summaryrefslogtreecommitdiffstats
path: root/fs/xfs/xfs_mount.c
diff options
context:
space:
mode:
authorBrian Foster <bfoster@redhat.com>2015-08-19 09:58:36 +1000
committerDave Chinner <david@fromorbit.com>2015-08-19 09:58:36 +1000
commitf0b2efad16e78623b5a156f6e4e9166907b83155 (patch)
tree82ebc3e9a7524046d748dd0bebae3caeb9bc91fd /fs/xfs/xfs_mount.c
parente32a1d1fbf6eb2bdc24aa0502e827ff4d2234604 (diff)
downloadlinux-f0b2efad16e78623b5a156f6e4e9166907b83155.tar.bz2
xfs: don't leave EFIs on AIL on mount failure
Log recovery occurs in two phases at mount time. In the first phase, EFIs and EFDs are processed and potentially cancelled out. EFIs without EFD objects are inserted into the AIL for processing and recovery in the second phase. xfs_mountfs() runs various other operations between the phases and is thus subject to failure. If failure occurs after the first phase but before the second, pending EFIs sit on the AIL, pin it and cause the mount to hang. Update the mount sequence to ensure that pending EFIs are cancelled in the event of failure. Add a recovery cancellation mechanism to iterate the AIL and cancel all EFI items when requested. Plumb cancellation support through the log mount finish helper and update xfs_mountfs() to invoke cancellation in the event of failure after recovery has started. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_mount.c')
-rw-r--r--fs/xfs/xfs_mount.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 461e791efad7..4825a8a0a506 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -615,14 +615,14 @@ xfs_default_resblks(xfs_mount_t *mp)
*/
int
xfs_mountfs(
- xfs_mount_t *mp)
+ struct xfs_mount *mp)
{
- xfs_sb_t *sbp = &(mp->m_sb);
- xfs_inode_t *rip;
- __uint64_t resblks;
- uint quotamount = 0;
- uint quotaflags = 0;
- int error = 0;
+ struct xfs_sb *sbp = &(mp->m_sb);
+ struct xfs_inode *rip;
+ __uint64_t resblks;
+ uint quotamount = 0;
+ uint quotaflags = 0;
+ int error = 0;
xfs_sb_mount_common(mp, sbp);
@@ -799,7 +799,9 @@ xfs_mountfs(
}
/*
- * log's mount-time initialization. Perform 1st part recovery if needed
+ * Log's mount-time initialization. The first part of recovery can place
+ * some items on the AIL, to be handled when recovery is finished or
+ * cancelled.
*/
error = xfs_log_mount(mp, mp->m_logdev_targp,
XFS_FSB_TO_DADDR(mp, sbp->sb_logstart),
@@ -910,9 +912,9 @@ xfs_mountfs(
}
/*
- * Finish recovering the file system. This part needed to be
- * delayed until after the root and real-time bitmap inodes
- * were consistently read in.
+ * Finish recovering the file system. This part needed to be delayed
+ * until after the root and real-time bitmap inodes were consistently
+ * read in.
*/
error = xfs_log_mount_finish(mp);
if (error) {
@@ -956,7 +958,7 @@ xfs_mountfs(
out_rele_rip:
IRELE(rip);
out_log_dealloc:
- xfs_log_unmount(mp);
+ xfs_log_mount_cancel(mp);
out_fail_wait:
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp)
xfs_wait_buftarg(mp->m_logdev_targp);