1 files changed, 194 insertions, 150 deletions

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index ebdb76d..6409b37 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -136,15 +136,9 @@ xfs_mount_init(void)
 		mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB;
 	}
 
-	AIL_LOCKINIT(&mp->m_ail_lock, "xfs_ail");
-	spinlock_init(&mp->m_sb_lock, "xfs_sb");
+	spin_lock_init(&mp->m_sb_lock);
 	mutex_init(&mp->m_ilock);
 	mutex_init(&mp->m_growlock);
-	/*
-	 * Initialize the AIL.
-	 */
-	xfs_trans_ail_init(mp);
-
 	atomic_set(&mp->m_active_trans, 0);
 
 	return mp;
@@ -171,7 +165,7 @@ xfs_mount_free(
 			  sizeof(xfs_perag_t) * mp->m_sb.sb_agcount);
 	}
 
-	AIL_LOCK_DESTROY(&mp->m_ail_lock);
+	spinlock_destroy(&mp->m_ail_lock);
 	spinlock_destroy(&mp->m_sb_lock);
 	mutex_destroy(&mp->m_ilock);
 	mutex_destroy(&mp->m_growlock);
@@ -616,7 +610,7 @@ xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
 	int	i;
 
 	mp->m_agfrotor = mp->m_agirotor = 0;
-	spinlock_init(&mp->m_agirotor_lock, "m_agirotor_lock");
+	spin_lock_init(&mp->m_agirotor_lock);
 	mp->m_maxagi = mp->m_sb.sb_agcount;
 	mp->m_blkbit_log = sbp->sb_blocklog + XFS_NBBYLOG;
 	mp->m_blkbb_log = sbp->sb_blocklog - BBSHIFT;
@@ -696,7 +690,6 @@ xfs_initialize_perag_data(xfs_mount_t *mp, xfs_agnumber_t agcount)
 	uint64_t	bfreelst = 0;
 	uint64_t	btree = 0;
 	int		error;
-	int		s;
 
 	for (index = 0; index < agcount; index++) {
 		/*
@@ -721,11 +714,11 @@ xfs_initialize_perag_data(xfs_mount_t *mp, xfs_agnumber_t agcount)
 	/*
 	 * Overwrite incore superblock counters with just-read data
 	 */
-	s = XFS_SB_LOCK(mp);
+	spin_lock(&mp->m_sb_lock);
 	sbp->sb_ifree = ifree;
 	sbp->sb_icount = ialloc;
 	sbp->sb_fdblocks = bfree + bfreelst + btree;
-	XFS_SB_UNLOCK(mp, s);
+	spin_unlock(&mp->m_sb_lock);
 
 	/* Fixup the per-cpu counters as well. */
 	xfs_icsb_reinit_counters(mp);
@@ -734,49 +727,13 @@ xfs_initialize_perag_data(xfs_mount_t *mp, xfs_agnumber_t agcount)
 }
 
 /*
- * 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
- *		so we don't mount terabyte filesystems
- *	- init mount struct realtime fields
- *	- allocate inode hash table for fs
- *	- init directory manager
- *	- perform recovery and init the log manager
+ * Update alignment values based on mount options and sb values
  */
-int
-xfs_mountfs(
-	xfs_mount_t	*mp,
-	int		mfsi_flags)
+STATIC int
+xfs_update_alignment(xfs_mount_t *mp, int mfsi_flags, __uint64_t *update_flags)
 {
-	xfs_buf_t	*bp;
 	xfs_sb_t	*sbp = &(mp->m_sb);
-	xfs_inode_t	*rip;
-	bhv_vnode_t	*rvp = NULL;
-	int		readio_log, writeio_log;
-	xfs_daddr_t	d;
-	__uint64_t	resblks;
-	__int64_t	update_flags;
-	uint		quotamount, quotaflags;
-	int		agno;
-	int		uuid_mounted = 0;
-	int		error = 0;
 
-	if (mp->m_sb_bp == NULL) {
-		if ((error = xfs_readsb(mp, mfsi_flags))) {
-			return error;
-		}
-	}
-	xfs_mount_common(mp, sbp);
-
-	/*
-	 * Check if sb_agblocks is aligned at stripe boundary
-	 * If sb_agblocks is NOT aligned turn off m_dalign since
-	 * allocator alignment is within an ag, therefore ag has
-	 * to be aligned at stripe boundary.
-	 */
-	update_flags = 0LL;
 	if (mp->m_dalign && !(mfsi_flags & XFS_MFSI_SECOND)) {
 		/*
 		 * If stripe unit and stripe width are not multiples
@@ -787,8 +744,7 @@ xfs_mountfs(
 			if (mp->m_flags & XFS_MOUNT_RETERR) {
 				cmn_err(CE_WARN,
 					"XFS: alignment check 1 failed");
-				error = XFS_ERROR(EINVAL);
-				goto error1;
+				return XFS_ERROR(EINVAL);
 			}
 			mp->m_dalign = mp->m_swidth = 0;
 		} else {
@@ -798,8 +754,7 @@ xfs_mountfs(
 			mp->m_dalign = XFS_BB_TO_FSBT(mp, mp->m_dalign);
 			if (mp->m_dalign && (sbp->sb_agblocks % mp->m_dalign)) {
 				if (mp->m_flags & XFS_MOUNT_RETERR) {
-					error = XFS_ERROR(EINVAL);
-					goto error1;
+					return XFS_ERROR(EINVAL);
 				}
 				xfs_fs_cmn_err(CE_WARN, mp,
 "stripe alignment turned off: sunit(%d)/swidth(%d) incompatible with agsize(%d)",
@@ -816,8 +771,7 @@ xfs_mountfs(
 "stripe alignment turned off: sunit(%d) less than bsize(%d)",
                                         	mp->m_dalign,
 						mp->m_blockmask +1);
-					error = XFS_ERROR(EINVAL);
-					goto error1;
+					return XFS_ERROR(EINVAL);
 				}
 				mp->m_swidth = 0;
 			}
@@ -830,11 +784,11 @@ xfs_mountfs(
 		if (XFS_SB_VERSION_HASDALIGN(sbp)) {
 			if (sbp->sb_unit != mp->m_dalign) {
 				sbp->sb_unit = mp->m_dalign;
-				update_flags |= XFS_SB_UNIT;
+				*update_flags |= XFS_SB_UNIT;
 			}
 			if (sbp->sb_width != mp->m_swidth) {
 				sbp->sb_width = mp->m_swidth;
-				update_flags |= XFS_SB_WIDTH;
+				*update_flags |= XFS_SB_WIDTH;
 			}
 		}
 	} else if ((mp->m_flags & XFS_MOUNT_NOALIGN) != XFS_MOUNT_NOALIGN &&
@@ -843,49 +797,45 @@ xfs_mountfs(
 			mp->m_swidth = sbp->sb_width;
 	}
 
-	xfs_alloc_compute_maxlevels(mp);
-	xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK);
-	xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK);
-	xfs_ialloc_compute_maxlevels(mp);
+	return 0;
+}
 
-	if (sbp->sb_imax_pct) {
-		__uint64_t	icount;
+/*
+ * Set the maximum inode count for this filesystem
+ */
+STATIC void
+xfs_set_maxicount(xfs_mount_t *mp)
+{
+	xfs_sb_t	*sbp = &(mp->m_sb);
+	__uint64_t	icount;
 
-		/* Make sure the maximum inode count is a multiple of the
-		 * units we allocate inodes in.
+	if (sbp->sb_imax_pct) {
+		/*
+		 * Make sure the maximum inode count is a multiple
+		 * of the units we allocate inodes in.
 		 */
-
 		icount = sbp->sb_dblocks * sbp->sb_imax_pct;
 		do_div(icount, 100);
 		do_div(icount, mp->m_ialloc_blks);
 		mp->m_maxicount = (icount * mp->m_ialloc_blks)  <<
 				   sbp->sb_inopblog;
-	} else
+	} else {
 		mp->m_maxicount = 0;
-
-	mp->m_maxioffset = xfs_max_file_offset(sbp->sb_blocklog);
-
-	/*
-	 * XFS uses the uuid from the superblock as the unique
-	 * identifier for fsid.  We can not use the uuid from the volume
-	 * since a single partition filesystem is identical to a single
-	 * partition volume/filesystem.
-	 */
-	if ((mfsi_flags & XFS_MFSI_SECOND) == 0 &&
-	    (mp->m_flags & XFS_MOUNT_NOUUID) == 0) {
-		if (xfs_uuid_mount(mp)) {
-			error = XFS_ERROR(EINVAL);
-			goto error1;
-		}
-		uuid_mounted=1;
 	}
+}
+
+/*
+ * Set the default minimum read and write sizes unless
+ * already specified in a mount option.
+ * We use smaller I/O sizes when the file system
+ * is being used for NFS service (wsync mount option).
+ */
+STATIC void
+xfs_set_rw_sizes(xfs_mount_t *mp)
+{
+	xfs_sb_t	*sbp = &(mp->m_sb);
+	int		readio_log, writeio_log;
 
-	/*
-	 * Set the default minimum read and write sizes unless
-	 * already specified in a mount option.
-	 * We use smaller I/O sizes when the file system
-	 * is being used for NFS service (wsync mount option).
-	 */
 	if (!(mp->m_flags & XFS_MOUNT_DFLT_IOSIZE)) {
 		if (mp->m_flags & XFS_MOUNT_WSYNC) {
 			readio_log = XFS_WSYNC_READIO_LOG;
@@ -911,17 +861,14 @@ xfs_mountfs(
 		mp->m_writeio_log = writeio_log;
 	}
 	mp->m_writeio_blocks = 1 << (mp->m_writeio_log - sbp->sb_blocklog);
+}
 
-	/*
-	 * 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.
-	 */
-	mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE;
-
-	/*
-	 * Set whether we're using inode alignment.
-	 */
+/*
+ * Set whether we're using inode alignment.
+ */
+STATIC void
+xfs_set_inoalignment(xfs_mount_t *mp)
+{
 	if (XFS_SB_VERSION_HASALIGN(&mp->m_sb) &&
 	    mp->m_sb.sb_inoalignmt >=
 	    XFS_B_TO_FSBT(mp, mp->m_inode_cluster_size))
@@ -937,14 +884,22 @@ xfs_mountfs(
 		mp->m_sinoalign = mp->m_dalign;
 	else
 		mp->m_sinoalign = 0;
-	/*
-	 * Check that the data (and log if separate) are an ok size.
-	 */
+}
+
+/*
+ * Check that the data (and log if separate) are an ok size.
+ */
+STATIC int
+xfs_check_sizes(xfs_mount_t *mp, int mfsi_flags)
+{
+	xfs_buf_t	*bp;
+	xfs_daddr_t	d;
+	int		error;
+
 	d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks);
 	if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_dblocks) {
 		cmn_err(CE_WARN, "XFS: size check 1 failed");
-		error = XFS_ERROR(E2BIG);
-		goto error1;
+		return XFS_ERROR(E2BIG);
 	}
 	error = xfs_read_buf(mp, mp->m_ddev_targp,
 			     d - XFS_FSS_TO_BB(mp, 1),
@@ -953,10 +908,9 @@ xfs_mountfs(
 		xfs_buf_relse(bp);
 	} else {
 		cmn_err(CE_WARN, "XFS: size check 2 failed");
-		if (error == ENOSPC) {
+		if (error == ENOSPC)
 			error = XFS_ERROR(E2BIG);
-		}
-		goto error1;
+		return error;
 	}
 
