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xfs: remove XFS_MOUNT_NO_PERCPU_SB

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Fail the mount if we can't allocate memory for the per-CPU counters.
This is consistent with how we handle everything else in the mount
path and makes the superblock counter modification a lot simpler.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig 2010-09-30 02:25:54 +00:00 committed by Alex Elder
parent 50f59e8eed
commit 61ba35dea0
3 changed files with 19 additions and 29 deletions
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6
fs/xfs/linux-2.6/xfs_super.c
View File

@ -1518,8 +1518,9 @@ xfs_fs_fill_super(
if (error)
goto out_free_fsname;
if (xfs_icsb_init_counters(mp))
mp->m_flags |= XFS_MOUNT_NO_PERCPU_SB;
error = xfs_icsb_init_counters(mp);
if (error)
goto out_close_devices;
error = xfs_readsb(mp, flags);
if (error)
@ -1580,6 +1581,7 @@ xfs_fs_fill_super(
xfs_freesb(mp);
out_destroy_counters:
xfs_icsb_destroy_counters(mp);
out_close_devices:
xfs_close_devices(mp);
out_free_fsname:
xfs_free_fsname(mp);

40
fs/xfs/xfs_mount.c
View File

@ -1856,12 +1856,8 @@ xfs_mod_incore_sb(
case XFS_SBS_ICOUNT:
case XFS_SBS_IFREE:
case XFS_SBS_FDBLOCKS:
if (!(mp->m_flags & XFS_MOUNT_NO_PERCPU_SB)) {
status = xfs_icsb_modify_counters(mp, field,
delta, rsvd);
break;
}
/* FALLTHROUGH */
status = xfs_icsb_modify_counters(mp, field, delta, rsvd);
break;
#endif
default:
spin_lock(&mp->m_sb_lock);
@ -1910,15 +1906,12 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
case XFS_SBS_ICOUNT:
case XFS_SBS_IFREE:
case XFS_SBS_FDBLOCKS:
if (!(mp->m_flags & XFS_MOUNT_NO_PERCPU_SB)) {
spin_unlock(&mp->m_sb_lock);
status = xfs_icsb_modify_counters(mp,
msbp->msb_field,
msbp->msb_delta, rsvd);
spin_lock(&mp->m_sb_lock);
break;
}
/* FALLTHROUGH */
spin_unlock(&mp->m_sb_lock);
status = xfs_icsb_modify_counters(mp,
msbp->msb_field,
msbp->msb_delta, rsvd);
spin_lock(&mp->m_sb_lock);
break;
#endif
default:
status = xfs_mod_incore_sb_unlocked(mp,
@ -1948,16 +1941,13 @@ xfs_mod_incore_sb_batch(xfs_mount_t *mp, xfs_mod_sb_t *msb, uint nmsb, int rsvd)
case XFS_SBS_ICOUNT:
case XFS_SBS_IFREE:
case XFS_SBS_FDBLOCKS:
if (!(mp->m_flags & XFS_MOUNT_NO_PERCPU_SB)) {
spin_unlock(&mp->m_sb_lock);
status = xfs_icsb_modify_counters(mp,
msbp->msb_field,
-(msbp->msb_delta),
rsvd);
spin_lock(&mp->m_sb_lock);
break;
}
/* FALLTHROUGH */
spin_unlock(&mp->m_sb_lock);
status = xfs_icsb_modify_counters(mp,
msbp->msb_field,
-(msbp->msb_delta),
rsvd);
spin_lock(&mp->m_sb_lock);
break;
#endif
default:
status = xfs_mod_incore_sb_unlocked(mp,

2
fs/xfs/xfs_mount.h
View File

@ -232,8 +232,6 @@ typedef struct xfs_mount {
#define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
#define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
* I/O size in stat() */
#define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock
counters */
#define XFS_MOUNT_FILESTREAMS (1ULL << 24) /* enable the filestreams
allocator */
#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */