diff mbox series

[47/64] xfs: simplify usage of the rcur local variable in xfs_rmap_finish_one

Message ID 172783102490.4036371.3354599645070081989.stgit@frogsfrogsfrogs (mailing list archive)
State New
Headers show
Series [01/64] xfs: avoid redundant AGFL buffer invalidation | expand

Commit Message

Darrick J. Wong Oct. 2, 2024, 1:20 a.m. UTC 
From: Christoph Hellwig <hch@lst.de>

Source kernel commit: 905af72610d90f58f994feff4ead1fc258f5d2b1

Only update rcur when we know the final *pcur value.

Signed-off-by: Christoph Hellwig <hch@lst.de>
[djwong: don't leave the caller with a dangling ref]
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
 libxfs/xfs_rmap.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/libxfs/xfs_rmap.c b/libxfs/xfs_rmap.c
index 1b5004b9c..d60edaa23 100644
--- a/libxfs/xfs_rmap.c
+++ b/libxfs/xfs_rmap.c
@@ -2569,7 +2569,7 @@  xfs_rmap_finish_one(
 {
 	struct xfs_owner_info		oinfo;
 	struct xfs_mount		*mp = tp->t_mountp;
-	struct xfs_btree_cur		*rcur;
+	struct xfs_btree_cur		*rcur = *pcur;
 	struct xfs_buf			*agbp = NULL;
 	xfs_agblock_t			bno;
 	bool				unwritten;
@@ -2584,7 +2584,6 @@  xfs_rmap_finish_one(
 	 * If we haven't gotten a cursor or the cursor AG doesn't match
 	 * the startblock, get one now.
 	 */
-	rcur = *pcur;
 	if (rcur != NULL && rcur->bc_ag.pag != ri->ri_pag) {
 		xfs_btree_del_cursor(rcur, 0);
 		rcur = NULL;
@@ -2606,9 +2605,8 @@  xfs_rmap_finish_one(
 			return -EFSCORRUPTED;
 		}
 
-		rcur = xfs_rmapbt_init_cursor(mp, tp, agbp, ri->ri_pag);
+		*pcur = rcur = xfs_rmapbt_init_cursor(mp, tp, agbp, ri->ri_pag);
 	}
-	*pcur = rcur;
 
 	xfs_rmap_ino_owner(&oinfo, ri->ri_owner, ri->ri_whichfork,
 			ri->ri_bmap.br_startoff);