Btrfs: fix double increment of path->slots[0] in btrfs_next_leaf

if 1 is returned by btrfs_search_slot, the path already points to the
first item with 'key > searching key'. So increasing path->slots[0] by
one is superfluous in that case.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 60a45f3a4e91..7bb66c65ddfd 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -4146,7 +4146,8 @@ again:
          * advance the path if there are now more items available.
          */
         if (nritems > 0 && path->slots[0] < nritems - 1) {
-                path->slots[0]++;
+                if (ret == 0)
+                        path->slots[0]++;
                 ret = 0;
                 goto done;
         }