xfs: replace no-op firstblock init with ->t_firstblock

Source kernel commit: fb91f4b5d6187996796f4a9989decdf6ead12851

xfs_refcount_recover_cow_leftovers() has no need for a firstblock
variable and so passes an unrelated xfs_fsblock_t to
xfs_defer_init() to avoid declaring one. Replace this no-op
initialization with ->t_firstblock. This will be optimized away by
the removal of the xfs_defer_init() firstblock param.

Signed-off-by: Brian Foster <bfoster@redhat.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>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/libxfs/xfs_refcount.c b/libxfs/xfs_refcount.c
index 7132ee1d10ff0acc13931386e35ba48446a94bbd..2cacb95bc7ef13e085007061d2a67bd4183f3392 100644 (file)
--- a/libxfs/xfs_refcount.c
+++ b/libxfs/xfs_refcount.c
@@ -1690,7 +1690,7 @@ xfs_refcount_recover_cow_leftovers(
                trace_xfs_refcount_recover_extent(mp, agno, &rr->rr_rrec);
 
                /* Free the orphan record */
-               xfs_defer_init(tp, &dfops, &fsb);
+               xfs_defer_init(tp, &dfops, &tp->t_firstblock);
                agbno = rr->rr_rrec.rc_startblock - XFS_REFC_COW_START;
                fsb = XFS_AGB_TO_FSB(mp, agno, agbno);
                error = xfs_refcount_free_cow_extent(mp, tp->t_dfops, fsb,