Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm:
  dlm: use more NOFS allocation
  dlm: connect to nodes earlier
  dlm: fix use count with multiple joins
  dlm: Make name input parameter of {,dlm_}new_lockspace() const

fs/dlm/dir.c

@@ -49,7 +49,8 @@ static struct dlm_direntry *get_free_de(struct dlm_ls *ls, int len)
 	spin_unlock(&ls->ls_recover_list_lock);
 
 	if (!found)
-		de = kzalloc(sizeof(struct dlm_direntry) + len, GFP_KERNEL);
+		de = kzalloc(sizeof(struct dlm_direntry) + len,
+			     ls->ls_allocation);
 	return de;
 }
 
@@ -211,7 +212,7 @@ int dlm_recover_directory(struct dlm_ls *ls)
 
 	dlm_dir_clear(ls);
 
-	last_name = kmalloc(DLM_RESNAME_MAXLEN, GFP_KERNEL);
+	last_name = kmalloc(DLM_RESNAME_MAXLEN, ls->ls_allocation);
 	if (!last_name)
 		goto out;
 
@@ -322,7 +323,7 @@ static int get_entry(struct dlm_ls *ls, int nodeid, char *name,
 	if (namelen > DLM_RESNAME_MAXLEN)
 		return -EINVAL;
 
-	de = kzalloc(sizeof(struct dlm_direntry) + namelen, GFP_KERNEL);
+	de = kzalloc(sizeof(struct dlm_direntry) + namelen, ls->ls_allocation);
 	if (!de)
 		return -ENOMEM;
 

fs/dlm/lockspace.c

@@ -384,7 +384,7 @@ static void threads_stop(void)
 	dlm_astd_stop();
 }
 
-static int new_lockspace(char *name, int namelen, void **lockspace,
+static int new_lockspace(const char *name, int namelen, void **lockspace,
 			 uint32_t flags, int lvblen)
 {
 	struct dlm_ls *ls;
@@ -419,16 +419,14 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
 			break;
 		}
 		ls->ls_create_count++;
-		module_put(THIS_MODULE);
-		error = 1; /* not an error, return 0 */
+		*lockspace = ls;
+		error = 1;
 		break;
 	}
 	spin_unlock(&lslist_lock);
 
-	if (error < 0)
-		goto out;
 	if (error)
-		goto ret_zero;
+		goto out;
 
 	error = -ENOMEM;
 
@@ -583,7 +581,6 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
 	dlm_create_debug_file(ls);
 
 	log_debug(ls, "join complete");
- ret_zero:
 	*lockspace = ls;
 	return 0;
 
@@ -614,7 +611,7 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
 	return error;
 }
 
-int dlm_new_lockspace(char *name, int namelen, void **lockspace,
+int dlm_new_lockspace(const char *name, int namelen, void **lockspace,
 		      uint32_t flags, int lvblen)
 {
 	int error = 0;
@@ -628,7 +625,9 @@ int dlm_new_lockspace(char *name, int namelen, void **lockspace,
 	error = new_lockspace(name, namelen, lockspace, flags, lvblen);
 	if (!error)
 		ls_count++;
-	else if (!ls_count)
+	if (error > 0)
+		error = 0;
+	if (!ls_count)
 		threads_stop();
  out:
 	mutex_unlock(&ls_lock);

fs/dlm/lowcomms.c

@@ -309,6 +309,20 @@ static void lowcomms_state_change(struct sock *sk)
 		lowcomms_write_space(sk);
 }
 
+int dlm_lowcomms_connect_node(int nodeid)
+{
+	struct connection *con;
+
+	if (nodeid == dlm_our_nodeid())
+		return 0;
+
+	con = nodeid2con(nodeid, GFP_NOFS);
+	if (!con)
+		return -ENOMEM;
+	lowcomms_connect_sock(con);
+	return 0;
+}
+
 /* Make a socket active */
 static int add_sock(struct socket *sock, struct connection *con)
 {
@@ -486,7 +500,7 @@ static void process_sctp_notification(struct connection *con,
 				return;
 			}
 
-			new_con = nodeid2con(nodeid, GFP_KERNEL);
+			new_con = nodeid2con(nodeid, GFP_NOFS);
 			if (!new_con)
 				return;
 
@@ -722,7 +736,7 @@ static int tcp_accept_from_sock(struct connection *con)
 	 *  the same time and the connections cross on the wire.
 	 *  In this case we store the incoming one in "othercon"
 	 */
-	newcon = nodeid2con(nodeid, GFP_KERNEL);
+	newcon = nodeid2con(nodeid, GFP_NOFS);
 	if (!newcon) {
 		result = -ENOMEM;
 		goto accept_err;
@@ -732,7 +746,7 @@ static int tcp_accept_from_sock(struct connection *con)
 		struct connection *othercon = newcon->othercon;
 
