_call_done		= rpcb_getport_done,
 	.rpc_release		= rpcb_map_release,
 };
@@ -162,12 +109,13 @@ static void rpcb_wake_rpcbind_waiters(struct rpc_xprt *xprt, int status)
 }
 
 static struct rpc_clnt *rpcb_create(char *hostname, struct sockaddr *srvaddr,
-					int proto, int version, int privileged)
+				    size_t salen, int proto, u32 version,
+				    int privileged)
 {
 	struct rpc_create_args args = {
 		.protocol	= proto,
 		.address	= srvaddr,
-		.addrsize	= sizeof(struct sockaddr_in),
+		.addrsize	= salen,
 		.servername	= hostname,
 		.program	= &rpcb_program,
 		.version	= version,
@@ -230,7 +178,7 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
 			prog, vers, prot, port);
 
 	rpcb_clnt = rpcb_create("localhost", (struct sockaddr *) &sin,
-					XPRT_TRANSPORT_UDP, 2, 1);
+				sizeof(sin), XPRT_TRANSPORT_UDP, 2, 1);
 	if (IS_ERR(rpcb_clnt))
 		return PTR_ERR(rpcb_clnt);
 
@@ -252,13 +200,15 @@ int rpcb_register(u32 prog, u32 vers, int prot, unsigned short port, int *okay)
  * @vers: RPC version number to bind
  * @prot: transport protocol to use to make this request
  *
+ * Return value is the requested advertised port number,
+ * or a negative errno value.
+ *
  * Called from outside the RPC client in a synchronous task context.
  * Uses default timeout parameters specified by underlying transport.
  *
- * XXX: Needs to support IPv6, and rpcbind versions 3 and 4
+ * XXX: Needs to support IPv6
  */
-int rpcb_getport_sync(struct sockaddr_in *sin, __u32 prog,
-		      __u32 vers, int prot)
+int rpcb_getport_sync(struct sockaddr_in *sin, u32 prog, u32 vers, int prot)
 {
 	struct rpcbind_args map = {
 		.r_prog		= prog,
@@ -272,14 +222,13 @@ int rpcb_getport_sync(struct sockaddr_in *sin, __u32 prog,
 		.rpc_resp	= &map.r_port,
 	};
 	struct rpc_clnt	*rpcb_clnt;
-	char hostname[40];
 	int status;
 
 	dprintk("RPC:       %s(" NIPQUAD_FMT ", %u, %u, %d)\n",
 		__FUNCTION__, NIPQUAD(sin->sin_addr.s_addr), prog, vers, prot);
 
-	sprintf(hostname, NIPQUAD_FMT, NIPQUAD(sin->sin_addr.s_addr));
-	rpcb_clnt = rpcb_create(hostname, (struct sockaddr *)sin, prot, 2, 0);
+	rpcb_clnt = rpcb_create(NULL, (struct sockaddr *)sin,
+				sizeof(*sin), prot, 2, 0);
 	if (IS_ERR(rpcb_clnt))
 		return PTR_ERR(rpcb_clnt);
 
@@ -295,6 +244,24 @@ int rpcb_getport_sync(struct sockaddr_in *sin, __u32 prog,
 }
 EXPORT_SYMBOL_GPL(rpcb_getport_sync);
 
+static struct rpc_task *rpcb_call_async(struct rpc_clnt *rpcb_clnt, struct rpcbind_args *map, int version)
+{
+	struct rpc_message msg = {
+		.rpc_proc = rpcb_next_version[version].rpc_proc,
+		.rpc_argp = map,
+		.rpc_resp = &map->r_port,
+	};
+	struct rpc_task_setup task_setup_data = {
+		.rpc_client = rpcb_clnt,
+		.rpc_message = &msg,
+		.callback_ops = &rpcb_getport_ops,
+		.callback_data = map,
+		.flags = RPC_TASK_ASYNC,
+	};
+
+	return rpc_run_task(&task_setup_data);
+}
+
 /**
  * rpcb_getport_async - obtain the port for a given RPC service on a given host
  * @task: task that is waiting for portmapper request
@@ -305,12 +272,14 @@ EXPORT_SYMBOL_GPL(rpcb_getport_sync);
 void rpcb_getport_async(struct rpc_task *task)
 {
 	struct rpc_clnt *clnt = task->tk_client;
-	int bind_version;
+	u32 bind_version;
 	struct rpc_xprt *xprt = task->tk_xprt;
 	struct rpc_clnt	*rpcb_clnt;
 	static struct rpcbind_args *map;
 	struct rpc_task	*child;
-	struct sockaddr addr;
+	struct sockaddr_storage addr;
+	struct sockaddr *sap = (struct sockaddr *)&addr;
+	size_t salen;
 	int status;
 	struct rpcb_info *info;
 
@@ -340,10 +309,10 @@ void rpcb_getport_async(struct rpc_task *task)
 		goto bailout_nofree;
 	}
 
-	rpc_peeraddr(clnt, (void *)&addr, sizeof(addr));
+	salen = rpc_peeraddr(clnt, sap, sizeof(addr));
 
 	/* Don't ever use rpcbind v2 for AF_INET6 requests */
-	switch (addr.sa_family) {
+	switch (sap->sa_family) {
 	case AF_INET:
 		info = rpcb_next_version;
 		break;
@@ -368,7 +337,7 @@ void rpcb_getport_async(struct rpc_task *task)
 	dprintk("RPC: %5u %s: trying rpcbind version %u\n",
 		task->tk_pid, __FUNCTION__, bind_version);
 
-	rpcb_clnt = rpcb_create(clnt->cl_server, &addr, xprt->prot,
+	rpcb_clnt = rpcb_create(clnt->cl_server, sap, salen, xprt->prot,
 				bind_version, 0);
 	if (IS_ERR(rpcb_clnt)) {
 		status = PTR_ERR(rpcb_clnt);
@@ -390,12 +359,10 @@ void rpcb_getport_async(struct rpc_task *task)
 	map->r_port = 0;
 	map->r_xprt = xprt_get(xprt);
 	map->r_netid = rpc_peeraddr2str(clnt, RPC_DISPLAY_NETID);
-	memcpy(map->r_addr,
-	       rpc_peeraddr2str(rpcb_clnt, RPC_DISPLAY_UNIVERSAL_ADDR),
-	       sizeof(map->r_addr));
+	map->r_addr = rpc_peeraddr2str(rpcb_clnt, RPC_DISPLAY_UNIVERSAL_ADDR);
 	map->r_owner = RPCB_OWNER_STRING;	/* ignored for GETADDR */
 
-	child = rpc_run_task(rpcb_clnt, RPC_TASK_ASYNC, &rpcb_getport_ops, map);
+	child = rpcb_call_async(rpcb_clnt, map, xprt->bind_index);
 	rpc_release_client(rpcb_clnt);
 	if (IS_ERR(child)) {
 		status = -EIO;
@@ -518,7 +485,7 @@ static int rpcb_decode_getaddr(struct rpc_rqst *req, __be32 *p,
 	 * Simple sanity check.  The smallest possible universal
 	 * address is an IPv4 address string containing 11 bytes.
 	 */
-	if (addr_len < 11 || addr_len > RPCB_MAXADDRLEN)
+	if (addr_len < 11 || addr_len > RPCBIND_MAXUADDRLEN)
 		goto out_err;
 
 	/*
@@ -569,7 +536,7 @@ out_err:
 #define RPCB_boolean_sz		(1u)
 
 #define RPCB_netid_sz		(1+XDR_QUADLEN(RPCBIND_MAXNETIDLEN))
-#define RPCB_addr_sz		(1+XDR_QUADLEN(RPCB_MAXADDRLEN))
+#define RPCB_addr_sz		(1+XDR_QUADLEN(RPCBIND_MAXUADDRLEN))
 #define RPCB_ownerstring_sz	(1+XDR_QUADLEN(RPCB_MAXOWNERLEN))
 
 #define RPCB_mappingargs_sz	RPCB_program_sz+RPCB_version_sz+	\

net/sunrpc/sched.c

@@ -45,7 +45,7 @@ static void			 rpc_release_task(struct rpc_task *task);
 /*
  * RPC tasks sit here while waiting for conditions to improve.
  */
-static RPC_WAITQ(delay_queue, "delayq");
+static struct rpc_wait_queue delay_queue;
 
 /*
  * rpciod-related stuff
@@ -135,7 +135,7 @@ static void __rpc_add_wait_queue_priority(struct rpc_wait_queue *queue, struct r
 	if (unlikely(task->tk_priority > queue->maxpriority))
 		q = &queue->tasks[queue->maxpriority];
 	list_for_each_entry(t, q, u.tk_wait.list) {
-		if (t->tk_cookie == task->tk_cookie) {
+		if (t->tk_owner == task->tk_owner) {
 			list_add_tail(&task->u.tk_wait.list, &t->u.tk_wait.links);
 			return;
 		}
@@ -208,26 +208,26 @@ static inline void rpc_set_waitqueue_priority(struct rpc_wait_queue *queue, int
 	queue->count = 1 << (priority * 2);
 }
 
-static inline void rpc_set_waitqueue_cookie(struct rpc_wait_queue *queue, unsigned long cookie)
+static inline void rpc_set_waitqueue_owner(struct rpc_wait_queue *queue, pid_t pid)
 {
-	queue->cookie = cookie;
+	queue->owner = pid;
 	queue->nr = RPC_BATCH_COUNT;
 }
 
 static inline void rpc_reset_waitqueue_priority(struct rpc_wait_queue *queue)
 {
 	rpc_set_waitqueue_priority(queue, queue->maxpriority);
-	rpc_set_waitqueue_cookie(queue, 0);
+	rpc_set_waitqueue_owner(queue, 0);
 }
 
-static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname, int maxprio)
+static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname, unsigned char nr_queues)
 {
 	int i;
 
 	spin_lock_init(&queue->lock);
 	for (i = 0; i < ARRAY_SIZE(queue->tasks); i++)
 		INIT_LIST_HEAD(&queue->tasks[i]);
-	queue->maxpriority = maxprio;
+	queue->maxpriority = nr_queues - 1;
 	rpc_reset_waitqueue_priority(queue);
 #ifdef RPC_DEBUG
 	queue->name = qname;
@@ -236,14 +236,14 @@ static void __rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const c
 
 void rpc_init_priority_wait_queue(struct rpc_wait_queue *queue, const char *qname)
 {
-	__rpc_init_priority_wait_queue(queue, qname, RPC_PRIORITY_HIGH);
+	__rpc_init_priority_wait_queue(queue, qname, RPC_NR_PRIORITY);
 }
 
 void rpc_init_wait_queue(struct rpc_wait_queue *queue, const char *qname)
 {
-	__rpc_init_priority_wait_queue(queue, qname, 0);
+	__rpc_init_priority_wait_queue(queue, qname, 1);
 }
-EXPORT_SYMBOL(rpc_init_wait_queue);
+EXPORT_SYMBOL_GPL(rpc_init_wait_queue);
 
 static int rpc_wait_bit_interruptible(void *word)
 {
@@ -303,7 +303,7 @@ int __rpc_wait_for_completion_task(struct rpc_task *task, int (*action)(void *))
 	return wait_on_bit(&task->tk_runstate, RPC_TASK_ACTIVE,
 			action, TASK_INTERRUPTIBLE);
 }
-EXPORT_SYMBOL(__rpc_wait_for_completion_task);
+EXPORT_SYMBOL_GPL(__rpc_wait_for_completion_task);
 
 /*
  * Make an RPC task runnable.
@@ -373,6 +373,7 @@ void rpc_sleep_on(struct rpc_wait_queue *q, struct rpc_task *task,
 	__rpc_sleep_on(q, task, action, timer);
 	spin_unlock_bh(&q->lock);
 }
+EXPORT_SYMBOL_GPL(rpc_sleep_on);
 
 /**
  * __rpc_do_wake_up_task - wake up a single rpc_task
@@ -444,6 +445,7 @@ void rpc_wake_up_task(struct rpc_task *task)
 	}
 	rcu_read_unlock_bh();
 }
+EXPORT_SYMBOL_GPL(rpc_wake_up_task);
 
 /*
  * Wake up the next task on a priority queue.
@@ -454,12 +456,12 @@ static struct rpc_task * __rpc_wake_up_next_priority(struct rpc_wait_queue *queu
 	struct rpc_task *task;
 
 	/*
-	 * Service a batch of tasks from a single cookie.
+	 * Service a batch of tasks from a single owner.
 	 */
 	q = &queue->tasks[queue->priority];
 	if (!list_empty(q)) {
 		task = list_entry(q->next, struct rpc_task, u.tk_wait.list);
-		if (queue->cookie == task->tk_cookie) {
+		if (queue->owner == task->tk_owner) {
 			if (--queue->nr)
 				goto out;
 			list_move_tail(&task->u.tk_wait.list, q);
@@ -468,7 +470,7 @@ static struct rpc_task * __rpc_wake_up_next_priority(struct rpc_wait_queue *queu
 		 * Check if we need to switch queues.
 		 */
 		if (--queue->count)
-			goto new_cookie;
+			goto new_owner;
 	}
 
 	/*
@@ -490,8 +492,8 @@ static struct rpc_task * __rpc_wake_up_next_priority(struct rpc_wait_queue *queu
 
 new_queue:
 	rpc_set_waitqueue_priority(queue, (unsigned int)(q - &queue->tasks[0]));
-new_cookie:
-	rpc_set_waitqueue_cookie(queue, task->tk_cookie);
+new_owner:
+	rpc_set_waitqueue_owner(queue, task->tk_owner);
 out:
 	__rpc_wake_up_task(task);
 	return task;
@@ -519,6 +521,7 @@ struct rpc_task * rpc_wake_up_next(struct rpc_wait_queue *queue)
 
 	return task;
 }
+EXPORT_SYMBOL_GPL(rpc_wake_up_next);
 
 /**
  * rpc_wake_up - wake up all rpc_tasks
@@ -544,6 +547,7 @@ void rpc_wake_up(struct rpc_wait_queue *queue)
 	spin_unlock(&queue->lock);
 	rcu_read_unlock_bh();
 }
+EXPORT_SYMBOL_GPL(rpc_wake_up);
 
 /**
  * rpc_wake_up_status - wake up all rpc_tasks and set their status value.
@@ -572,6 +576,7 @@ void rpc_wake_up_status(struct rpc_wait_queue *queue, int status)
 	spin_unlock(&queue->lock);
 	rcu_read_unlock_bh();
 }
+EXPORT_SYMBOL_GPL(rpc_wake_up_status);
 
 static void __rpc_atrun(struct rpc_task *task)
 {
@@ -586,6 +591,7 @@ void rpc_delay(struct rpc_task *task, unsigned long delay)
 	task->tk_timeout = delay;
 	rpc_sleep_on(&delay_queue, task, NULL, __rpc_atrun);
 }
+EXPORT_SYMBOL_GPL(rpc_delay);
 
