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xfs: abort consistently on dquot flush failure

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The dquot flush handler effectively aborts the dquot flush if the
filesystem is already shut down, but doesn't actually shut down if
the flush fails. Update xfs_qm_dqflush() to consistently abort the
dquot flush and shutdown the fs if the flush fails with an
unexpected error.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Brian Foster 2020-05-06 13:25:22 -07:00 committed by Darrick J. Wong
parent 629dcb38dc
commit b707fffda6
1 changed files with 10 additions and 22 deletions
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32
fs/xfs/xfs_dquot.c
View file

@ -1068,6 +1068,7 @@ xfs_qm_dqflush(
struct xfs_buf **bpp) struct xfs_buf **bpp)
{ {
struct xfs_mount *mp = dqp->q_mount; struct xfs_mount *mp = dqp->q_mount;
struct xfs_log_item *lip = &dqp->q_logitem.qli_item;
struct xfs_buf *bp; struct xfs_buf *bp;
struct xfs_dqblk *dqb; struct xfs_dqblk *dqb;
struct xfs_disk_dquot *ddqp; struct xfs_disk_dquot *ddqp;
@ -1083,32 +1084,16 @@ xfs_qm_dqflush(
xfs_qm_dqunpin_wait(dqp); xfs_qm_dqunpin_wait(dqp);
/*
* This may have been unpinned because the filesystem is shutting
* down forcibly. If that's the case we must not write this dquot
* to disk, because the log record didn't make it to disk.
*
* We also have to remove the log item from the AIL in this case,
* as we wait for an emptry AIL as part of the unmount process.
*/
if (XFS_FORCED_SHUTDOWN(mp)) {
struct xfs_log_item *lip = &dqp->q_logitem.qli_item;
dqp->dq_flags &= ~XFS_DQ_DIRTY;
xfs_trans_ail_remove(lip, SHUTDOWN_CORRUPT_INCORE);
error = -EIO;
goto out_unlock;
}
/* /*
* Get the buffer containing the on-disk dquot * Get the buffer containing the on-disk dquot
*/ */
error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno, error = xfs_trans_read_buf(mp, NULL, mp->m_ddev_targp, dqp->q_blkno,
mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK, mp->m_quotainfo->qi_dqchunklen, XBF_TRYLOCK,
&bp, &xfs_dquot_buf_ops); &bp, &xfs_dquot_buf_ops);
if (error) if (error == -EAGAIN)
goto out_unlock; goto out_unlock;
if (error)
goto out_abort;
/* /*
* Calculate the location of the dquot inside the buffer. * Calculate the location of the dquot inside the buffer.
@ -1123,9 +1108,8 @@ xfs_qm_dqflush(
xfs_alert(mp, "corrupt dquot ID 0x%x in memory at %pS", xfs_alert(mp, "corrupt dquot ID 0x%x in memory at %pS",
be32_to_cpu(dqp->q_core.d_id), fa); be32_to_cpu(dqp->q_core.d_id), fa);
xfs_buf_relse(bp); xfs_buf_relse(bp);
xfs_dqfunlock(dqp); error = -EFSCORRUPTED;
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); goto out_abort;
return -EFSCORRUPTED;
} }
/* This is the only portion of data that needs to persist */ /* This is the only portion of data that needs to persist */
@ -1174,6 +1158,10 @@ xfs_qm_dqflush(
*bpp = bp; *bpp = bp;
return 0; return 0;
out_abort:
dqp->dq_flags &= ~XFS_DQ_DIRTY;
xfs_trans_ail_remove(lip, SHUTDOWN_CORRUPT_INCORE);
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
out_unlock: out_unlock:
xfs_dqfunlock(dqp); xfs_dqfunlock(dqp);
return error; return error;