 	if (((mfsi_flags & XFS_MFSI_CLIENT) == 0) &&
@@ -964,8 +918,7 @@ xfs_mountfs(
 		d = (xfs_daddr_t)XFS_FSB_TO_BB(mp, mp->m_sb.sb_logblocks);
 		if (XFS_BB_TO_FSB(mp, d) != mp->m_sb.sb_logblocks) {
 			cmn_err(CE_WARN, "XFS: size check 3 failed");
-			error = XFS_ERROR(E2BIG);
-			goto error1;
+			return XFS_ERROR(E2BIG);
 		}
 		error = xfs_read_buf(mp, mp->m_logdev_targp,
 				     d - XFS_FSB_TO_BB(mp, 1),
@@ -974,17 +927,111 @@ xfs_mountfs(
 			xfs_buf_relse(bp);
 		} else {
 			cmn_err(CE_WARN, "XFS: size check 3 failed");
-			if (error == ENOSPC) {
+			if (error == ENOSPC)
 				error = XFS_ERROR(E2BIG);
-			}
+			return error;
+		}
+	}
+	return 0;
+}
+
+/*
+ * 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
+ *		so we don't mount terabyte filesystems
+ *	- init mount struct realtime fields
+ *	- allocate inode hash table for fs
+ *	- init directory manager
+ *	- perform recovery and init the log manager
+ */
+int
+xfs_mountfs(
+	xfs_mount_t	*mp,
+	int		mfsi_flags)
+{
+	xfs_sb_t	*sbp = &(mp->m_sb);
+	xfs_inode_t	*rip;
+	bhv_vnode_t	*rvp = NULL;
+	__uint64_t	resblks;
+	__int64_t	update_flags = 0LL;
+	uint		quotamount, quotaflags;
+	int		agno;
+	int		uuid_mounted = 0;
+	int		error = 0;
+
+	if (mp->m_sb_bp == NULL) {
+		error = xfs_readsb(mp, mfsi_flags);
+		if (error)
+			return error;
+	}
+	xfs_mount_common(mp, sbp);
+
+	/*
+	 * Check if sb_agblocks is aligned at stripe boundary
+	 * If sb_agblocks is NOT aligned turn off m_dalign since
+	 * allocator alignment is within an ag, therefore ag has
+	 * to be aligned at stripe boundary.
+	 */
+	error = xfs_update_alignment(mp, mfsi_flags, &update_flags);
+	if (error)
+		goto error1;
+
+	xfs_alloc_compute_maxlevels(mp);
+	xfs_bmap_compute_maxlevels(mp, XFS_DATA_FORK);
+	xfs_bmap_compute_maxlevels(mp, XFS_ATTR_FORK);
+	xfs_ialloc_compute_maxlevels(mp);
+
+	xfs_set_maxicount(mp);
+
+	mp->m_maxioffset = xfs_max_file_offset(sbp->sb_blocklog);
+
+	/*
+	 * XFS uses the uuid from the superblock as the unique
+	 * identifier for fsid.  We can not use the uuid from the volume
+	 * since a single partition filesystem is identical to a single
+	 * partition volume/filesystem.
+	 */
+	if ((mfsi_flags & XFS_MFSI_SECOND) == 0 &&
+	    (mp->m_flags & XFS_MOUNT_NOUUID) == 0) {
+		if (xfs_uuid_mount(mp)) {
+			error = XFS_ERROR(EINVAL);
 			goto error1;
 		}
+		uuid_mounted=1;
 	}
 
