Merge branch 'master' of git://git.kernel.org/pub/scm/fs/xfs/xfs

fs/xfs/linux-2.6/xfs_ioctl.c

@@ -78,92 +78,74 @@ xfs_find_handle(
 	int			hsize;
 	xfs_handle_t		handle;
 	struct inode		*inode;
+	struct file		*file = NULL;
+	struct path		path;
+	int			error;
+	struct xfs_inode	*ip;
 
-	memset((char *)&handle, 0, sizeof(handle));
-
-	switch (cmd) {
-	case XFS_IOC_PATH_TO_FSHANDLE:
-	case XFS_IOC_PATH_TO_HANDLE: {
-		struct path path;
-		int error = user_lpath((const char __user *)hreq->path, &path);
+	if (cmd == XFS_IOC_FD_TO_HANDLE) {
+		file = fget(hreq->fd);
+		if (!file)
+			return -EBADF;
+		inode = file->f_path.dentry->d_inode;
+	} else {
+		error = user_lpath((const char __user *)hreq->path, &path);
 		if (error)
 			return error;
-
-		ASSERT(path.dentry);
-		ASSERT(path.dentry->d_inode);
-		inode = igrab(path.dentry->d_inode);
-		path_put(&path);
-		break;
+		inode = path.dentry->d_inode;
 	}
+	ip = XFS_I(inode);
 
-	case XFS_IOC_FD_TO_HANDLE: {
-		struct file	*file;
-
-		file = fget(hreq->fd);
-		if (!file)
-		    return -EBADF;
+	/*
+	 * We can only generate handles for inodes residing on a XFS filesystem,
+	 * and only for regular files, directories or symbolic links.
+	 */
+	error = -EINVAL;
+	if (inode->i_sb->s_magic != XFS_SB_MAGIC)
+		goto out_put;
 
-		ASSERT(file->f_path.dentry);
-		ASSERT(file->f_path.dentry->d_inode);
-		inode = igrab(file->f_path.dentry->d_inode);
-		fput(file);
-		break;
-	}
+	error = -EBADF;
+	if (!S_ISREG(inode->i_mode) &&
+	    !S_ISDIR(inode->i_mode) &&
+	    !S_ISLNK(inode->i_mode))
+		goto out_put;
 
-	default:
-		ASSERT(0);
-		return -XFS_ERROR(EINVAL);
-	}
 
-	if (inode->i_sb->s_magic != XFS_SB_MAGIC) {
-		/* we're not in XFS anymore, Toto */
-		iput(inode);
-		return -XFS_ERROR(EINVAL);
-	}
+	memcpy(&handle.ha_fsid, ip->i_mount->m_fixedfsid, sizeof(xfs_fsid_t));
 
-	switch (inode->i_mode & S_IFMT) {
-	case S_IFREG:
-	case S_IFDIR:
-	case S_IFLNK:
-		break;
-	default:
-		iput(inode);
-		return -XFS_ERROR(EBADF);
-	}
-
-	/* now we can grab the fsid */
-	memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid,
-			sizeof(xfs_fsid_t));
-	hsize = sizeof(xfs_fsid_t);
-
-	if (cmd != XFS_IOC_PATH_TO_FSHANDLE) {
-		xfs_inode_t	*ip = XFS_I(inode);
+	if (cmd == XFS_IOC_PATH_TO_FSHANDLE) {
+		/*
+		 * This handle only contains an fsid, zero the rest.
+		 */
+		memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
+		hsize = sizeof(xfs_fsid_t);
+	} else {
 		int		lock_mode;
 
-		/* need to get access to the xfs_inode to read the generation */
 		lock_mode = xfs_ilock_map_shared(ip);
-
-		/* fill in fid section of handle from inode */
 		handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
 					sizeof(handle.ha_fid.fid_len);
 		handle.ha_fid.fid_pad = 0;
 		handle.ha_fid.fid_gen = ip->i_d.di_gen;
 		handle.ha_fid.fid_ino = ip->i_ino;
-
 		xfs_iunlock_map_shared(ip, lock_mode);
 
 		hsize = XFS_HSIZE(handle);
 	}
 
-	/* now copy our handle into the user buffer & write out the size */
+	error = -EFAULT;
 	if (copy_to_user(hreq->ohandle, &handle, hsize) ||
-	    copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32))) {
-		iput(inode);
-		return -XFS_ERROR(EFAULT);
-	}
+	    copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
+		goto out_put;
 
-	iput(inode);
-	return 0;
+	error = 0;
+
+ out_put:
+	if (cmd == XFS_IOC_FD_TO_HANDLE)
+		fput(file);
+	else
+		path_put(&path);
+	return error;
 }
 
 /*

fs/xfs/linux-2.6/xfs_super.c

@@ -990,26 +990,57 @@ xfs_fs_write_inode(
 	int			sync)
 {
 	struct xfs_inode	*ip = XFS_I(inode);
+	struct xfs_mount	*mp = ip->i_mount;
 	int			error = 0;
-	int			flags = 0;
 
 	xfs_itrace_entry(ip);
+
+	if (XFS_FORCED_SHUTDOWN(mp))
+		return XFS_ERROR(EIO);
+
 	if (sync) {
 		error = xfs_wait_on_pages(ip, 0, -1);
 		if (error)
-			goto out_error;
-		flags |= FLUSH_SYNC;
+			goto out;
+	}
+
+	/*
+	 * Bypass inodes which have already been cleaned by
+	 * the inode flush clustering code inside xfs_iflush
+	 */
+	if (xfs_inode_clean(ip))
+		goto out;
+
+	/*
+	 * We make this non-blocking if the inode is contended, return
+	 * EAGAIN to indicate to the caller that they did not succeed.
+	 * This prevents the flush path from blocking on inodes inside
+	 * another operation right now, they get caught later by xfs_sync.
+	 */
+	if (sync) {
+		xfs_ilock(ip, XFS_ILOCK_SHARED);
+		xfs_iflock(ip);
+
+		error = xfs_iflush(ip, XFS_IFLUSH_SYNC);
+	} else {
+		error = EAGAIN;
+		if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED))
+			goto out;
+		if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip))
+			goto out_unlock;
+
+		error = xfs_iflush(ip, XFS_IFLUSH_ASYNC_NOBLOCK);
 	}
-	error = xfs_inode_flush(ip, flags);
 
-out_error:
+ out_unlock:
+	xfs_iunlock(ip, XFS_ILOCK_SHARED);
+ out:
 	/*
 	 * if we failed to write out the inode then mark
 	 * it dirty again so we'll try again later.
 	 */
 	if (error)
 		xfs_mark_inode_dirty_sync(ip);
-
 	return -error;
 }
 

fs/xfs/linux-2.6/xfs_vnode.h

@@ -40,11 +40,6 @@ struct attrlist_cursor_kern;
 #define IO_ISDIRECT	0x00004		/* bypass page cache */
 #define IO_INVIS	0x00020		/* don't update inode timestamps */
 
-/*
- * Flags for xfs_inode_flush
- */
-#define FLUSH_SYNC		1	/* wait for flush to complete	*/
-
 /*
  * Flush/Invalidate options for vop_toss/flush/flushinval_pages.
  */

fs/xfs/quota/xfs_qm.c

@@ -632,7 +632,6 @@ xfs_qm_dqattach_one(
 	xfs_dqid_t	id,
 	uint		type,
 	uint		doalloc,
-	uint		dolock,
 	xfs_dquot_t	*udqhint, /* hint */
 	xfs_dquot_t	**IO_idqpp)
 {
@@ -641,16 +640,16 @@ xfs_qm_dqattach_one(
 
 	ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
 	error = 0;
+
 	/*
 	 * See if we already have it in the inode itself. IO_idqpp is
 	 * &i_udquot or &i_gdquot. This made the code look weird, but
 	 * made the logic a lot simpler.
 	 */
-	if ((dqp = *IO_idqpp)) {
-		if (dolock)
-			xfs_dqlock(dqp);
+	dqp = *IO_idqpp;
+	if (dqp) {
 		xfs_dqtrace_entry(dqp, "DQATTACH: found in ip");
-		goto done;
+		return 0;
 	}
 
 	/*
@@ -659,38 +658,38 @@ xfs_qm_dqattach_one(
 	 * lookup by dqid (xfs_qm_dqget) by caching a group dquot inside
 	 * the user dquot.
 	 */
-	ASSERT(!udqhint || type == XFS_DQ_GROUP || type == XFS_DQ_PROJ);
-	if (udqhint && !dolock)
+	if (udqhint) {
+		ASSERT(type == XFS_DQ_GROUP || type == XFS_DQ_PROJ);
 		xfs_dqlock(udqhint);
 
-	/*
-	 * No need to take dqlock to look at the id.
-	 * The ID can't change until it gets reclaimed, and it won't
-	 * be reclaimed as long as we have a ref from inode and we hold
-	 * the ilock.
-	 */
-	if (udqhint &&
-	    (dqp = udqhint->q_gdquot) &&
-	    (be32_to_cpu(dqp->q_core.d_id) == id)) {
-		ASSERT(XFS_DQ_IS_LOCKED(udqhint));
-		xfs_dqlock(dqp);
-		XFS_DQHOLD(dqp);
-		ASSERT(*IO_idqpp == NULL);
-		*IO_idqpp = dqp;
-		if (!dolock) {
+		/*
+		 * No need to take dqlock to look at the id.
+		 *
+		 * The ID can't change until it gets reclaimed, and it won't
+		 * be reclaimed as long as we have a ref from inode and we
+		 * hold the ilock.
+		 */
+		dqp = udqhint->q_gdquot;
+		if (dqp && be32_to_cpu(dqp->q_core.d_id) == id) {
+			xfs_dqlock(dqp);
+			XFS_DQHOLD(dqp);
+			ASSERT(*IO_idqpp == NULL);
+			*IO_idqpp = dqp;
+
 			xfs_dqunlock(dqp);
 			xfs_dqunlock(udqhint);
+			return 0;
 		}
-		goto done;
-	}
-	/*
-	 * We can't hold a dquot lock when we call the dqget code.
-	 * We'll deadlock in no time, because of (not conforming to)
-	 * lock ordering - the inodelock comes before any dquot lock,
-	 * and we may drop and reacquire the ilock in xfs_qm_dqget().
-	 */
-	if (udqhint)
+
+		/*
+		 * We can't hold a dquot lock when we call the dqget code.
+		 * We'll deadlock in no time, because of (not conforming to)
+		 * lock ordering - the inodelock comes before any dquot lock,
+		 * and we may drop and reacquire the ilock in xfs_qm_dqget().
+		 */
 		xfs_dqunlock(udqhint);
+	}
+
 	/*
 	 * Find the dquot from somewhere. This bumps the
 	 * reference count of dquot and returns it locked.
@@ -698,48 +697,19 @@ xfs_qm_dqattach_one(
 	 * disk and we didn't ask it to allocate;
 	 * ESRCH if quotas got turned off suddenly.
 	 */
-	if ((error = xfs_qm_dqget(ip->i_mount, ip, id, type,
-				 doalloc|XFS_QMOPT_DOWARN, &dqp))) {
-		if (udqhint && dolock)
-			xfs_dqlock(udqhint);
-		goto done;
-	}
+	error = xfs_qm_dqget(ip->i_mount, ip, id, type, XFS_QMOPT_DOWARN, &dqp);
+	if (error)
+		return error;
 
 	xfs_dqtrace_entry(dqp, "DQATTACH: found by dqget");
+
 	/*
 	 * dqget may have dropped and re-acquired the ilock, but it guarantees
 	 * that the dquot returned is the one that should go in the inode.
 	 */
 	*IO_idqpp = dqp;
-	ASSERT(dqp);
-	ASSERT(XFS_DQ_IS_LOCKED(dqp));
-	if (! dolock) {
-		xfs_dqunlock(dqp);
-		goto done;
-	}
-	if (! udqhint)
-		goto done;
-
-	ASSERT(udqhint);
-	ASSERT(dolock);
-	ASSERT(XFS_DQ_IS_LOCKED(dqp));
-	if (! xfs_qm_dqlock_nowait(udqhint)) {
-		xfs_dqunlock(dqp);
-		xfs_dqlock(udqhint);
-		xfs_dqlock(dqp);
-	}
-      done:
-#ifdef QUOTADEBUG
-	if (udqhint) {
-		if (dolock)
-			ASSERT(XFS_DQ_IS_LOCKED(udqhint));
-	}
-	if (! error) {
-		if (dolock)
-			ASSERT(XFS_DQ_IS_LOCKED(dqp));
-	}
-#endif
-	return error;
+	xfs_dqunlock(dqp);
+	return 0;
 }
 
 
@@ -754,24 +724,15 @@ xfs_qm_dqattach_one(
 STATIC void
 xfs_qm_dqattach_grouphint(
 	xfs_dquot_t	*udq,
-	xfs_dquot_t	*gdq,
-	uint		locked)
+	xfs_dquot_t	*gdq)
 {
 	xfs_dquot_t	*tmp;
 
-#ifdef QUOTADEBUG
-	if (locked) {
-		ASSERT(XFS_DQ_IS_LOCKED(udq));
-		ASSERT(XFS_DQ_IS_LOCKED(gdq));
-	}
-#endif
-	if (! locked)
-		xfs_dqlock(udq);
+	xfs_dqlock(udq);
 
 	if ((tmp = udq->q_gdquot)) {
 		if (tmp == gdq) {
-			if (! locked)
-				xfs_dqunlock(udq);
+			xfs_dqunlock(udq);
 			return;
 		}
 
@@ -781,8 +742,6 @@ xfs_qm_dqattach_grouphint(
 		 * because the freelist lock comes before dqlocks.
 		 */
 		xfs_dqunlock(udq);
-		if (locked)
-			xfs_dqunlock(gdq);
 		/*
 		 * we took a hard reference once upon a time in dqget,
 		 * so give it back when the udquot no longer points at it
@@ -795,9 +754,7 @@ xfs_qm_dqattach_grouphint(
 
 	} else {
 		ASSERT(XFS_DQ_IS_LOCKED(udq));
-		if (! locked) {
-			xfs_dqlock(gdq);
-		}
+		xfs_dqlock(gdq);
 	}
 
 	ASSERT(XFS_DQ_IS_LOCKED(udq));
@@ -810,10 +767,9 @@ xfs_qm_dqattach_grouphint(
 		XFS_DQHOLD(gdq);
 		udq->q_gdquot = gdq;
 	}
-	if (! locked) {
-		xfs_dqunlock(gdq);
-		xfs_dqunlock(udq);
-	}
+
+	xfs_dqunlock(gdq);
+	xfs_dqunlock(udq);
 }
 
 
@@ -821,8 +777,6 @@ xfs_qm_dqattach_grouphint(
  * Given a locked inode, attach dquot(s) to it, taking U/G/P-QUOTAON
  * into account.
  * If XFS_QMOPT_DQALLOC, the dquot(s) will be allocated if needed.
- * If XFS_QMOPT_DQLOCK, the dquot(s) will be returned locked. This option pretty
- * much made this code a complete mess, but it has been pretty useful.
  * If XFS_QMOPT_ILOCKED, then inode sent is already locked EXCL.
  * Inode may get unlocked and relocked in here, and the caller must deal with
  * the consequences.
@@ -851,7 +805,6 @@ xfs_qm_dqattach(
 	if (XFS_IS_UQUOTA_ON(mp)) {
 		error = xfs_qm_dqattach_one(ip, ip->i_d.di_uid, XFS_DQ_USER,
 						flags & XFS_QMOPT_DQALLOC,
-						flags & XFS_QMOPT_DQLOCK,
 						NULL, &ip->i_udquot);
 		if (error)
 			goto done;
@@ -863,11 +816,9 @@ xfs_qm_dqattach(
 		error = XFS_IS_GQUOTA_ON(mp) ?
 			xfs_qm_dqattach_one(ip, ip->i_d.di_gid, XFS_DQ_GROUP,
 						flags & XFS_QMOPT_DQALLOC,
-						flags & XFS_QMOPT_DQLOCK,
 						ip->i_udquot, &ip->i_gdquot) :
 			xfs_qm_dqattach_one(ip, ip->i_d.di_projid, XFS_DQ_PROJ,
 						flags & XFS_QMOPT_DQALLOC,
-						flags & XFS_QMOPT_DQLOCK,
 						ip->i_udquot, &ip->i_gdquot);
 		/*
 		 * Don't worry about the udquot that we may have
@@ -898,22 +849,13 @@ xfs_qm_dqattach(
 		/*
 		 * Attach i_gdquot to the gdquot hint inside the i_udquot.
 		 */
-		xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot,
-					 flags & XFS_QMOPT_DQLOCK);
+		xfs_qm_dqattach_grouphint(ip->i_udquot, ip->i_gdquot);
 	}
 
       done:
 
 #ifdef QUOTADEBUG
 	if (! error) {
-		if (ip->i_udquot) {
-			if (flags & XFS_QMOPT_DQLOCK)
-				ASSERT(XFS_DQ_IS_LOCKED(ip->i_udquot));
-		}
-		if (ip->i_gdquot) {
-			if (flags & XFS_QMOPT_DQLOCK)
-				ASSERT(XFS_DQ_IS_LOCKED(ip->i_gdquot));
-		}
 		if (XFS_IS_UQUOTA_ON(mp))
 			ASSERT(ip->i_udquot);
 		if (XFS_IS_OQUOTA_ON(mp))

fs/xfs/quota/xfs_trans_dquot.c

@@ -624,10 +624,9 @@ xfs_trans_dqresv(
 	xfs_qcnt_t	*resbcountp;
 	xfs_quotainfo_t	*q = mp->m_quotainfo;
 
-	if (! (flags & XFS_QMOPT_DQLOCK)) {
-		xfs_dqlock(dqp);
-	}
-	ASSERT(XFS_DQ_IS_LOCKED(dqp));
+
+	xfs_dqlock(dqp);
+
 	if (flags & XFS_TRANS_DQ_RES_BLKS) {
 		hardlimit = be64_to_cpu(dqp->q_core.d_blk_hardlimit);
 		if (!hardlimit)
@@ -740,10 +739,8 @@ xfs_trans_dqresv(
 	ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount));
 
 error_return:
-	if (! (flags & XFS_QMOPT_DQLOCK)) {
-		xfs_dqunlock(dqp);
-	}
-	return (error);
+	xfs_dqunlock(dqp);
+	return error;
 }
 
 
@@ -753,8 +750,7 @@ error_return:
  * grp/prj quotas is important, because this follows a both-or-nothing
  * approach.
  *
- * flags = XFS_QMOPT_DQLOCK indicate if dquot(s) need to be locked.
- *	   XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
+ * flags = XFS_QMOPT_FORCE_RES evades limit enforcement. Used by chown.
  *	   XFS_QMOPT_ENOSPC returns ENOSPC not EDQUOT.  Used by pquota.
  *	   XFS_TRANS_DQ_RES_BLKS reserves regular disk blocks
  *	   XFS_TRANS_DQ_RES_RTBLKS reserves realtime disk blocks

fs/xfs/xfs_attr_leaf.c

@@ -297,6 +297,26 @@ xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
 	xfs_sbversion_add_attr2(mp, args->trans);
 }
 
+/*
+ * After the last attribute is removed revert to original inode format,
+ * making all literal area available to the data fork once more.
+ */
+STATIC void
+xfs_attr_fork_reset(
+	struct xfs_inode	*ip,
+	struct xfs_trans	*tp)
+{
+	xfs_idestroy_fork(ip, XFS_ATTR_FORK);
+	ip->i_d.di_forkoff = 0;
+	ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
+
+	ASSERT(ip->i_d.di_anextents == 0);
+	ASSERT(ip->i_afp == NULL);
+
+	ip->i_df.if_ext_max = XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t);
+	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+}
+
 /*
  * Remove an attribute from the shortform attribute list structure.
  */
@@ -344,22 +364,10 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
 	 */
 	totsize -= size;
 	if (totsize == sizeof(xfs_attr_sf_hdr_t) &&
-				!(args->op_flags & XFS_DA_OP_ADDNAME) &&
-				(mp->m_flags & XFS_MOUNT_ATTR2) &&
-				(dp->i_d.di_format != XFS_DINODE_FMT_BTREE)) {
-		/*
-		 * Last attribute now removed, revert to original
-		 * inode format making all literal area available
-		 * to the data fork once more.
-		 */
-		xfs_idestroy_fork(dp, XFS_ATTR_FORK);
-		dp->i_d.di_forkoff = 0;
-		dp->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
-		ASSERT(dp->i_d.di_anextents == 0);
-		ASSERT(dp->i_afp == NULL);
-		dp->i_df.if_ext_max =
-			XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
-		xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
+	    (mp->m_flags & XFS_MOUNT_ATTR2) &&
+	    (dp->i_d.di_format != XFS_DINODE_FMT_BTREE) &&
+	    !(args->op_flags & XFS_DA_OP_ADDNAME)) {
+		xfs_attr_fork_reset(dp, args->trans);
 	} else {
 		xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
 		dp->i_d.di_forkoff = xfs_attr_shortform_bytesfit(dp, totsize);
@@ -786,20 +794,7 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args, int forkoff)
 	if (forkoff == -1) {
 		ASSERT(dp->i_mount->m_flags & XFS_MOUNT_ATTR2);
 		ASSERT(dp->i_d.di_format != XFS_DINODE_FMT_BTREE);
-
-		/*
-		 * Last attribute was removed, revert to original
-		 * inode format making all literal area available
-		 * to the data fork once more.
-		 */
-		xfs_idestroy_fork(dp, XFS_ATTR_FORK);
-		dp->i_d.di_forkoff = 0;
-		dp->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
-		ASSERT(dp->i_d.di_anextents == 0);
-		ASSERT(dp->i_afp == NULL);
-		dp->i_df.if_ext_max =
-			XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
-		xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
+		xfs_attr_fork_reset(dp, args->trans);
 		goto out;
 	}
 