 /*
  * Helper to call task->tk_ops->rpc_call_prepare
@@ -614,7 +620,7 @@ void rpc_exit_task(struct rpc_task *task)
 		}
 	}
 }
-EXPORT_SYMBOL(rpc_exit_task);
+EXPORT_SYMBOL_GPL(rpc_exit_task);
 
 void rpc_release_calldata(const struct rpc_call_ops *ops, void *calldata)
 {
@@ -808,39 +814,49 @@ EXPORT_SYMBOL_GPL(rpc_free);
 /*
  * Creation and deletion of RPC task structures
  */
-void rpc_init_task(struct rpc_task *task, struct rpc_clnt *clnt, int flags, const struct rpc_call_ops *tk_ops, void *calldata)
+static void rpc_init_task(struct rpc_task *task, const struct rpc_task_setup *task_setup_data)
 {
 	memset(task, 0, sizeof(*task));
 	setup_timer(&task->tk_timer, (void (*)(unsigned long))rpc_run_timer,
 			(unsigned long)task);
 	atomic_set(&task->tk_count, 1);
-	task->tk_client = clnt;
-	task->tk_flags  = flags;
-	task->tk_ops = tk_ops;
-	if (tk_ops->rpc_call_prepare != NULL)
-		task->tk_action = rpc_prepare_task;
-	task->tk_calldata = calldata;
+	task->tk_flags  = task_setup_data->flags;
+	task->tk_ops = task_setup_data->callback_ops;
+	task->tk_calldata = task_setup_data->callback_data;
 	INIT_LIST_HEAD(&task->tk_task);
 
 	/* Initialize retry counters */
 	task->tk_garb_retry = 2;
 	task->tk_cred_retry = 2;
 
-	task->tk_priority = RPC_PRIORITY_NORMAL;
-	task->tk_cookie = (unsigned long)current;
+	task->tk_priority = task_setup_data->priority - RPC_PRIORITY_LOW;
+	task->tk_owner = current->tgid;
 
 	/* Initialize workqueue for async tasks */
 	task->tk_workqueue = rpciod_workqueue;
 
-	if (clnt) {
-		kref_get(&clnt->cl_kref);
-		if (clnt->cl_softrtry)
+	task->tk_client = task_setup_data->rpc_client;
+	if (task->tk_client != NULL) {
+		kref_get(&task->tk_client->cl_kref);
+		if (task->tk_client->cl_softrtry)
 			task->tk_flags |= RPC_TASK_SOFT;
-		if (!clnt->cl_intr)
+		if (!task->tk_client->cl_intr)
 			task->tk_flags |= RPC_TASK_NOINTR;
 	}
 
-	BUG_ON(task->tk_ops == NULL);
+	if (task->tk_ops->rpc_call_prepare != NULL)
+		task->tk_action = rpc_prepare_task;
+
+	if (task_setup_data->rpc_message != NULL) {
+		memcpy(&task->tk_msg, task_setup_data->rpc_message, sizeof(task->tk_msg));
+		/* Bind the user cred */
+		if (task->tk_msg.rpc_cred != NULL)
+			rpcauth_holdcred(task);
+		else
+			rpcauth_bindcred(task);
+		if (task->tk_action == NULL)
+			rpc_call_start(task);
+	}
 
 	/* starting timestamp */
 	task->tk_start = jiffies;
@@ -865,18 +881,22 @@ static void rpc_free_task(struct rcu_head *rcu)
 /*
  * Create a new task for the specified client.
  */
-struct rpc_task *rpc_new_task(struct rpc_clnt *clnt, int flags, const struct rpc_call_ops *tk_ops, void *calldata)
+struct rpc_task *rpc_new_task(const struct rpc_task_setup *setup_data)
 {
-	struct rpc_task	*task;
-
-	task = rpc_alloc_task();
-	if (!task)
-		goto out;
+	struct rpc_task	*task = setup_data->task;
+	unsigned short flags = 0;
+
+	if (task == NULL) {
+		task = rpc_alloc_task();
+		if (task == NULL)
+			goto out;
+		flags = RPC_TASK_DYNAMIC;
+	}
 
-	rpc_init_task(task, clnt, flags, tk_ops, calldata);
+	rpc_init_task(task, setup_data);
 
+	task->tk_flags |= flags;
 	dprintk("RPC:       allocated task %p\n", task);
-	task->tk_flags |= RPC_TASK_DYNAMIC;
 out:
 	return task;
 }
@@ -902,7 +922,7 @@ void rpc_put_task(struct rpc_task *task)
 		call_rcu_bh(&task->u.tk_rcu, rpc_free_task);
 	rpc_release_calldata(tk_ops, calldata);
 }
-EXPORT_SYMBOL(rpc_put_task);
+EXPORT_SYMBOL_GPL(rpc_put_task);
 
 static void rpc_release_task(struct rpc_task *task)
 {
@@ -959,6 +979,7 @@ void rpc_killall_tasks(struct rpc_clnt *clnt)
 	}
 	spin_unlock(&clnt->cl_lock);
 }
+EXPORT_SYMBOL_GPL(rpc_killall_tasks);
 
 int rpciod_up(void)
 {
@@ -1038,6 +1059,11 @@ rpc_init_mempool(void)
 		goto err_nomem;
 	if (!rpciod_start())
 		goto err_nomem;
+	/*
+	 * The following is not strictly a mempool initialisation,
+	 * but there is no harm in doing it here
+	 */
+	rpc_init_wait_queue(&delay_queue, "delayq");
 	return 0;
 err_nomem:
 	rpc_destroy_mempool();

net/sunrpc/socklib.c

@@ -72,7 +72,7 @@ ssize_t xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base, struct
 	struct page	**ppage = xdr->pages;
 	unsigned int	len, pglen = xdr->page_len;
 	ssize_t		copied = 0;
-	int		ret;
+	size_t		ret;
 
 	len = xdr->head[0].iov_len;
 	if (base < len) {

net/sunrpc/stats.c

@@ -118,7 +118,7 @@ struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
 	new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
 	return new;
 }
-EXPORT_SYMBOL(rpc_alloc_iostats);
+EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
 
 /**
  * rpc_free_iostats - release an rpc_iostats structure
@@ -129,7 +129,7 @@ void rpc_free_iostats(struct rpc_iostats *stats)
 {
 	kfree(stats);
 }
-EXPORT_SYMBOL(rpc_free_iostats);
+EXPORT_SYMBOL_GPL(rpc_free_iostats);
 
 /**
  * rpc_count_iostats - tally up per-task stats
@@ -215,7 +215,7 @@ void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
 				metrics->om_execute * MILLISECS_PER_JIFFY);
 	}
 }
-EXPORT_SYMBOL(rpc_print_iostats);
+EXPORT_SYMBOL_GPL(rpc_print_iostats);
 
 /*
  * Register/unregister RPC proc files
@@ -241,12 +241,14 @@ rpc_proc_register(struct rpc_stat *statp)
 {
 	return do_register(statp->program->name, statp, &rpc_proc_fops);
 }
+EXPORT_SYMBOL_GPL(rpc_proc_register);
 
 void
 rpc_proc_unregister(const char *name)
 {
 	remove_proc_entry(name, proc_net_rpc);
 }
+EXPORT_SYMBOL_GPL(rpc_proc_unregister);
 
 struct proc_dir_entry *
 svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)

net/sunrpc/sunrpc_syms.c

@@ -22,45 +22,6 @@
 #include <linux/sunrpc/rpc_pipe_fs.h>
 #include <linux/sunrpc/xprtsock.h>
 