 		if (!othercon) {
-			othercon = kmem_cache_zalloc(con_cache, GFP_KERNEL);
+			othercon = kmem_cache_zalloc(con_cache, GFP_NOFS);
 			if (!othercon) {
 				log_print("failed to allocate incoming socket");
 				mutex_unlock(&newcon->sock_mutex);
@@ -1421,7 +1435,7 @@ static int work_start(void)
 static void stop_conn(struct connection *con)
 {
 	con->flags |= 0x0F;
-	if (con->sock)
+	if (con->sock && con->sock->sk)
 		con->sock->sk->sk_user_data = NULL;
 }
 

fs/dlm/lowcomms.h

@@ -2,7 +2,7 @@
 *******************************************************************************
 **
 **  Copyright (C) Sistina Software, Inc.  1997-2003  All rights reserved.
-**  Copyright (C) 2004-2005 Red Hat, Inc.  All rights reserved.
+**  Copyright (C) 2004-2009 Red Hat, Inc.  All rights reserved.
 **
 **  This copyrighted material is made available to anyone wishing to use,
 **  modify, copy, or redistribute it subject to the terms and conditions
@@ -19,6 +19,7 @@ void dlm_lowcomms_stop(void);
 int dlm_lowcomms_close(int nodeid);
 void *dlm_lowcomms_get_buffer(int nodeid, int len, gfp_t allocation, char **ppc);
 void dlm_lowcomms_commit_buffer(void *mh);
+int dlm_lowcomms_connect_node(int nodeid);
 
 #endif				/* __LOWCOMMS_DOT_H__ */
 

fs/dlm/member.c

@@ -1,7 +1,7 @@
 /******************************************************************************
 *******************************************************************************
 **
-**  Copyright (C) 2005-2008 Red Hat, Inc.  All rights reserved.
+**  Copyright (C) 2005-2009 Red Hat, Inc.  All rights reserved.
 **
 **  This copyrighted material is made available to anyone wishing to use,
 **  modify, copy, or redistribute it subject to the terms and conditions
@@ -17,6 +17,7 @@
 #include "recover.h"
 #include "rcom.h"
 #include "config.h"
+#include "lowcomms.h"
 
 static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)
 {
@@ -45,9 +46,9 @@ static void add_ordered_member(struct dlm_ls *ls, struct dlm_member *new)
 static int dlm_add_member(struct dlm_ls *ls, int nodeid)
 {
 	struct dlm_member *memb;
-	int w;
+	int w, error;
 
-	memb = kzalloc(sizeof(struct dlm_member), GFP_KERNEL);
+	memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
 	if (!memb)
 		return -ENOMEM;
 
@@ -57,6 +58,12 @@ static int dlm_add_member(struct dlm_ls *ls, int nodeid)
 		return w;
 	}
 
+	error = dlm_lowcomms_connect_node(nodeid);
+	if (error < 0) {
+		kfree(memb);
+		return error;
+	}
+
 	memb->nodeid = nodeid;
 	memb->weight = w;
 	add_ordered_member(ls, memb);
@@ -136,7 +143,7 @@ static void make_member_array(struct dlm_ls *ls)
 
 	ls->ls_total_weight = total;
 
-	array = kmalloc(sizeof(int) * total, GFP_KERNEL);
+	array = kmalloc(sizeof(int) * total, ls->ls_allocation);
 	if (!array)
 		return;
 
@@ -219,7 +226,7 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)
 			continue;
 		log_debug(ls, "new nodeid %d is a re-added member", rv->new[i]);
 
-		memb = kzalloc(sizeof(struct dlm_member), GFP_KERNEL);
+		memb = kzalloc(sizeof(struct dlm_member), ls->ls_allocation);
 		if (!memb)
 			return -ENOMEM;
 		memb->nodeid = rv->new[i];
@@ -334,7 +341,7 @@ int dlm_ls_start(struct dlm_ls *ls)
 	int *ids = NULL, *new = NULL;
 	int error, ids_count = 0, new_count = 0;
 
-	rv = kzalloc(sizeof(struct dlm_recover), GFP_KERNEL);
+	rv = kzalloc(sizeof(struct dlm_recover), ls->ls_allocation);
 	if (!rv)
 		return -ENOMEM;
 

fs/dlm/requestqueue.c

@@ -35,7 +35,7 @@ void dlm_add_requestqueue(struct dlm_ls *ls, int nodeid, struct dlm_message *ms)
 	struct rq_entry *e;
 	int length = ms->m_header.h_length - sizeof(struct dlm_message);
 
-	e = kmalloc(sizeof(struct rq_entry) + length, GFP_KERNEL);
+	e = kmalloc(sizeof(struct rq_entry) + length, ls->ls_allocation);
 	if (!e) {
 		log_print("dlm_add_requestqueue: out of memory len %d", length);
 		return;

include/linux/dlm.h

@@ -81,8 +81,8 @@ struct dlm_lksb {
  * the cluster, the calling node joins it.
  */
 
-int dlm_new_lockspace(char *name, int namelen, dlm_lockspace_t **lockspace,
-		      uint32_t flags, int lvblen);
+int dlm_new_lockspace(const char *name, int namelen,
+		      dlm_lockspace_t **lockspace, uint32_t flags, int lvblen);
 
 /*
  * dlm_release_lockspace