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xfs: avoid false quotacheck after unclean shutdown 

The commit

83e782e xfs: Remove incore use of XFS_OQUOTA_ENFD and XFS_OQUOTA_CHKD

added a new function xfs_sb_quota_from_disk() which swaps
on-disk XFS_OQUOTA_* flags for in-core XFS_GQUOTA_* and XFS_PQUOTA_*
flags after the superblock is read.

However, if log recovery is required, the superblock is read again,
and the modified in-core flags are re-read from disk, so we have
XFS_OQUOTA_* flags in memory again.  This causes the
XFS_QM_NEED_QUOTACHECK() test to be true, because the XFS_OQUOTA_CHKD
is still set, and not XFS_GQUOTA_CHKD or XFS_PQUOTA_CHKD.

Change xfs_sb_from_disk to call xfs_sb_quota_from disk and always
convert the disk flags to in-memory flags.

Add a lower-level function which can be called with "false" to
not convert the flags, so that the sb verifier can verify
exactly what was on disk, per Brian Foster's suggestion.

Reported-by: Cyril B. <cbay@excellency.fr>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
This commit is contained in:
Eric Sandeen 2014-08-04 11:35:44 +10:00 committed by Dave Chinner
parent eedf32bfca
commit 5ef828c415
2 changed files with 20 additions and 5 deletions
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24
fs/xfs/libxfs/xfs_sb.c
View File

@ -386,10 +386,11 @@ xfs_sb_quota_from_disk(struct xfs_sb *sbp)
}
}
void
xfs_sb_from_disk(
static void
__xfs_sb_from_disk(
struct xfs_sb *to,
xfs_dsb_t *from)
xfs_dsb_t *from,
bool convert_xquota)
{
to->sb_magicnum = be32_to_cpu(from->sb_magicnum);
to->sb_blocksize = be32_to_cpu(from->sb_blocksize);
@ -445,6 +446,17 @@ xfs_sb_from_disk(
to->sb_pad = 0;
to->sb_pquotino = be64_to_cpu(from->sb_pquotino);
to->sb_lsn = be64_to_cpu(from->sb_lsn);
/* Convert on-disk flags to in-memory flags? */
if (convert_xquota)
xfs_sb_quota_from_disk(to);
}
void
xfs_sb_from_disk(
struct xfs_sb *to,
xfs_dsb_t *from)
{
__xfs_sb_from_disk(to, from, true);
}
static inline void
@ -560,7 +572,11 @@ xfs_sb_verify(
struct xfs_mount *mp = bp->b_target->bt_mount;
struct xfs_sb sb;
xfs_sb_from_disk(&sb, XFS_BUF_TO_SBP(bp));
/*
* Use call variant which doesn't convert quota flags from disk
* format, because xfs_mount_validate_sb checks the on-disk flags.
*/
__xfs_sb_from_disk(&sb, XFS_BUF_TO_SBP(bp), false);
/*
* Only check the in progress field for the primary superblock as

1
fs/xfs/xfs_mount.c
View File

@ -324,7 +324,6 @@ reread:
* Initialize the mount structure from the superblock.
*/
xfs_sb_from_disk(sbp, XFS_BUF_TO_SBP(bp));
xfs_sb_quota_from_disk(sbp);
/*
* If we haven't validated the superblock, do so now before we try