Btrfs: remove always true check in unlock_up

As unlock_up() is written as

for () {
   if (!path->locks[i])
       break;
   ...
   if (... && path->locks[i]) {
   }
}

Apparently, @path->locks[i] is always true at this 'if'.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 2396823..973912e 100644 (file)
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2330,7 +2330,7 @@ static noinline void unlock_up(struct btrfs_path *path, int level,
                        no_skips = 1;
 
                t = path->nodes[i];
-               if (i >= lowest_unlock && i > skip_level && path->locks[i]) {
+               if (i >= lowest_unlock && i > skip_level) {
                        btrfs_tree_unlock_rw(t, path->locks[i]);
                        path->locks[i] = 0;
                        if (write_lock_level &&