-/* RPC scheduler */
-EXPORT_SYMBOL(rpc_execute);
-EXPORT_SYMBOL(rpc_init_task);
-EXPORT_SYMBOL(rpc_sleep_on);
-EXPORT_SYMBOL(rpc_wake_up_next);
-EXPORT_SYMBOL(rpc_wake_up_task);
-EXPORT_SYMBOL(rpc_wake_up_status);
-
-/* RPC client functions */
-EXPORT_SYMBOL(rpc_clone_client);
-EXPORT_SYMBOL(rpc_bind_new_program);
-EXPORT_SYMBOL(rpc_shutdown_client);
-EXPORT_SYMBOL(rpc_killall_tasks);
-EXPORT_SYMBOL(rpc_call_sync);
-EXPORT_SYMBOL(rpc_call_async);
-EXPORT_SYMBOL(rpc_call_setup);
-EXPORT_SYMBOL(rpc_clnt_sigmask);
-EXPORT_SYMBOL(rpc_clnt_sigunmask);
-EXPORT_SYMBOL(rpc_delay);
-EXPORT_SYMBOL(rpc_restart_call);
-EXPORT_SYMBOL(rpc_setbufsize);
-EXPORT_SYMBOL(rpc_unlink);
-EXPORT_SYMBOL(rpc_wake_up);
-EXPORT_SYMBOL(rpc_queue_upcall);
-EXPORT_SYMBOL(rpc_mkpipe);
-
-/* Client transport */
-EXPORT_SYMBOL(xprt_set_timeout);
-
-/* Client credential cache */
-EXPORT_SYMBOL(rpcauth_register);
-EXPORT_SYMBOL(rpcauth_unregister);
-EXPORT_SYMBOL(rpcauth_create);
-EXPORT_SYMBOL(rpcauth_lookupcred);
-EXPORT_SYMBOL(rpcauth_lookup_credcache);
-EXPORT_SYMBOL(rpcauth_destroy_credcache);
-EXPORT_SYMBOL(rpcauth_init_credcache);
-EXPORT_SYMBOL(put_rpccred);
-
 /* RPC server stuff */
 EXPORT_SYMBOL(svc_create);
 EXPORT_SYMBOL(svc_create_thread);
@@ -81,8 +42,6 @@ EXPORT_SYMBOL(svc_set_client);
 
 /* RPC statistics */
 #ifdef CONFIG_PROC_FS
-EXPORT_SYMBOL(rpc_proc_register);
-EXPORT_SYMBOL(rpc_proc_unregister);
 EXPORT_SYMBOL(svc_proc_register);
 EXPORT_SYMBOL(svc_proc_unregister);
 EXPORT_SYMBOL(svc_seq_show);
@@ -105,31 +64,6 @@ EXPORT_SYMBOL(qword_get);
 EXPORT_SYMBOL(svcauth_unix_purge);
 EXPORT_SYMBOL(unix_domain_find);
 
-/* Generic XDR */
-EXPORT_SYMBOL(xdr_encode_string);
-EXPORT_SYMBOL(xdr_decode_string_inplace);
-EXPORT_SYMBOL(xdr_decode_netobj);
-EXPORT_SYMBOL(xdr_encode_netobj);
-EXPORT_SYMBOL(xdr_encode_pages);
-EXPORT_SYMBOL(xdr_inline_pages);
-EXPORT_SYMBOL(xdr_shift_buf);
-EXPORT_SYMBOL(xdr_encode_word);
-EXPORT_SYMBOL(xdr_decode_word);
-EXPORT_SYMBOL(xdr_encode_array2);
-EXPORT_SYMBOL(xdr_decode_array2);
-EXPORT_SYMBOL(xdr_buf_from_iov);
-EXPORT_SYMBOL(xdr_buf_subsegment);
-EXPORT_SYMBOL(xdr_buf_read_netobj);
-EXPORT_SYMBOL(read_bytes_from_xdr_buf);
-
-/* Debugging symbols */
-#ifdef RPC_DEBUG
-EXPORT_SYMBOL(rpc_debug);
-EXPORT_SYMBOL(nfs_debug);
-EXPORT_SYMBOL(nfsd_debug);
-EXPORT_SYMBOL(nlm_debug);
-#endif
-
 extern struct cache_detail ip_map_cache, unix_gid_cache;
 
 static int __init

net/sunrpc/sysctl.c

@@ -23,9 +23,16 @@
  * Declare the debug flags here
  */
 unsigned int	rpc_debug;
+EXPORT_SYMBOL_GPL(rpc_debug);
+
 unsigned int	nfs_debug;
+EXPORT_SYMBOL_GPL(nfs_debug);
+
 unsigned int	nfsd_debug;
+EXPORT_SYMBOL_GPL(nfsd_debug);
+
 unsigned int	nlm_debug;
+EXPORT_SYMBOL_GPL(nlm_debug);
 
 #ifdef RPC_DEBUG
 

net/sunrpc/xdr.c

@@ -28,6 +28,7 @@ xdr_encode_netobj(__be32 *p, const struct xdr_netobj *obj)
 	memcpy(p, obj->data, obj->len);
 	return p + XDR_QUADLEN(obj->len);
 }
+EXPORT_SYMBOL(xdr_encode_netobj);
 
 __be32 *
 xdr_decode_netobj(__be32 *p, struct xdr_netobj *obj)
@@ -40,6 +41,7 @@ xdr_decode_netobj(__be32 *p, struct xdr_netobj *obj)
 	obj->data = (u8 *) p;
 	return p + XDR_QUADLEN(len);
 }
+EXPORT_SYMBOL(xdr_decode_netobj);
 
 /**
  * xdr_encode_opaque_fixed - Encode fixed length opaque data
@@ -91,6 +93,7 @@ xdr_encode_string(__be32 *p, const char *string)
 {
 	return xdr_encode_array(p, string, strlen(string));
 }
+EXPORT_SYMBOL(xdr_encode_string);
 
 __be32 *
 xdr_decode_string_inplace(__be32 *p, char **sp, int *lenp, int maxlen)
@@ -103,6 +106,7 @@ xdr_decode_string_inplace(__be32 *p, char **sp, int *lenp, int maxlen)
 	*sp = (char *) p;
 	return p + XDR_QUADLEN(len);
 }
+EXPORT_SYMBOL(xdr_decode_string_inplace);
 
 void
 xdr_encode_pages(struct xdr_buf *xdr, struct page **pages, unsigned int base,
@@ -130,6 +134,7 @@ xdr_encode_pages(struct xdr_buf *xdr, struct page **pages, unsigned int base,
 	xdr->buflen += len;
 	xdr->len += len;
 }
+EXPORT_SYMBOL(xdr_encode_pages);
 
 void
 xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
@@ -151,7 +156,7 @@ xdr_inline_pages(struct xdr_buf *xdr, unsigned int offset,
 
 	xdr->buflen += len;
 }
-
+EXPORT_SYMBOL(xdr_inline_pages);
 
 /*
  * Helper routines for doing 'memmove' like operations on a struct xdr_buf
@@ -418,6 +423,7 @@ xdr_shift_buf(struct xdr_buf *buf, size_t len)
 {
 	xdr_shrink_bufhead(buf, len);
 }
+EXPORT_SYMBOL(xdr_shift_buf);
 
 /**
  * xdr_init_encode - Initialize a struct xdr_stream for sending data.
@@ -639,6 +645,7 @@ xdr_buf_from_iov(struct kvec *iov, struct xdr_buf *buf)
 	buf->page_len = 0;
 	buf->buflen = buf->len = iov->iov_len;
 }
+EXPORT_SYMBOL(xdr_buf_from_iov);
 
 /* Sets subbuf to the portion of buf of length len beginning base bytes
  * from the start of buf. Returns -1 if base of length are out of bounds. */
@@ -687,6 +694,7 @@ xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
 		return -1;
 	return 0;
 }
+EXPORT_SYMBOL(xdr_buf_subsegment);
 
 static void __read_bytes_from_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)
 {
@@ -717,6 +725,7 @@ int read_bytes_from_xdr_buf(struct xdr_buf *buf, unsigned int base, void *obj, u
 	__read_bytes_from_xdr_buf(&subbuf, obj, len);
 	return 0;
 }
+EXPORT_SYMBOL(read_bytes_from_xdr_buf);
 
 static void __write_bytes_to_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)
 {
@@ -760,6 +769,7 @@ xdr_decode_word(struct xdr_buf *buf, unsigned int base, u32 *obj)
 	*obj = ntohl(raw);
 	return 0;
 }
+EXPORT_SYMBOL(xdr_decode_word);
 
 int
 xdr_encode_word(struct xdr_buf *buf, unsigned int base, u32 obj)
@@ -768,6 +778,7 @@ xdr_encode_word(struct xdr_buf *buf, unsigned int base, u32 obj)
 
 	return write_bytes_to_xdr_buf(buf, base, &raw, sizeof(obj));
 }
+EXPORT_SYMBOL(xdr_encode_word);
 
