xfs: update #2 for v3.13-rc1

Here we have a performance fix for inode iversion, increased inode cluster size
 for v5 superblock filesystems, a fix for error handling in
 xfs_bmap_add_attrfork, and a MAINTAINERS update to add Dave.
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Merge tag 'xfs-for-linus-v3.13-rc1-2' of git://oss.sgi.com/xfs/xfs

Pull second xfs update from Ben Myers:
 "There are a couple of patches that I wasn't quite sure about in time
  for our initial 3.13 pull request, a bugfix, and an update to add Dave
  to MAINTAINERS:

  Here we have a performance fix for inode iversion, increased inode
  cluster size for v5 superblock filesystems, a fix for error handling
  in xfs_bmap_add_attrfork, and a MAINTAINERS update to add Dave"

* tag 'xfs-for-linus-v3.13-rc1-2' of git://oss.sgi.com/xfs/xfs:
  xfs: open code inc_inode_iversion when logging an inode
  xfs: increase inode cluster size for v5 filesystems
  xfs: fix unlock in xfs_bmap_add_attrfork
  xfs: update maintainers

MAINTAINERS

@@ -9525,8 +9525,8 @@ F:	drivers/xen/*swiotlb*
 
 XFS FILESYSTEM
 P:	Silicon Graphics Inc
+M:	Dave Chinner <dchinner@fromorbit.com>
 M:	Ben Myers <bpm@sgi.com>
-M:	Alex Elder <elder@kernel.org>
 M:	xfs@oss.sgi.com
 L:	xfs@oss.sgi.com
 W:	http://oss.sgi.com/projects/xfs

fs/xfs/xfs_bmap.c

@@ -1137,6 +1137,7 @@ xfs_bmap_add_attrfork(
 	int			committed;	/* xaction was committed */
 	int			logflags;	/* logging flags */
 	int			error;		/* error return value */
+	int			cancel_flags = 0;
 
 	ASSERT(XFS_IFORK_Q(ip) == 0);
 
@@ -1147,19 +1148,20 @@ xfs_bmap_add_attrfork(
 	if (rsvd)
 		tp->t_flags |= XFS_TRANS_RESERVE;
 	error = xfs_trans_reserve(tp, &M_RES(mp)->tr_addafork, blks, 0);
-	if (error)
+	if (error) {
-		goto error0;
+		xfs_trans_cancel(tp, 0);
+		return error;
+	}
+	cancel_flags = XFS_TRANS_RELEASE_LOG_RES;
 	xfs_ilock(ip, XFS_ILOCK_EXCL);
 	error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ?
 			XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES :
 			XFS_QMOPT_RES_REGBLKS);
-	if (error) {
+	if (error)
-		xfs_iunlock(ip, XFS_ILOCK_EXCL);
+		goto trans_cancel;
-		xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES);
+	cancel_flags |= XFS_TRANS_ABORT;
-		return error;
-	}
 	if (XFS_IFORK_Q(ip))
-		goto error1;
+		goto trans_cancel;
 	if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) {
 		/*
 		 * For inodes coming from pre-6.2 filesystems.
@@ -1169,7 +1171,7 @@ xfs_bmap_add_attrfork(
 	}
 	ASSERT(ip->i_d.di_anextents == 0);
 
-	xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+	xfs_trans_ijoin(tp, ip, 0);
 	xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
 
 	switch (ip->i_d.di_format) {
@@ -1191,7 +1193,7 @@ xfs_bmap_add_attrfork(
 	default:
 		ASSERT(0);
 		error = XFS_ERROR(EINVAL);
-		goto error1;
+		goto trans_cancel;
 	}
 
 	ASSERT(ip->i_afp == NULL);
@@ -1219,7 +1221,7 @@ xfs_bmap_add_attrfork(
 	if (logflags)
 		xfs_trans_log_inode(tp, ip, logflags);
 	if (error)
-		goto error2;
+		goto bmap_cancel;
 	if (!xfs_sb_version_hasattr(&mp->m_sb) ||
 	   (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) {
 		__int64_t sbfields = 0;
@@ -1242,14 +1244,16 @@ xfs_bmap_add_attrfork(
 
