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authorDarrick J. Wong <djwong@kernel.org>2024-07-02 11:23:11 -0700
committerDarrick J. Wong <djwong@kernel.org>2024-07-02 11:37:07 -0700
commite51987a12cb57ca3702bff5df8a615037b2c8f8a (patch)
treed6c7bd346efe0ee5ffd07bf065224c93820ad797 /fs/xfs/libxfs
parentbac3f784925299b5e69a857e7e03e59c88aa14be (diff)
xfs: simplify usage of the rcur local variable in xfs_refcount_finish_one
Only update rcur when we know the final *pcur value. Inspired-by: Christoph Hellwig <hch@lst.de> [djwong: don't leave the caller with a dangling ref] Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'fs/xfs/libxfs')
-rw-r--r--fs/xfs/libxfs/xfs_refcount.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c
index 10a16635d93f..4137a8d1ac13 100644
--- a/fs/xfs/libxfs/xfs_refcount.c
+++ b/fs/xfs/libxfs/xfs_refcount.c
@@ -1341,7 +1341,7 @@ xfs_refcount_finish_one(
struct xfs_btree_cur **pcur)
{
struct xfs_mount *mp = tp->t_mountp;
- struct xfs_btree_cur *rcur;
+ struct xfs_btree_cur *rcur = *pcur;
struct xfs_buf *agbp = NULL;
int error = 0;
xfs_agblock_t bno;
@@ -1359,7 +1359,6 @@ xfs_refcount_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) {
nr_ops = rcur->bc_refc.nr_ops;
shape_changes = rcur->bc_refc.shape_changes;
@@ -1373,11 +1372,11 @@ xfs_refcount_finish_one(
if (error)
return error;
- rcur = xfs_refcountbt_init_cursor(mp, tp, agbp, ri->ri_pag);
+ *pcur = rcur = xfs_refcountbt_init_cursor(mp, tp, agbp,
+ ri->ri_pag);
rcur->bc_refc.nr_ops = nr_ops;
rcur->bc_refc.shape_changes = shape_changes;
}
- *pcur = rcur;
switch (ri->ri_type) {
case XFS_REFCOUNT_INCREASE: