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authorChristoph Hellwig <hch@sgi.com>2006-01-11 15:27:18 +1100
committerNathan Scott <nathans@sgi.com>2006-01-11 15:27:18 +1100
commit4ef19dddbaf2f24e492c18112fd8a04ce116daca (patch)
tree857a14290f682a9a1bc71d9a6b0e20f095c5cc91 /fs
parentd3a9b1f9da4ee3e6d284148412097621b1c9e575 (diff)
[XFS] enable write barriers by default
SGI-PV: 912426 SGI-Modid: xfs-linux-melb:xfs-kern:201981a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c3
-rw-r--r--fs/xfs/xfs_vfsops.c15
2 files changed, 17 insertions, 1 deletions
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 6116b5bf433..d8ec7463d8f 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -306,6 +306,7 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp)
xfs_fs_cmn_err(CE_NOTE, mp,
"Disabling barriers, not supported with external log device");
mp->m_flags &= ~XFS_MOUNT_BARRIER;
+ return;
}
if (mp->m_ddev_targp->pbr_bdev->bd_disk->queue->ordered ==
@@ -313,6 +314,7 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp)
xfs_fs_cmn_err(CE_NOTE, mp,
"Disabling barriers, not supported by the underlying device");
mp->m_flags &= ~XFS_MOUNT_BARRIER;
+ return;
}
error = xfs_barrier_test(mp);
@@ -320,6 +322,7 @@ xfs_mountfs_check_barriers(xfs_mount_t *mp)
xfs_fs_cmn_err(CE_NOTE, mp,
"Disabling barriers, trial barrier write failed");
mp->m_flags &= ~XFS_MOUNT_BARRIER;
+ return;
}
}
diff --git a/fs/xfs/xfs_vfsops.c b/fs/xfs/xfs_vfsops.c
index 7bdbd991ab1..3406399e25b 100644
--- a/fs/xfs/xfs_vfsops.c
+++ b/fs/xfs/xfs_vfsops.c
@@ -312,6 +312,8 @@ xfs_start_flags(
mp->m_flags |= XFS_MOUNT_NOUUID;
if (ap->flags & XFSMNT_BARRIER)
mp->m_flags |= XFS_MOUNT_BARRIER;
+ else
+ mp->m_flags &= ~XFS_MOUNT_BARRIER;
return 0;
}
@@ -655,6 +657,11 @@ xfs_mntupdate(
else
mp->m_flags &= ~XFS_MOUNT_NOATIME;
+ if (args->flags & XFSMNT_BARRIER)
+ mp->m_flags |= XFS_MOUNT_BARRIER;
+ else
+ mp->m_flags &= ~XFS_MOUNT_BARRIER;
+
if ((vfsp->vfs_flag & VFS_RDONLY) &&
!(*flags & MS_RDONLY)) {
vfsp->vfs_flag &= ~VFS_RDONLY;
@@ -1634,6 +1641,7 @@ xfs_vget(
#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
* unwritten extent conversion */
+#define MNTOPT_NOBARRIER "nobarrier" /* .. disable */
#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
@@ -1681,6 +1689,7 @@ xfs_parseargs(
args->flags2 |= XFSMNT2_COMPAT_IOSIZE;
args->flags |= XFSMNT_COMPAT_ATTR;
+ args->flags |= XFSMNT_BARRIER;
#if 0 /* XXX: off by default, until some remaining issues ironed out */
args->flags |= XFSMNT_IDELETE; /* default to on */
@@ -1806,6 +1815,8 @@ xfs_parseargs(
args->flags |= XFSMNT_NOUUID;
} else if (!strcmp(this_char, MNTOPT_BARRIER)) {
args->flags |= XFSMNT_BARRIER;
+ } else if (!strcmp(this_char, MNTOPT_NOBARRIER)) {
+ args->flags &= ~XFSMNT_BARRIER;
} else if (!strcmp(this_char, MNTOPT_IKEEP)) {
args->flags &= ~XFSMNT_IDELETE;
} else if (!strcmp(this_char, MNTOPT_NOIKEEP)) {
@@ -1892,7 +1903,6 @@ xfs_showargs(
{ XFS_MOUNT_NOUUID, "," MNTOPT_NOUUID },
{ XFS_MOUNT_NORECOVERY, "," MNTOPT_NORECOVERY },
{ XFS_MOUNT_OSYNCISOSYNC, "," MNTOPT_OSYNCISOSYNC },
- { XFS_MOUNT_BARRIER, "," MNTOPT_BARRIER },
{ XFS_MOUNT_IDELETE, "," MNTOPT_NOIKEEP },
{ 0, NULL }
};
@@ -1941,6 +1951,9 @@ xfs_showargs(
if (!(vfsp->vfs_flag & VFS_32BITINODES))
seq_printf(m, "," MNTOPT_64BITINODE);
+ if (!(vfsp->vfs_flag & XFS_MOUNT_BARRIER))
+ seq_printf(m, "," MNTOPT_NOBARRIER);
+
if (vfsp->vfs_flag & VFS_GRPID)
seq_printf(m, "," MNTOPT_GRPID);