 	error = xfs_bmap_finish(&tp, &flist, &committed);
 	if (error)
-		goto error2;
+		goto bmap_cancel;
-	return xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
+	error = xfs_trans_commit(tp, XFS_TRANS_RELEASE_LOG_RES);
-error2:
+	xfs_iunlock(ip, XFS_ILOCK_EXCL);
-	xfs_bmap_cancel(&flist);
+	return error;
-error1:
+
+bmap_cancel:
+	xfs_bmap_cancel(&flist);
+trans_cancel:
+	xfs_trans_cancel(tp, cancel_flags);
 	xfs_iunlock(ip, XFS_ILOCK_EXCL);
-error0:
-	xfs_trans_cancel(tp, XFS_TRANS_RELEASE_LOG_RES|XFS_TRANS_ABORT);
 	return error;
 }
 

fs/xfs/xfs_mount.c

@@ -41,6 +41,7 @@
 #include "xfs_fsops.h"
 #include "xfs_trace.h"
 #include "xfs_icache.h"
+#include "xfs_dinode.h"
 
 
 #ifdef HAVE_PERCPU_SB
@@ -718,8 +719,22 @@ xfs_mountfs(
 	 * Set the inode cluster size.
 	 * This may still be overridden by the file system
 	 * block size if it is larger than the chosen cluster size.
+	 *
+	 * For v5 filesystems, scale the cluster size with the inode size to
+	 * keep a constant ratio of inode per cluster buffer, but only if mkfs
+	 * has set the inode alignment value appropriately for larger cluster
+	 * sizes.
 	 */
 	mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE;
+	if (xfs_sb_version_hascrc(&mp->m_sb)) {
+		int	new_size = mp->m_inode_cluster_size;
+
+		new_size *= mp->m_sb.sb_inodesize / XFS_DINODE_MIN_SIZE;
+		if (mp->m_sb.sb_inoalignmt >= XFS_B_TO_FSBT(mp, new_size))
+			mp->m_inode_cluster_size = new_size;
+		xfs_info(mp, "Using inode cluster size of %d bytes",
+			 mp->m_inode_cluster_size);
+	}
 
 	/*
 	 * Set inode alignment fields

fs/xfs/xfs_mount.h

@@ -112,7 +112,7 @@ typedef struct xfs_mount {
 	__uint8_t		m_blkbb_log;	/* blocklog - BBSHIFT */
 	__uint8_t		m_agno_log;	/* log #ag's */
 	__uint8_t		m_agino_log;	/* #bits for agino in inum */
-	__uint16_t		m_inode_cluster_size;/* min inode buf size */
+	uint			m_inode_cluster_size;/* min inode buf size */
 	uint			m_blockmask;	/* sb_blocksize-1 */
 	uint			m_blockwsize;	/* sb_blocksize in words */
 	uint			m_blockwmask;	/* blockwsize-1 */

fs/xfs/xfs_trans_inode.c

@@ -111,12 +111,14 @@ xfs_trans_log_inode(
 
 	/*
 	 * First time we log the inode in a transaction, bump the inode change
-	 * counter if it is configured for this to occur.
+	 * counter if it is configured for this to occur. We don't use
+	 * inode_inc_version() because there is no need for extra locking around
+	 * i_version as we already hold the inode locked exclusively for
+	 * metadata modification.
 	 */
 	if (!(ip->i_itemp->ili_item.li_desc->lid_flags & XFS_LID_DIRTY) &&
 	    IS_I_VERSION(VFS_I(ip))) {
-		inode_inc_iversion(VFS_I(ip));
+		ip->i_d.di_changecount = ++VFS_I(ip)->i_version;
-		ip->i_d.di_changecount = VFS_I(ip)->i_version;
 		flags |= XFS_ILOG_CORE;
 	}
 

fs/xfs/xfs_trans_resv.c

@@ -385,8 +385,7 @@ xfs_calc_ifree_reservation(
 		xfs_calc_inode_res(mp, 1) +
 		xfs_calc_buf_res(2, mp->m_sb.sb_sectsize) +
 		xfs_calc_buf_res(1, XFS_FSB_TO_B(mp, 1)) +
-		MAX((__uint16_t)XFS_FSB_TO_B(mp, 1),
+		max_t(uint, XFS_FSB_TO_B(mp, 1), XFS_INODE_CLUSTER_SIZE(mp)) +
-		    XFS_INODE_CLUSTER_SIZE(mp)) +
 		xfs_calc_buf_res(1, 0) +
 		xfs_calc_buf_res(2 + XFS_IALLOC_BLOCKS(mp) +
 				 mp->m_in_maxlevels, 0) +