diff mbox

[04/21] xfs: treat idx as a cursor in xfs_bmap_add_extent_hole_delay

Message ID 20171103144539.2187-5-hch@lst.de (mailing list archive)
State Accepted
Headers show

Commit Message

Christoph Hellwig Nov. 3, 2017, 2:45 p.m. UTC 
Stop poking before and after the index and just increment or decrement
it while doing our operations on it to prepare for a new extent list
implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/libxfs/xfs_bmap.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
diff mbox

Patch

diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index c0216e9e2af8..e2d8cbd054fe 100644
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -2584,7 +2584,6 @@  xfs_bmap_add_extent_hole_delay(
 		 * on the left and on the right.
 		 * Merge all three into a single extent record.
 		 */
-		--*idx;
 		temp = left.br_blockcount + new->br_blockcount +
 			right.br_blockcount;
 
@@ -2595,9 +2594,10 @@  xfs_bmap_add_extent_hole_delay(
 					 oldlen);
 		left.br_startblock = nullstartblock(newlen);
 		left.br_blockcount = temp;
-		xfs_iext_update_extent(ip, state, *idx, &left);
 
-		xfs_iext_remove(ip, *idx + 1, 1, state);
+		xfs_iext_remove(ip, *idx, 1, state);
+		--*idx;
+		xfs_iext_update_extent(ip, state, *idx, &left);
 		break;
 
 	case BMAP_LEFT_CONTIG:
@@ -2606,7 +2606,6 @@  xfs_bmap_add_extent_hole_delay(
 		 * on the left.
 		 * Merge the new allocation with the left neighbor.
 		 */
-		--*idx;
 		temp = left.br_blockcount + new->br_blockcount;
 
 		oldlen = startblockval(left.br_startblock) +
@@ -2615,6 +2614,8 @@  xfs_bmap_add_extent_hole_delay(
 					 oldlen);
 		left.br_blockcount = temp;
 		left.br_startblock = nullstartblock(newlen);
+
+		--*idx;
 		xfs_iext_update_extent(ip, state, *idx, &left);
 		break;