 /* If the netobj starting offset bytes from the start of xdr_buf is contained
  * entirely in the head or the tail, set object to point to it; otherwise
@@ -805,6 +816,7 @@ int xdr_buf_read_netobj(struct xdr_buf *buf, struct xdr_netobj *obj, unsigned in
 	__read_bytes_from_xdr_buf(&subbuf, obj->data, obj->len);
 	return 0;
 }
+EXPORT_SYMBOL(xdr_buf_read_netobj);
 
 /* Returns 0 on success, or else a negative error code. */
 static int
@@ -1010,6 +1022,7 @@ xdr_decode_array2(struct xdr_buf *buf, unsigned int base,
 
 	return xdr_xcode_array2(buf, base, desc, 0);
 }
+EXPORT_SYMBOL(xdr_decode_array2);
 
 int
 xdr_encode_array2(struct xdr_buf *buf, unsigned int base,
@@ -1021,6 +1034,7 @@ xdr_encode_array2(struct xdr_buf *buf, unsigned int base,
 
 	return xdr_xcode_array2(buf, base, desc, 1);
 }
+EXPORT_SYMBOL(xdr_encode_array2);
 
 int
 xdr_process_buf(struct xdr_buf *buf, unsigned int offset, unsigned int len,

net/sunrpc/xprt.c

@@ -501,9 +501,10 @@ EXPORT_SYMBOL_GPL(xprt_set_retrans_timeout_def);
 void xprt_set_retrans_timeout_rtt(struct rpc_task *task)
 {
 	int timer = task->tk_msg.rpc_proc->p_timer;
-	struct rpc_rtt *rtt = task->tk_client->cl_rtt;
+	struct rpc_clnt *clnt = task->tk_client;
+	struct rpc_rtt *rtt = clnt->cl_rtt;
 	struct rpc_rqst *req = task->tk_rqstp;
-	unsigned long max_timeout = req->rq_xprt->timeout.to_maxval;
+	unsigned long max_timeout = clnt->cl_timeout->to_maxval;
 
 	task->tk_timeout = rpc_calc_rto(rtt, timer);
 	task->tk_timeout <<= rpc_ntimeo(rtt, timer) + req->rq_retries;
@@ -514,7 +515,7 @@ EXPORT_SYMBOL_GPL(xprt_set_retrans_timeout_rtt);
 
 static void xprt_reset_majortimeo(struct rpc_rqst *req)
 {
-	struct rpc_timeout *to = &req->rq_xprt->timeout;
+	const struct rpc_timeout *to = req->rq_task->tk_client->cl_timeout;
 
 	req->rq_majortimeo = req->rq_timeout;
 	if (to->to_exponential)
@@ -534,7 +535,7 @@ static void xprt_reset_majortimeo(struct rpc_rqst *req)
 int xprt_adjust_timeout(struct rpc_rqst *req)
 {
 	struct rpc_xprt *xprt = req->rq_xprt;
-	struct rpc_timeout *to = &xprt->timeout;
+	const struct rpc_timeout *to = req->rq_task->tk_client->cl_timeout;
 	int status = 0;
 
 	if (time_before(jiffies, req->rq_majortimeo)) {
@@ -568,17 +569,17 @@ static void xprt_autoclose(struct work_struct *work)
 	struct rpc_xprt *xprt =
 		container_of(work, struct rpc_xprt, task_cleanup);
 
-	xprt_disconnect(xprt);
 	xprt->ops->close(xprt);
+	clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
 	xprt_release_write(xprt, NULL);
 }
 
 /**
- * xprt_disconnect - mark a transport as disconnected
+ * xprt_disconnect_done - mark a transport as disconnected
  * @xprt: transport to flag for disconnect
  *
  */
-void xprt_disconnect(struct rpc_xprt *xprt)
+void xprt_disconnect_done(struct rpc_xprt *xprt)
 {
 	dprintk("RPC:       disconnected transport %p\n", xprt);
 	spin_lock_bh(&xprt->transport_lock);
@@ -586,7 +587,26 @@ void xprt_disconnect(struct rpc_xprt *xprt)
 	xprt_wake_pending_tasks(xprt, -ENOTCONN);
 	spin_unlock_bh(&xprt->transport_lock);
 }
-EXPORT_SYMBOL_GPL(xprt_disconnect);
+EXPORT_SYMBOL_GPL(xprt_disconnect_done);
+
+/**
+ * xprt_force_disconnect - force a transport to disconnect
+ * @xprt: transport to disconnect
+ *
+ */
+void xprt_force_disconnect(struct rpc_xprt *xprt)
+{
+	/* Don't race with the test_bit() in xprt_clear_locked() */
+	spin_lock_bh(&xprt->transport_lock);
+	set_bit(XPRT_CLOSE_WAIT, &xprt->state);
+	/* Try to schedule an autoclose RPC call */
+	if (test_and_set_bit(XPRT_LOCKED, &xprt->state) == 0)
+		queue_work(rpciod_workqueue, &xprt->task_cleanup);
+	else if (xprt->snd_task != NULL)
+		rpc_wake_up_task(xprt->snd_task);
+	spin_unlock_bh(&xprt->transport_lock);
+}
+EXPORT_SYMBOL_GPL(xprt_force_disconnect);
 
 static void
 xprt_init_autodisconnect(unsigned long data)
@@ -909,7 +929,7 @@ static void xprt_request_init(struct rpc_task *task, struct rpc_xprt *xprt)
 {
 	struct rpc_rqst	*req = task->tk_rqstp;
 
-	req->rq_timeout = xprt->timeout.to_initval;
+	req->rq_timeout = task->tk_client->cl_timeout->to_initval;
 	req->rq_task	= task;
 	req->rq_xprt    = xprt;
 	req->rq_buffer  = NULL;
@@ -958,22 +978,6 @@ void xprt_release(struct rpc_task *task)
 	spin_unlock(&xprt->reserve_lock);
 }
 
-/**
- * xprt_set_timeout - set constant RPC timeout
- * @to: RPC timeout parameters to set up
- * @retr: number of retries
- * @incr: amount of increase after each retry
- *
- */
-void xprt_set_timeout(struct rpc_timeout *to, unsigned int retr, unsigned long incr)
-{
-	to->to_initval   =
-	to->to_increment = incr;
-	to->to_maxval    = to->to_initval + (incr * retr);
-	to->to_retries   = retr;
-	to->to_exponential = 0;
-}
-
 /**
  * xprt_create_transport - create an RPC transport
  * @args: rpc transport creation arguments

net/sunrpc/xprtrdma/rpc_rdma.c

@@ -83,7 +83,7 @@ static const char transfertypes[][12] = {
  */
 
 static int
-rpcrdma_convert_iovs(struct xdr_buf *xdrbuf, int pos,
+rpcrdma_convert_iovs(struct xdr_buf *xdrbuf, unsigned int pos,
 	enum rpcrdma_chunktype type, struct rpcrdma_mr_seg *seg, int nsegs)
 {
 	int len, n = 0, p;
@@ -169,7 +169,7 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
 	struct rpcrdma_req *req = rpcr_to_rdmar(rqst);
 	struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(rqst->rq_task->tk_xprt);
 	int nsegs, nchunks = 0;
-	int pos;
+	unsigned int pos;
 	struct rpcrdma_mr_seg *seg = req->rl_segments;
 	struct rpcrdma_read_chunk *cur_rchunk = NULL;
 	struct rpcrdma_write_array *warray = NULL;
@@ -213,7 +213,7 @@ rpcrdma_create_chunks(struct rpc_rqst *rqst, struct xdr_buf *target,
 					(__be32 *)&cur_rchunk->rc_target.rs_offset,
 					seg->mr_base);
 			dprintk("RPC:       %s: read chunk "
-				"elem %d@0x%llx:0x%x pos %d (%s)\n", __func__,
+				"elem %d@0x%llx:0x%x pos %u (%s)\n", __func__,
 				seg->mr_len, (unsigned long long)seg->mr_base,
 				seg->mr_rkey, pos, n < nsegs ? "more" : "last");
 			cur_rchunk++;
@@ -552,7 +552,7 @@ rpcrdma_marshal_req(struct rpc_rqst *rqst)
  * RDMA'd by server. See map at rpcrdma_create_chunks()! :-)
  */
 static int
-rpcrdma_count_chunks(struct rpcrdma_rep *rep, int max, int wrchunk, __be32 **iptrp)
+rpcrdma_count_chunks(struct rpcrdma_rep *rep, unsigned int max, int wrchunk, __be32 **iptrp)
 {
 	unsigned int i, total_len;
 	struct rpcrdma_write_chunk *cur_wchunk;

net/sunrpc/xprtrdma/transport.c

@@ -212,12 +212,16 @@ xprt_rdma_format_addresses(struct rpc_xprt *xprt)
 static void
 xprt_rdma_free_addresses(struct rpc_xprt *xprt)
 {
-	kfree(xprt->address_strings[RPC_DISPLAY_ADDR]);
-	kfree(xprt->address_strings[RPC_DISPLAY_PORT]);
-	kfree(xprt->address_strings[RPC_DISPLAY_ALL]);
-	kfree(xprt->address_strings[RPC_DISPLAY_HEX_ADDR]);
-	kfree(xprt->address_strings[RPC_DISPLAY_HEX_PORT]);
-	kfree(xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR]);
+	unsigned int i;
+
+	for (i = 0; i < RPC_DISPLAY_MAX; i++)
+		switch (i) {
+		case RPC_DISPLAY_PROTO:
+		case RPC_DISPLAY_NETID:
+			continue;
+		default:
+			kfree(xprt->address_strings[i]);
+		}
 }
 
 static void
@@ -289,6 +293,11 @@ xprt_rdma_destroy(struct rpc_xprt *xprt)
 	module_put(THIS_MODULE);
 }
 
+static const struct rpc_timeout xprt_rdma_default_timeout = {
+	.to_initval = 60 * HZ,
+	.to_maxval = 60 * HZ,
+};
+
 /**
  * xprt_setup_rdma - Set up transport to use RDMA
  *
@@ -327,7 +336,7 @@ xprt_setup_rdma(struct xprt_create *args)
 	}
 
 	/* 60 second timeout, no retries */
-	xprt_set_timeout(&xprt->timeout, 0, 60UL * HZ);
+	xprt->timeout = &xprt_rdma_default_timeout;
 	xprt->bind_timeout = (60U * HZ);
 	xprt->connect_timeout = (60U * HZ);
 	xprt->reestablish_timeout = (5U * HZ);
@@ -449,7 +458,7 @@ xprt_rdma_close(struct rpc_xprt *xprt)
 	struct rpcrdma_xprt *r_xprt = rpcx_to_rdmax(xprt);
 
 	dprintk("RPC:       %s: closing\n", __func__);
-	xprt_disconnect(xprt);
+	xprt_disconnect_done(xprt);
 	(void) rpcrdma_ep_disconnect(&r_xprt->rx_ep, &r_xprt->rx_ia);
 }
 
@@ -682,7 +691,7 @@ xprt_rdma_send_request(struct rpc_task *task)
 	}
 
 	if (rpcrdma_ep_post(&r_xprt->rx_ia, &r_xprt->rx_ep, req)) {
-		xprt_disconnect(xprt);
+		xprt_disconnect_done(xprt);
 		return -ENOTCONN;	/* implies disconnect */
 	}
 

net/sunrpc/xprtrdma/verbs.c

@@ -522,7 +522,7 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
 				struct rpcrdma_create_data_internal *cdata)
 {
 	struct ib_device_attr devattr;
-	int rc;
+	int rc, err;
 
 	rc = ib_query_device(ia->ri_id->device, &devattr);
 	if (rc) {
@@ -648,8 +648,10 @@ rpcrdma_ep_create(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia,
 	return 0;
 
 out2:
-	if (ib_destroy_cq(ep->rep_cq))
-		;
+	err = ib_destroy_cq(ep->rep_cq);
+	if (err)
+		dprintk("RPC:       %s: ib_destroy_cq returned %i\n",
+			__func__, err);
 out1:
 	return rc;
 }

net/sunrpc/xprtsock.c

@@ -280,7 +280,9 @@ static inline struct sockaddr_in6 *xs_addr_in6(struct rpc_xprt *xprt)
 	return (struct sockaddr_in6 *) &xprt->addr;
 }
 
-static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt)
+static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt,
+					  const char *protocol,
+					  const char *netid)
 {
 	struct sockaddr_in *addr = xs_addr_in(xprt);
 	char *buf;
@@ -299,21 +301,14 @@ static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt)
 	}
 	xprt->address_strings[RPC_DISPLAY_PORT] = buf;
 
-	buf = kzalloc(8, GFP_KERNEL);
-	if (buf) {
-		if (xprt->prot == IPPROTO_UDP)
-			snprintf(buf, 8, "udp");
-		else
-			snprintf(buf, 8, "tcp");
-	}
-	xprt->address_strings[RPC_DISPLAY_PROTO] = buf;
+	xprt->address_strings[RPC_DISPLAY_PROTO] = protocol;
 
 	buf = kzalloc(48, GFP_KERNEL);
 	if (buf) {
 		snprintf(buf, 48, "addr="NIPQUAD_FMT" port=%u proto=%s",
 			NIPQUAD(addr->sin_addr.s_addr),
 			ntohs(addr->sin_port),
-			xprt->prot == IPPROTO_UDP ? "udp" : "tcp");
+			protocol);
 	}
 	xprt->address_strings[RPC_DISPLAY_ALL] = buf;
 
@@ -340,12 +335,12 @@ static void xs_format_ipv4_peer_addresses(struct rpc_xprt *xprt)
 	}
 	xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR] = buf;
 
-	xprt->address_strings[RPC_DISPLAY_NETID] =
-		kstrdup(xprt->prot == IPPROTO_UDP ?
-			RPCBIND_NETID_UDP : RPCBIND_NETID_TCP, GFP_KERNEL);
+	xprt->address_strings[RPC_DISPLAY_NETID] = netid;
 }
 
-static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt)
+static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt,
+					  const char *protocol,
+					  const char *netid)
 {
 	struct sockaddr_in6 *addr = xs_addr_in6(xprt);
 	char *buf;
@@ -364,21 +359,14 @@ static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt)
 	}
 	xprt->address_strings[RPC_DISPLAY_PORT] = buf;
 
-	buf = kzalloc(8, GFP_KERNEL);
-	if (buf) {
-		if (xprt->prot == IPPROTO_UDP)
-			snprintf(buf, 8, "udp");
-		else
-			snprintf(buf, 8, "tcp");
-	}
-	xprt->address_strings[RPC_DISPLAY_PROTO] = buf;
+	xprt->address_strings[RPC_DISPLAY_PROTO] = protocol;
 
 	buf = kzalloc(64, GFP_KERNEL);
 	if (buf) {
 		snprintf(buf, 64, "addr="NIP6_FMT" port=%u proto=%s",
 				NIP6(addr->sin6_addr),
 				ntohs(addr->sin6_port),
-				xprt->prot == IPPROTO_UDP ? "udp" : "tcp");
+				protocol);
 	}
 	xprt->address_strings[RPC_DISPLAY_ALL] = buf;
 
