btrfs: use btrfs_tree_read_lock in btrfs_search_slot

We no longer use recursion, so
__btrfs_tree_read_lock(BTRFS_NESTING_NORMAL) == btrfs_tree_read_lock.
Replace this call with the simple helper.

Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 8148007fa259ae5ddafe4c495479d230c9a0351f..778a6d580545b5e0fcde9a64220d41b35834d96a 100644 (file)
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2802,7 +2802,7 @@ cow_done:
                                btrfs_tree_lock(b);
                                p->locks[level] = BTRFS_WRITE_LOCK;
                        } else {
-                               __btrfs_tree_read_lock(b, BTRFS_NESTING_NORMAL, 0);
+                               btrfs_tree_read_lock(b);
                                p->locks[level] = BTRFS_READ_LOCK;
                        }
                        p->nodes[level] = b;