 	/*
+	 * Set the minimum read and write sizes
+	 */
+	xfs_set_rw_sizes(mp);
+
+	/*
+	 * 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.
+	 */
+	mp->m_inode_cluster_size = XFS_INODE_BIG_CLUSTER_SIZE;
+
+	/*
+	 * Set inode alignment fields
+	 */
+	xfs_set_inoalignment(mp);
+
+	/*
+	 * Check that the data (and log if separate) are an ok size.
+	 */
+	error = xfs_check_sizes(mp, mfsi_flags);
+	if (error)
+		goto error1;
+
+	/*
 	 * Initialize realtime fields in the mount structure
 	 */
-	if ((error = xfs_rtmount_init(mp))) {
+	error = xfs_rtmount_init(mp);
+	if (error) {
 		cmn_err(CE_WARN, "XFS: RT mount failed");
 		goto error1;
 	}
@@ -1102,7 +1149,8 @@ xfs_mountfs(
 	/*
 	 * Initialize realtime inode pointers in the mount structure
 	 */
-	if ((error = xfs_rtmount_inodes(mp))) {
+	error = xfs_rtmount_inodes(mp);
+	if (error) {
 		/*
 		 * Free up the root inode.
 		 */
@@ -1120,7 +1168,8 @@ xfs_mountfs(
 	/*
 	 * Initialise the XFS quota management subsystem for this mount
 	 */
-	if ((error = XFS_QM_INIT(mp, &quotamount, &quotaflags)))
+	error = XFS_QM_INIT(mp, &quotamount, &quotaflags);
+	if (error)
 		goto error4;
 
 	/*
@@ -1137,7 +1186,8 @@ xfs_mountfs(
 	/*
 	 * Complete the quota initialisation, post-log-replay component.
 	 */
-	if ((error = XFS_QM_MOUNT(mp, quotamount, quotaflags, mfsi_flags)))
+	error = XFS_QM_MOUNT(mp, quotamount, quotaflags, mfsi_flags);
+	if (error)
 		goto error4;
 
 	/*
@@ -1255,7 +1305,6 @@ xfs_unmountfs(xfs_mount_t *mp, struct cred *cr)
 #if defined(DEBUG) || defined(INDUCE_IO_ERROR)
 	xfs_errortag_clearall(mp, 0);
 #endif
-	XFS_IODONE(mp);
 	xfs_mount_free(mp);
 	return 0;
 }
@@ -1441,7 +1490,7 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields)
  * Fields are not allowed to dip below zero, so if the delta would
  * do this do not apply it and return EINVAL.
  *
- * The SB_LOCK must be held when this routine is called.
+ * The m_sb_lock must be held when this routine is called.
  */
 int
 xfs_mod_incore_sb_unlocked(
@@ -1606,7 +1655,7 @@ xfs_mod_incore_sb_unlocked(
 /*
  * xfs_mod_incore_sb() is used to change a field in the in-core
  * superblock structure by the specified delta.  This modification
- * is protected by the SB_LOCK.  Just use the xfs_mod_incore_sb_unlocked()
+ * is protected by the m_sb_lock.  Just use the xfs_mod_incore_sb_unlocked()
  * routine to do the work.
  */
 int
@@ -1616,7 +1665,6 @@ xfs_mod_incore_sb(
 	int64_t		delta,
 	int		rsvd)
 {
-	unsigned long	s;
 	int	status;
 
 	/* check for per-cpu counters */
@@ -1633,9 +1681,9 @@ xfs_mod_incore_sb(
 		/* FALLTHROUGH */
 #endif
 	default:
-		s = XFS_SB_LOCK(mp);
+		spin_lock(&mp->m_sb_lock);
 		status = xfs_mod_incore_sb_unlocked(mp, field, delta, rsvd);
-		XFS_SB_UNLOCK(mp, s);
+		spin_unlock(&mp->m_sb_lock);
 		break;
 	}
 
@@ -1656,7 +1704,6 @@ xfs_mod_incore_sb(
 int
 xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
 {
-	unsigned long	s;
 	int		status=0;
 	xfs_mod_sb_t	*msbp;
 