@@ -405,17 +393,21 @@ static void xs_format_ipv6_peer_addresses(struct rpc_xprt *xprt)
 	}
 	xprt->address_strings[RPC_DISPLAY_UNIVERSAL_ADDR] = buf;
 
-	xprt->address_strings[RPC_DISPLAY_NETID] =
-		kstrdup(xprt->prot == IPPROTO_UDP ?
-			RPCBIND_NETID_UDP6 : RPCBIND_NETID_TCP6, GFP_KERNEL);
+	xprt->address_strings[RPC_DISPLAY_NETID] = netid;
 }
 
 static void xs_free_peer_addresses(struct rpc_xprt *xprt)
 {
-	int i;
+	unsigned int i;
 
 	for (i = 0; i < RPC_DISPLAY_MAX; i++)
-		kfree(xprt->address_strings[i]);
+		switch (i) {
+		case RPC_DISPLAY_PROTO:
+		case RPC_DISPLAY_NETID:
+			continue;
+		default:
+			kfree(xprt->address_strings[i]);
+		}
 }
 
 #define XS_SENDMSG_FLAGS	(MSG_DONTWAIT | MSG_NOSIGNAL)
@@ -614,6 +606,22 @@ static int xs_udp_send_request(struct rpc_task *task)
 	return status;
 }
 
+/**
+ * xs_tcp_shutdown - gracefully shut down a TCP socket
+ * @xprt: transport
+ *
+ * Initiates a graceful shutdown of the TCP socket by calling the
+ * equivalent of shutdown(SHUT_WR);
+ */
+static void xs_tcp_shutdown(struct rpc_xprt *xprt)
+{
+	struct sock_xprt *transport = container_of(xprt, struct sock_xprt, xprt);
+	struct socket *sock = transport->sock;
+
+	if (sock != NULL)
+		kernel_sock_shutdown(sock, SHUT_WR);
+}
+
 static inline void xs_encode_tcp_record_marker(struct xdr_buf *buf)
 {
 	u32 reclen = buf->len - sizeof(rpc_fraghdr);
@@ -691,7 +699,7 @@ static int xs_tcp_send_request(struct rpc_task *task)
 	default:
 		dprintk("RPC:       sendmsg returned unrecognized error %d\n",
 			-status);
-		xprt_disconnect(xprt);
+		xs_tcp_shutdown(xprt);
 		break;
 	}
 
@@ -759,7 +767,9 @@ static void xs_close(struct rpc_xprt *xprt)
 clear_close_wait:
 	smp_mb__before_clear_bit();
 	clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
+	clear_bit(XPRT_CLOSING, &xprt->state);
 	smp_mb__after_clear_bit();
+	xprt_disconnect_done(xprt);
 }
 
 /**
@@ -775,7 +785,6 @@ static void xs_destroy(struct rpc_xprt *xprt)
 
 	cancel_rearming_delayed_work(&transport->connect_worker);
 
-	xprt_disconnect(xprt);
 	xs_close(xprt);
 	xs_free_peer_addresses(xprt);
 	kfree(xprt->slot);
@@ -886,7 +895,7 @@ static inline void xs_tcp_read_fraghdr(struct rpc_xprt *xprt, struct xdr_skb_rea
 	/* Sanity check of the record length */
 	if (unlikely(transport->tcp_reclen < 4)) {
 		dprintk("RPC:       invalid TCP record fragment length\n");
-		xprt_disconnect(xprt);
+		xprt_force_disconnect(xprt);
 		return;
 	}
 	dprintk("RPC:       reading TCP record fragment of length %d\n",
@@ -1113,21 +1122,44 @@ static void xs_tcp_state_change(struct sock *sk)
 			transport->tcp_flags =
 				TCP_RCV_COPY_FRAGHDR | TCP_RCV_COPY_XID;
 
-			xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
 			xprt_wake_pending_tasks(xprt, 0);
 		}
 		spin_unlock_bh(&xprt->transport_lock);
 		break;
-	case TCP_SYN_SENT:
-	case TCP_SYN_RECV:
+	case TCP_FIN_WAIT1:
+		/* The client initiated a shutdown of the socket */
+		xprt->reestablish_timeout = 0;
+		set_bit(XPRT_CLOSING, &xprt->state);
+		smp_mb__before_clear_bit();
+		clear_bit(XPRT_CONNECTED, &xprt->state);
+		clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
+		smp_mb__after_clear_bit();
 		break;
 	case TCP_CLOSE_WAIT:
-		/* Try to schedule an autoclose RPC calls */
-		set_bit(XPRT_CLOSE_WAIT, &xprt->state);
-		if (test_and_set_bit(XPRT_LOCKED, &xprt->state) == 0)
-			queue_work(rpciod_workqueue, &xprt->task_cleanup);
-	default:
-		xprt_disconnect(xprt);
+		/* The server initiated a shutdown of the socket */
+		set_bit(XPRT_CLOSING, &xprt->state);
+		xprt_force_disconnect(xprt);
+	case TCP_SYN_SENT:
+	case TCP_CLOSING:
+		/*
+		 * If the server closed down the connection, make sure that
+		 * we back off before reconnecting
+		 */
+		if (xprt->reestablish_timeout < XS_TCP_INIT_REEST_TO)
+			xprt->reestablish_timeout = XS_TCP_INIT_REEST_TO;
+		break;
+	case TCP_LAST_ACK:
+		smp_mb__before_clear_bit();
+		clear_bit(XPRT_CONNECTED, &xprt->state);
+		smp_mb__after_clear_bit();
+		break;
+	case TCP_CLOSE:
+		smp_mb__before_clear_bit();
+		clear_bit(XPRT_CLOSE_WAIT, &xprt->state);
+		clear_bit(XPRT_CLOSING, &xprt->state);
+		smp_mb__after_clear_bit();
+		/* Mark transport as closed and wake up all pending tasks */
+		xprt_disconnect_done(xprt);
 	}
  out:
 	read_unlock(&sk->sk_callback_lock);
@@ -1279,34 +1311,53 @@ static void xs_set_port(struct rpc_xprt *xprt, unsigned short port)
 	}
 }
 
+static unsigned short xs_get_srcport(struct sock_xprt *transport, struct socket *sock)
+{
+	unsigned short port = transport->port;
+
+	if (port == 0 && transport->xprt.resvport)
+		port = xs_get_random_port();
+	return port;
+}
+
+static unsigned short xs_next_srcport(struct sock_xprt *transport, struct socket *sock, unsigned short port)
+{
+	if (transport->port != 0)
+		transport->port = 0;
+	if (!transport->xprt.resvport)
+		return 0;
+	if (port <= xprt_min_resvport || port > xprt_max_resvport)
+		return xprt_max_resvport;
+	return --port;
+}
+
 static int xs_bind4(struct sock_xprt *transport, struct socket *sock)
 {
 	struct sockaddr_in myaddr = {
 		.sin_family = AF_INET,
 	};
 	struct sockaddr_in *sa;
-	int err;
-	unsigned short port = transport->port;
+	int err, nloop = 0;
+	unsigned short port = xs_get_srcport(transport, sock);
+	unsigned short last;
 
