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xfs: treat idx as a cursor in xfs_bmap_add_extent_hole_real 

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>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
hifive-unleashed-5.1
Christoph Hellwig 2017-11-03 10:34:40 -07:00 committed by Darrick J. Wong
parent 41d196f439
commit 1d2e0089e1
1 changed files with 5 additions and 5 deletions
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10
fs/xfs/libxfs/xfs_bmap.c
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@ -2742,11 +2742,11 @@ xfs_bmap_add_extent_hole_real(
* left and on the right.
* Merge all three into a single extent record.
*/
--*idx;
left.br_blockcount += new->br_blockcount + right.br_blockcount;
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);
XFS_IFORK_NEXT_SET(ip, whichfork,
XFS_IFORK_NEXTENTS(ip, whichfork) - 1);
@ -2778,10 +2778,10 @@ xfs_bmap_add_extent_hole_real(
* on the left.
* Merge the new allocation with the left neighbor.
*/
--*idx;
old = left;
left.br_blockcount += new->br_blockcount;
--*idx;
xfs_iext_update_extent(ip, state, *idx, &left);
if (cur == NULL) {