@@ -1664,10 +1711,10 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
 	 * Loop through the array of mod structures and apply each
 	 * individually.  If any fail, then back out all those
 	 * which have already been applied.  Do all of this within
-	 * the scope of the SB_LOCK so that all of the changes will
+	 * the scope of the m_sb_lock so that all of the changes will
 	 * be atomic.
 	 */
-	s = XFS_SB_LOCK(mp);
+	spin_lock(&mp->m_sb_lock);
 	msbp = &msb[0];
 	for (msbp = &msbp[0]; msbp < (msb + nmsb); msbp++) {
 		/*
@@ -1681,11 +1728,11 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
 		case XFS_SBS_IFREE:
 		case XFS_SBS_FDBLOCKS:
 			if (!(mp->m_flags & XFS_MOUNT_NO_PERCPU_SB)) {
-				XFS_SB_UNLOCK(mp, s);
+				spin_unlock(&mp->m_sb_lock);
 				status = xfs_icsb_modify_counters(mp,
 							msbp->msb_field,
 							msbp->msb_delta, rsvd);
-				s = XFS_SB_LOCK(mp);
+				spin_lock(&mp->m_sb_lock);
 				break;
 			}
 			/* FALLTHROUGH */
@@ -1719,12 +1766,12 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
 			case XFS_SBS_IFREE:
 			case XFS_SBS_FDBLOCKS:
 				if (!(mp->m_flags & XFS_MOUNT_NO_PERCPU_SB)) {
-					XFS_SB_UNLOCK(mp, s);
+					spin_unlock(&mp->m_sb_lock);
 					status = xfs_icsb_modify_counters(mp,
 							msbp->msb_field,
 							-(msbp->msb_delta),
 							rsvd);
-					s = XFS_SB_LOCK(mp);
+					spin_lock(&mp->m_sb_lock);
 					break;
 				}
 				/* FALLTHROUGH */
@@ -1740,7 +1787,7 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
 			msbp--;
 		}
 	}
-	XFS_SB_UNLOCK(mp, s);
+	spin_unlock(&mp->m_sb_lock);
 	return status;
 }
 
@@ -1888,12 +1935,12 @@ xfs_mount_log_sbunit(
  *
  * Locking rules:
  *
- * 	1. XFS_SB_LOCK() before picking up per-cpu locks
+ * 	1. m_sb_lock before picking up per-cpu locks
  * 	2. per-cpu locks always picked up via for_each_online_cpu() order
- * 	3. accurate counter sync requires XFS_SB_LOCK + per cpu locks
+ * 	3. accurate counter sync requires m_sb_lock + per cpu locks
  * 	4. modifying per-cpu counters requires holding per-cpu lock
- * 	5. modifying global counters requires holding XFS_SB_LOCK
- *	6. enabling or disabling a counter requires holding the XFS_SB_LOCK
+ * 	5. modifying global counters requires holding m_sb_lock
+ *	6. enabling or disabling a counter requires holding the m_sb_lock 
  *	   and _none_ of the per-cpu locks.
  *
  * Disabled counters are only ever re-enabled by a balance operation
@@ -1920,7 +1967,6 @@ xfs_icsb_cpu_notify(
 {
 	xfs_icsb_cnts_t *cntp;
 	xfs_mount_t	*mp;
-	int		s;
 