fs/xfs/xfs_dfrag.c

@@ -118,19 +118,17 @@ xfs_swap_extents(
 	xfs_bstat_t	*sbp = &sxp->sx_stat;
 	xfs_ifork_t	*tempifp, *ifp, *tifp;
 	int		ilf_fields, tilf_fields;
-	static uint	lock_flags = XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL;
 	int		error = 0;
 	int		aforkblks = 0;
 	int		taforkblks = 0;
 	__uint64_t	tmp;
-	char		locked = 0;
 
 	mp = ip->i_mount;
 
 	tempifp = kmem_alloc(sizeof(xfs_ifork_t), KM_MAYFAIL);
 	if (!tempifp) {
 		error = XFS_ERROR(ENOMEM);
-		goto error0;
+		goto out;
 	}
 
 	sbp = &sxp->sx_stat;
@@ -143,25 +141,24 @@ xfs_swap_extents(
 	 */
 	xfs_lock_two_inodes(ip, tip, XFS_IOLOCK_EXCL);
 	xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL);
-	locked = 1;
 
 	/* Verify that both files have the same format */
 	if ((ip->i_d.di_mode & S_IFMT) != (tip->i_d.di_mode & S_IFMT)) {
 		error = XFS_ERROR(EINVAL);
-		goto error0;
+		goto out_unlock;
 	}
 
 	/* Verify both files are either real-time or non-realtime */
 	if (XFS_IS_REALTIME_INODE(ip) != XFS_IS_REALTIME_INODE(tip)) {
 		error = XFS_ERROR(EINVAL);
-		goto error0;
+		goto out_unlock;
 	}
 
 	/* Should never get a local format */
 	if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL ||
 	    tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
 		error = XFS_ERROR(EINVAL);
-		goto error0;
+		goto out_unlock;
 	}
 
 	if (VN_CACHED(VFS_I(tip)) != 0) {
@@ -169,13 +166,13 @@ xfs_swap_extents(
 		error = xfs_flushinval_pages(tip, 0, -1,
 				FI_REMAPF_LOCKED);
 		if (error)
-			goto error0;
+			goto out_unlock;
 	}
 
 	/* Verify O_DIRECT for ftmp */
 	if (VN_CACHED(VFS_I(tip)) != 0) {
 		error = XFS_ERROR(EINVAL);
-		goto error0;
+		goto out_unlock;
 	}
 
 	/* Verify all data are being swapped */
@@ -183,7 +180,7 @@ xfs_swap_extents(
 	    sxp->sx_length != ip->i_d.di_size ||
 	    sxp->sx_length != tip->i_d.di_size) {
 		error = XFS_ERROR(EFAULT);
-		goto error0;
+		goto out_unlock;
 	}
 
 	/*
@@ -193,7 +190,7 @@ xfs_swap_extents(
 	 */
 	if ( XFS_IFORK_Q(ip) != XFS_IFORK_Q(tip) ) {
 		error = XFS_ERROR(EINVAL);
-		goto error0;
+		goto out_unlock;
 	}
 
 	/*
@@ -208,7 +205,7 @@ xfs_swap_extents(
 	    (sbp->bs_mtime.tv_sec != ip->i_d.di_mtime.t_sec) ||
 	    (sbp->bs_mtime.tv_nsec != ip->i_d.di_mtime.t_nsec)) {
 		error = XFS_ERROR(EBUSY);
-		goto error0;
+		goto out_unlock;
 	}
 
 	/* We need to fail if the file is memory mapped.  Once we have tossed
@@ -219,7 +216,7 @@ xfs_swap_extents(
 	 */
 	if (VN_MAPPED(VFS_I(ip))) {
 		error = XFS_ERROR(EBUSY);
-		goto error0;
+		goto out_unlock;
 	}
 
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
@@ -242,8 +239,7 @@ xfs_swap_extents(
 		xfs_iunlock(ip,  XFS_IOLOCK_EXCL);
 		xfs_iunlock(tip, XFS_IOLOCK_EXCL);
 		xfs_trans_cancel(tp, 0);
-		locked = 0;
-		goto error0;
+		goto out;
 	}
 	xfs_lock_two_inodes(ip, tip, XFS_ILOCK_EXCL);
 
