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xfs: attach dquots before performing xfs_swap_extents

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Make sure we attach dquots to both inodes before swapping their extents.
This was found via manual code inspection by looking for places where we
could call xfs_trans_mod_dquot without dquots attached to inodes, and
confirmed by instrumenting the kernel and running xfs/328.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong 2019-11-09 12:04:30 -08:00
parent 2815a16d7f
commit 2713fefa5d
1 changed files with 8 additions and 0 deletions
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8
fs/xfs/xfs_bmap_util.c
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@ -1569,6 +1569,14 @@ xfs_swap_extents(
goto out_unlock;
}
error = xfs_qm_dqattach(ip);
if (error)
goto out_unlock;
error = xfs_qm_dqattach(tip);
if (error)
goto out_unlock;
error = xfs_swap_extent_flush(ip);
if (error)
goto out_unlock;