 	mp = (xfs_mount_t *)container_of(nfb, xfs_mount_t, m_icsb_notifier);
 	cntp = (xfs_icsb_cnts_t *)
@@ -1946,7 +1992,7 @@ xfs_icsb_cpu_notify(
 		 * count into the total on the global superblock and
 		 * re-enable the counters. */
 		xfs_icsb_lock(mp);
-		s = XFS_SB_LOCK(mp);
+		spin_lock(&mp->m_sb_lock);
 		xfs_icsb_disable_counter(mp, XFS_SBS_ICOUNT);
 		xfs_icsb_disable_counter(mp, XFS_SBS_IFREE);
 		xfs_icsb_disable_counter(mp, XFS_SBS_FDBLOCKS);
@@ -1963,7 +2009,7 @@ xfs_icsb_cpu_notify(
 					 XFS_ICSB_SB_LOCKED, 0);
 		xfs_icsb_balance_counter(mp, XFS_SBS_FDBLOCKS,
 					 XFS_ICSB_SB_LOCKED, 0);
-		XFS_SB_UNLOCK(mp, s);
+		spin_unlock(&mp->m_sb_lock);
 		xfs_icsb_unlock(mp);
 		break;
 	}
@@ -2194,11 +2240,10 @@ xfs_icsb_sync_counters_flags(
 	int		flags)
 {
 	xfs_icsb_cnts_t	cnt;
-	int		s;
 
 	/* Pass 1: lock all counters */
 	if ((flags & XFS_ICSB_SB_LOCKED) == 0)
-		s = XFS_SB_LOCK(mp);
+		spin_lock(&mp->m_sb_lock);
 
 	xfs_icsb_count(mp, &cnt, flags);
 
@@ -2211,7 +2256,7 @@ xfs_icsb_sync_counters_flags(
 		mp->m_sb.sb_fdblocks = cnt.icsb_fdblocks;
 
 	if ((flags & XFS_ICSB_SB_LOCKED) == 0)
-		XFS_SB_UNLOCK(mp, s);
+		spin_unlock(&mp->m_sb_lock);
 }
 
 /*
@@ -2252,11 +2297,10 @@ xfs_icsb_balance_counter(
 {
 	uint64_t	count, resid;
 	int		weight = num_online_cpus();
-	int		s;
 	uint64_t	min = (uint64_t)min_per_cpu;
 
 	if (!(flags & XFS_ICSB_SB_LOCKED))
-		s = XFS_SB_LOCK(mp);
+		spin_lock(&mp->m_sb_lock);
 
 	/* disable counter and sync counter */
 	xfs_icsb_disable_counter(mp, field);
@@ -2290,10 +2334,10 @@ xfs_icsb_balance_counter(
 	xfs_icsb_enable_counter(mp, field, count, resid);
 out:
 	if (!(flags & XFS_ICSB_SB_LOCKED))
-		XFS_SB_UNLOCK(mp, s);
+		spin_unlock(&mp->m_sb_lock);
 }
 
-int
+STATIC int
 xfs_icsb_modify_counters(
 	xfs_mount_t	*mp,
 	xfs_sb_field_t	field,
@@ -2302,7 +2346,7 @@ xfs_icsb_modify_counters(
 {
 	xfs_icsb_cnts_t	*icsbp;
 	long long	lcounter;	/* long counter for 64 bit fields */
-	int		cpu, ret = 0, s;
+	int		cpu, ret = 0;
 
 	might_sleep();
 again:
@@ -2380,15 +2424,15 @@ slow_path:
 	 * running atomically here, we know a rebalance cannot
 	 * be in progress. Hence we can go straight to operating
 	 * on the global superblock. We do not call xfs_mod_incore_sb()
-	 * here even though we need to get the SB_LOCK. Doing so
+	 * here even though we need to get the m_sb_lock. Doing so
 	 * will cause us to re-enter this function and deadlock.
-	 * Hence we get the SB_LOCK ourselves and then call
+	 * Hence we get the m_sb_lock ourselves and then call
 	 * xfs_mod_incore_sb_unlocked() as the unlocked path operates
 	 * directly on the global counters.
 	 */
-	s = XFS_SB_LOCK(mp);
+	spin_lock(&mp->m_sb_lock);
 	ret = xfs_mod_incore_sb_unlocked(mp, field, delta, rsvd);
-	XFS_SB_UNLOCK(mp, s);
+	spin_unlock(&mp->m_sb_lock);
 
 	/*
 	 * Now that we've modified the global superblock, we