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xfs: reflink find shared should take a transaction

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Adapt _reflink_find_shared to take an optional transaction pointer.  The
inode scrubber code will need to decide (within transaction context) if
a file has shared blocks.  To avoid buffer deadlocks, we must pass the
tp through to this function's utility calls.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
This commit is contained in:
Darrick J. Wong
2017-06-16 11:00:10 -07:00
parent 378f681c4b
commit 92ff7285f1
3 changed files with 13 additions and 12 deletions
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4
fs/xfs/xfs_bmap_util.c
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@@ -455,8 +455,8 @@ xfs_getbmap_adjust_shared(
agno = XFS_FSB_TO_AGNO(mp, map->br_startblock);
agbno = XFS_FSB_TO_AGBNO(mp, map->br_startblock);
error = xfs_reflink_find_shared(mp, agno, agbno, map->br_blockcount,
&ebno, &elen, true);
error = xfs_reflink_find_shared(mp, NULL, agno, agbno,
map->br_blockcount, &ebno, &elen, true);
if (error)
return error;