@@ -253,19 +249,15 @@ xfs_swap_extents(
 	if ( ((XFS_IFORK_Q(ip) != 0) && (ip->i_d.di_anextents > 0)) &&
 	     (ip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) {
 		error = xfs_bmap_count_blocks(tp, ip, XFS_ATTR_FORK, &aforkblks);
-		if (error) {
-			xfs_trans_cancel(tp, 0);
-			goto error0;
-		}
+		if (error)
+			goto out_trans_cancel;
 	}
 	if ( ((XFS_IFORK_Q(tip) != 0) && (tip->i_d.di_anextents > 0)) &&
 	     (tip->i_d.di_aformat != XFS_DINODE_FMT_LOCAL)) {
 		error = xfs_bmap_count_blocks(tp, tip, XFS_ATTR_FORK,
 			&taforkblks);
-		if (error) {
-			xfs_trans_cancel(tp, 0);
-			goto error0;
-		}
+		if (error)
+			goto out_trans_cancel;
 	}
 
 	/*
@@ -332,10 +324,10 @@ xfs_swap_extents(
 
 
 	IHOLD(ip);
-	xfs_trans_ijoin(tp, ip, lock_flags);
+	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
 
 	IHOLD(tip);
-	xfs_trans_ijoin(tp, tip, lock_flags);
+	xfs_trans_ijoin(tp, tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
 
 	xfs_trans_log_inode(tp, ip,  ilf_fields);
 	xfs_trans_log_inode(tp, tip, tilf_fields);
@@ -344,19 +336,19 @@ xfs_swap_extents(
 	 * If this is a synchronous mount, make sure that the
 	 * transaction goes to disk before returning to the user.
 	 */
-	if (mp->m_flags & XFS_MOUNT_WSYNC) {
+	if (mp->m_flags & XFS_MOUNT_WSYNC)
 		xfs_trans_set_sync(tp);
-	}
 
 	error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT);
-	locked = 0;
 
- error0:
-	if (locked) {
-		xfs_iunlock(ip,  lock_flags);
-		xfs_iunlock(tip, lock_flags);
-	}
-	if (tempifp != NULL)
-		kmem_free(tempifp);
+out_unlock:
+	xfs_iunlock(ip,  XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
+	xfs_iunlock(tip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
+out:
+	kmem_free(tempifp);
 	return error;
+
+out_trans_cancel:
+	xfs_trans_cancel(tp, 0);
+	goto out_unlock;
 }

fs/xfs/xfs_mount.c

@@ -886,8 +886,6 @@ xfs_check_sizes(xfs_mount_t *mp)
 }
 
 /*
- * xfs_mountfs
- *
  * This function does the following on an initial mount of a file system:
  *	- reads the superblock from disk and init the mount struct
  *	- if we're a 32-bit kernel, do a size check on the superblock
@@ -905,7 +903,6 @@ xfs_mountfs(
 	xfs_inode_t	*rip;
 	__uint64_t	resblks;
 	uint		quotamount, quotaflags;
-	int		uuid_mounted = 0;
 	int		error = 0;
 
 	xfs_mount_common(mp, sbp);
@@ -960,7 +957,7 @@ xfs_mountfs(
 	 */
 	error = xfs_update_alignment(mp);
 	if (error)
-		goto error1;
+		goto out;
 
 	xfs_alloc_compute_maxlevels(mp);
 	xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK);
@@ -977,12 +974,11 @@ xfs_mountfs(
 	 * since a single partition filesystem is identical to a single
 	 * partition volume/filesystem.
 	 */
-	if ((mp->m_flags & XFS_MOUNT_NOUUID) == 0) {
+	if (!(mp->m_flags & XFS_MOUNT_NOUUID)) {
 		if (xfs_uuid_mount(mp)) {
 			error = XFS_ERROR(EINVAL);
-			goto error1;
+			goto out;
 		}
-		uuid_mounted=1;
 	}
 
 	/*
@@ -1007,7 +1003,7 @@ xfs_mountfs(
 	 */
 	error = xfs_check_sizes(mp);
 	if (error)
-		goto error1;
+		goto out_remove_uuid;
 
 	/*
 	 * Initialize realtime fields in the mount structure
@@ -1015,7 +1011,7 @@ xfs_mountfs(
 	error = xfs_rtmount_init(mp);
 	if (error) {
 		cmn_err(CE_WARN, "XFS: RT mount failed");
-		goto error1;
+		goto out_remove_uuid;
 	}
 
 	/*
@@ -1045,26 +1041,26 @@ xfs_mountfs(
 	mp->m_perag = kmem_zalloc(sbp->sb_agcount * sizeof(xfs_perag_t),
 				  KM_MAYFAIL);
 	if (!mp->m_perag)
-		goto error1;
+		goto out_remove_uuid;
 
 	mp->m_maxagi = xfs_initialize_perag(mp, sbp->sb_agcount);
 
+	if (!sbp->sb_logblocks) {
+		cmn_err(CE_WARN, "XFS: no log defined");
+		XFS_ERROR_REPORT("xfs_mountfs", XFS_ERRLEVEL_LOW, mp);
+		error = XFS_ERROR(EFSCORRUPTED);
+		goto out_free_perag;
+	}
+
 	/*
 	 * log's mount-time initialization. Perform 1st part recovery if needed
 	 */
-	if (likely(sbp->sb_logblocks > 0)) {	/* check for volume case */
-		error = xfs_log_mount(mp, mp->m_logdev_targp,
-				      XFS_FSB_TO_DADDR(mp, sbp->sb_logstart),
-				      XFS_FSB_TO_BB(mp, sbp->sb_logblocks));
-		if (error) {
-			cmn_err(CE_WARN, "XFS: log mount failed");
-			goto error2;
-		}
-	} else {	/* No log has been defined */
-		cmn_err(CE_WARN, "XFS: no log defined");
-		XFS_ERROR_REPORT("xfs_mountfs_int(1)", XFS_ERRLEVEL_LOW, mp);
-		error = XFS_ERROR(EFSCORRUPTED);
-		goto error2;
+	error = xfs_log_mount(mp, mp->m_logdev_targp,
+			      XFS_FSB_TO_DADDR(mp, sbp->sb_logstart),
+			      XFS_FSB_TO_BB(mp, sbp->sb_logblocks));
+	if (error) {
+		cmn_err(CE_WARN, "XFS: log mount failed");
+		goto out_free_perag;
 	}
 
 	/*
@@ -1086,15 +1082,14 @@ xfs_mountfs(
 	 * If we are currently making the filesystem, the initialisation will
 	 * fail as the perag data is in an undefined state.
 	 */
-
 	if (xfs_sb_version_haslazysbcount(&mp->m_sb) &&
 	    !XFS_LAST_UNMOUNT_WAS_CLEAN(mp) &&
 	     !mp->m_sb.sb_inprogress) {
 		error = xfs_initialize_perag_data(mp, sbp->sb_agcount);
-		if (error) {
-			goto error2;
-		}
+		if (error)
+			goto out_free_perag;
 	}
+
 	/*
 	 * Get and sanity-check the root inode.
 	 * Save the pointer to it in the mount structure.
@@ -1102,7 +1097,7 @@ xfs_mountfs(
 	error = xfs_iget(mp, NULL, sbp->sb_rootino, 0, XFS_ILOCK_EXCL, &rip, 0);
 	if (error) {
 		cmn_err(CE_WARN, "XFS: failed to read root inode");
-		goto error3;
+		goto out_log_dealloc;
 	}
 
 	ASSERT(rip != NULL);
@@ -1116,7 +1111,7 @@ xfs_mountfs(
 		XFS_ERROR_REPORT("xfs_mountfs_int(2)", XFS_ERRLEVEL_LOW,
 				 mp);
 		error = XFS_ERROR(EFSCORRUPTED);
-		goto error4;
+		goto out_rele_rip;
 	}
 	mp->m_rootip = rip;	/* save it */
 
@@ -1131,7 +1126,7 @@ xfs_mountfs(
 		 * Free up the root inode.
 		 */
 		cmn_err(CE_WARN, "XFS: failed to read RT inodes");
-		goto error4;
+		goto out_rele_rip;
 	}
 
 	/*
@@ -1143,7 +1138,7 @@ xfs_mountfs(
 		error = xfs_mount_log_sb(mp, mp->m_update_flags);
 		if (error) {
 			cmn_err(CE_WARN, "XFS: failed to write sb changes");
-			goto error4;
+			goto out_rtunmount;
 		}
 	}
 
@@ -1152,7 +1147,7 @@ xfs_mountfs(
 	 */
 	error = XFS_QM_INIT(mp, &quotamount, &quotaflags);
 	if (error)
-		goto error4;
+		goto out_rtunmount;
 
 	/*
 	 * Finish recovering the file system.  This part needed to be
@@ -1162,7 +1157,7 @@ xfs_mountfs(
 	error = xfs_log_mount_finish(mp);
 	if (error) {
 		cmn_err(CE_WARN, "XFS: log mount finish failed");
-		goto error4;
+		goto out_rtunmount;
 	}
 
 	/*
@@ -1170,7 +1165,7 @@ xfs_mountfs(
 	 */
 	error = XFS_QM_MOUNT(mp, quotamount, quotaflags);
 	if (error)
-		goto error4;
+		goto out_rtunmount;
 
 	/*
 	 * Now we are mounted, reserve a small amount of unused space for
@@ -1194,18 +1189,18 @@ xfs_mountfs(
 
 	return 0;
 
- error4:
-	/*
-	 * Free up the root inode.
-	 */
+ out_rtunmount:
+	xfs_rtunmount_inodes(mp);
+ out_rele_rip:
 	IRELE(rip);
- error3:
+ out_log_dealloc:
 	xfs_log_unmount_dealloc(mp);
- error2:
+ out_free_perag:
 	xfs_free_perag(mp);
- error1:
-	if (uuid_mounted)
+ out_remove_uuid:
+	if (!(mp->m_flags & XFS_MOUNT_NOUUID))
 		uuid_table_remove(&mp->m_sb.sb_uuid);
+ out:
 	return error;
 }
 
@@ -1226,10 +1221,7 @@ xfs_unmountfs(
 	 */
 	XFS_QM_UNMOUNT(mp);
 
-	if (mp->m_rbmip)
-		IRELE(mp->m_rbmip);
-	if (mp->m_rsumip)
-		IRELE(mp->m_rsumip);
+	xfs_rtunmount_inodes(mp);
 	IRELE(mp->m_rootip);
 
 	/*

fs/xfs/xfs_mount.h

@@ -500,9 +500,6 @@ typedef struct xfs_mod_sb {
 	int64_t		msb_delta;	/* Change to make to specified field */
 } xfs_mod_sb_t;
 
-#define	XFS_MOUNT_ILOCK(mp)	mutex_lock(&((mp)->m_ilock))
-#define	XFS_MOUNT_IUNLOCK(mp)	mutex_unlock(&((mp)->m_ilock))
-
 extern int	xfs_log_sbcount(xfs_mount_t *, uint);
 extern int	xfs_mountfs(xfs_mount_t *mp);
 extern void	xfs_mountfs_check_barriers(xfs_mount_t *mp);

fs/xfs/xfs_quota.h

@@ -185,7 +185,6 @@ typedef struct xfs_qoff_logformat {
  * to a single function. None of these XFS_QMOPT_* flags are meant to have
  * persistent values (ie. their values can and will change between versions)
  */
-#define XFS_QMOPT_DQLOCK	0x0000001 /* dqlock */
 #define XFS_QMOPT_DQALLOC	0x0000002 /* alloc dquot ondisk if needed */
 #define XFS_QMOPT_UQUOTA	0x0000004 /* user dquot requested */
 #define XFS_QMOPT_PQUOTA	0x0000008 /* project dquot requested */

fs/xfs/xfs_rtalloc.c

@@ -2288,6 +2288,16 @@ xfs_rtmount_inodes(
 	return 0;
 }
 
+void
+xfs_rtunmount_inodes(
+	struct xfs_mount	*mp)
+{
+	if (mp->m_rbmip)
+		IRELE(mp->m_rbmip);
+	if (mp->m_rsumip)
+		IRELE(mp->m_rsumip);
+}
+
 /*
  * Pick an extent for allocation at the start of a new realtime file.
  * Use the sequence number stored in the atime field of the bitmap inode.

fs/xfs/xfs_rtalloc.h

@@ -108,6 +108,9 @@ xfs_rtfree_extent(
 int					/* error */
 xfs_rtmount_init(
 	struct xfs_mount	*mp);	/* file system mount structure */
+void
+xfs_rtunmount_inodes(
+	struct xfs_mount	*mp);
 
 /*
  * Get the bitmap and summary inodes into the mount structure
@@ -146,6 +149,7 @@ xfs_growfs_rt(
 # define xfs_growfs_rt(mp,in)                           (ENOSYS)
 # define xfs_rtmount_init(m)    (((mp)->m_sb.sb_rblocks == 0)? 0 : (ENOSYS))
 # define xfs_rtmount_inodes(m)  (((mp)->m_sb.sb_rblocks == 0)? 0 : (ENOSYS))
+# define xfs_rtunmount_inodes(m)
 #endif	/* CONFIG_XFS_RT */
 
 #endif	/* __KERNEL__ */

fs/xfs/xfs_vnodeops.c

@@ -2004,8 +2004,10 @@ xfs_link(
 	/* Return through std_return after this point. */
 
 	error = XFS_QM_DQATTACH(mp, sip, 0);
-	if (!error && sip != tdp)
-		error = XFS_QM_DQATTACH(mp, tdp, 0);
+	if (error)
+		goto std_return;
+
+	error = XFS_QM_DQATTACH(mp, tdp, 0);
 	if (error)
 		goto std_return;
 
@@ -2586,51 +2588,6 @@ std_return:
 	goto std_return;
 }
 
-int
-xfs_inode_flush(
-	xfs_inode_t	*ip,
-	int		flags)
-{
-	xfs_mount_t	*mp = ip->i_mount;
-	int		error = 0;
-
-	if (XFS_FORCED_SHUTDOWN(mp))
-		return XFS_ERROR(EIO);
-
-	/*
-	 * Bypass inodes which have already been cleaned by
-	 * the inode flush clustering code inside xfs_iflush
-	 */
-	if (xfs_inode_clean(ip))
-		return 0;
-
-	/*
-	 * We make this non-blocking if the inode is contended,
-	 * return EAGAIN to indicate to the caller that they
-	 * did not succeed. This prevents the flush path from
-	 * blocking on inodes inside another operation right
-	 * now, they get caught later by xfs_sync.
-	 */
-	if (flags & FLUSH_SYNC) {
-		xfs_ilock(ip, XFS_ILOCK_SHARED);
-		xfs_iflock(ip);
-	} else if (xfs_ilock_nowait(ip, XFS_ILOCK_SHARED)) {
-		if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip)) {
-			xfs_iunlock(ip, XFS_ILOCK_SHARED);
-			return EAGAIN;
-		}
-	} else {
-		return EAGAIN;
-	}
-
-	error = xfs_iflush(ip, (flags & FLUSH_SYNC) ? XFS_IFLUSH_SYNC
-						    : XFS_IFLUSH_ASYNC_NOBLOCK);
-	xfs_iunlock(ip, XFS_ILOCK_SHARED);
-
-	return error;
-}
-
-
 int
 xfs_set_dmattrs(
 	xfs_inode_t     *ip,

fs/xfs/xfs_vnodeops.h

@@ -38,7 +38,6 @@ int xfs_readdir(struct xfs_inode	*dp, void *dirent, size_t bufsize,
 int xfs_symlink(struct xfs_inode *dp, struct xfs_name *link_name,
 		const char *target_path, mode_t mode, struct xfs_inode **ipp,
 		cred_t *credp);
-int xfs_inode_flush(struct xfs_inode *ip, int flags);
 int xfs_set_dmattrs(struct xfs_inode *ip, u_int evmask, u_int16_t state);
 int xfs_reclaim(struct xfs_inode *ip);
 int xfs_change_file_space(struct xfs_inode *ip, int cmd,