-	if (!transport->xprt.resvport)
-		port = 0;
 	sa = (struct sockaddr_in *)&transport->addr;
 	myaddr.sin_addr = sa->sin_addr;
 	do {
 		myaddr.sin_port = htons(port);
 		err = kernel_bind(sock, (struct sockaddr *) &myaddr,
 						sizeof(myaddr));
-		if (!transport->xprt.resvport)
+		if (port == 0)
 			break;
 		if (err == 0) {
 			transport->port = port;
 			break;
 		}
-		if (port <= xprt_min_resvport)
-			port = xprt_max_resvport;
-		else
-			port--;
-	} while (err == -EADDRINUSE && port != transport->port);
+		last = port;
+		port = xs_next_srcport(transport, sock, port);
+		if (port > last)
+			nloop++;
+	} while (err == -EADDRINUSE && nloop != 2);
 	dprintk("RPC:       %s "NIPQUAD_FMT":%u: %s (%d)\n",
 			__FUNCTION__, NIPQUAD(myaddr.sin_addr),
 			port, err ? "failed" : "ok", err);
@@ -1319,28 +1370,27 @@ static int xs_bind6(struct sock_xprt *transport, struct socket *sock)
 		.sin6_family = AF_INET6,
 	};
 	struct sockaddr_in6 *sa;
-	int err;
-	unsigned short port = transport->port;
+	int err, nloop = 0;
+	unsigned short port = xs_get_srcport(transport, sock);
+	unsigned short last;
 
-	if (!transport->xprt.resvport)
-		port = 0;
 	sa = (struct sockaddr_in6 *)&transport->addr;
 	myaddr.sin6_addr = sa->sin6_addr;
 	do {
 		myaddr.sin6_port = htons(port);
 		err = kernel_bind(sock, (struct sockaddr *) &myaddr,
 						sizeof(myaddr));
-		if (!transport->xprt.resvport)
+		if (port == 0)
 			break;
 		if (err == 0) {
 			transport->port = port;
 			break;
 		}
-		if (port <= xprt_min_resvport)
-			port = xprt_max_resvport;
-		else
-			port--;
-	} while (err == -EADDRINUSE && port != transport->port);
+		last = port;
+		port = xs_next_srcport(transport, sock, port);
+		if (port > last)
+			nloop++;
+	} while (err == -EADDRINUSE && nloop != 2);
 	dprintk("RPC:       xs_bind6 "NIP6_FMT":%u: %s (%d)\n",
 		NIP6(myaddr.sin6_addr), port, err ? "failed" : "ok", err);
 	return err;
@@ -1602,8 +1652,7 @@ static void xs_tcp_connect_worker4(struct work_struct *work)
 				break;
 			default:
 				/* get rid of existing socket, and retry */
-				xs_close(xprt);
-				break;
+				xs_tcp_shutdown(xprt);
 		}
 	}
 out:
@@ -1662,8 +1711,7 @@ static void xs_tcp_connect_worker6(struct work_struct *work)
 				break;
 			default:
 				/* get rid of existing socket, and retry */
-				xs_close(xprt);
-				break;
+				xs_tcp_shutdown(xprt);
 		}
 	}
 out:
@@ -1710,6 +1758,19 @@ static void xs_connect(struct rpc_task *task)
 	}
 }
 
+static void xs_tcp_connect(struct rpc_task *task)
+{
+	struct rpc_xprt *xprt = task->tk_xprt;
+
+	/* Initiate graceful shutdown of the socket if not already done */
+	if (test_bit(XPRT_CONNECTED, &xprt->state))
+		xs_tcp_shutdown(xprt);
+	/* Exit if we need to wait for socket shutdown to complete */
+	if (test_bit(XPRT_CLOSING, &xprt->state))
+		return;
+	xs_connect(task);
+}
+
 /**
  * xs_udp_print_stats - display UDP socket-specifc stats
  * @xprt: rpc_xprt struct containing statistics
@@ -1780,12 +1841,12 @@ static struct rpc_xprt_ops xs_tcp_ops = {
 	.release_xprt		= xs_tcp_release_xprt,
 	.rpcbind		= rpcb_getport_async,
 	.set_port		= xs_set_port,
-	.connect		= xs_connect,
+	.connect		= xs_tcp_connect,
 	.buf_alloc		= rpc_malloc,
 	.buf_free		= rpc_free,
 	.send_request		= xs_tcp_send_request,
 	.set_retrans_timeout	= xprt_set_retrans_timeout_def,
-	.close			= xs_close,
+	.close			= xs_tcp_shutdown,
 	.destroy		= xs_destroy,
 	.print_stats		= xs_tcp_print_stats,
 };
@@ -1822,11 +1883,17 @@ static struct rpc_xprt *xs_setup_xprt(struct xprt_create *args,
 	xprt->addrlen = args->addrlen;
 	if (args->srcaddr)
 		memcpy(&new->addr, args->srcaddr, args->addrlen);
-	new->port = xs_get_random_port();
 
 	return xprt;
 }
 
+static const struct rpc_timeout xs_udp_default_timeout = {
+	.to_initval = 5 * HZ,
+	.to_maxval = 30 * HZ,
+	.to_increment = 5 * HZ,
+	.to_retries = 5,
+};
+
 /**
  * xs_setup_udp - Set up transport to use a UDP socket
  * @args: rpc transport creation arguments
@@ -1855,10 +1922,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
 
 	xprt->ops = &xs_udp_ops;
 
-	if (args->timeout)
-		xprt->timeout = *args->timeout;
-	else
-		xprt_set_timeout(&xprt->timeout, 5, 5 * HZ);
+	xprt->timeout = &xs_udp_default_timeout;
 
 	switch (addr->sa_family) {
 	case AF_INET:
@@ -1867,7 +1931,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
 
 		INIT_DELAYED_WORK(&transport->connect_worker,
 					xs_udp_connect_worker4);
-		xs_format_ipv4_peer_addresses(xprt);
+		xs_format_ipv4_peer_addresses(xprt, "udp", RPCBIND_NETID_UDP);
 		break;
 	case AF_INET6:
 		if (((struct sockaddr_in6 *)addr)->sin6_port != htons(0))
@@ -1875,7 +1939,7 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
 
 		INIT_DELAYED_WORK(&transport->connect_worker,
 					xs_udp_connect_worker6);
-		xs_format_ipv6_peer_addresses(xprt);
+		xs_format_ipv6_peer_addresses(xprt, "udp", RPCBIND_NETID_UDP6);
 		break;
 	default:
 		kfree(xprt);
@@ -1893,6 +1957,12 @@ static struct rpc_xprt *xs_setup_udp(struct xprt_create *args)
 	return ERR_PTR(-EINVAL);
 }
 
+static const struct rpc_timeout xs_tcp_default_timeout = {
+	.to_initval = 60 * HZ,
+	.to_maxval = 60 * HZ,
+	.to_retries = 2,
+};
+
 /**
  * xs_setup_tcp - Set up transport to use a TCP socket
  * @args: rpc transport creation arguments
@@ -1919,11 +1989,7 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
 	xprt->idle_timeout = XS_IDLE_DISC_TO;
 
 	xprt->ops = &xs_tcp_ops;
-
-	if (args->timeout)
-		xprt->timeout = *args->timeout;
-	else
-		xprt_set_timeout(&xprt->timeout, 2, 60 * HZ);
+	xprt->timeout = &xs_tcp_default_timeout;
 
 	switch (addr->sa_family) {
 	case AF_INET:
@@ -1931,14 +1997,14 @@ static struct rpc_xprt *xs_setup_tcp(struct xprt_create *args)
 			xprt_set_bound(xprt);
 
 		INIT_DELAYED_WORK(&transport->connect_worker, xs_tcp_connect_worker4);
-		xs_format_ipv4_peer_addresses(xprt);
+		xs_format_ipv4_peer_addresses(xprt, "tcp", RPCBIND_NETID_TCP);
 		break;
 	case AF_INET6:
 		if (((struct sockaddr_in6 *)addr)->sin6_port != htons(0))
 			xprt_set_bound(xprt);
 
 		INIT_DELAYED_WORK(&transport->connect_worker, xs_tcp_connect_worker6);
-		xs_format_ipv6_peer_addresses(xprt);
+		xs_format_ipv6_peer_addresses(xprt, "tcp", RPCBIND_NETID_TCP6);
 		break;
 	default:
 		kfree(xprt);