From: Liu Bo <bo.liu@linux.alibaba.com>
Date: Tue, 14 Aug 2018 02:46:53 +0000 (+0800)
Subject: Btrfs: do not unnecessarily pass write_lock_level when processing leaf
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=4b6f8e9695da65e29f9f8ee84b39e0ba5b45e8e9;p=openwrt%2Fstaging%2Fblogic.git

Btrfs: do not unnecessarily pass write_lock_level when processing leaf

As we're going to return right after the call, it's not necessary to get
update the new write_lock_level from unlock_up.

Signed-off-by: Liu Bo <bo.liu@linux.alibaba.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 1f71695cb0a8..1124d236291d 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -2910,7 +2910,7 @@ cow_done:
 			}
 			if (!p->search_for_split)
 				unlock_up(p, level, lowest_unlock,
-					  min_write_lock_level, &write_lock_level);
+					  min_write_lock_level, NULL);
 			goto done;
 		}
 	}