[PATCH 05/13] btrfs: do not WARN_ON() if we can't find the reloc root

[Josef Bacik]

Any number of things could have gone wrong, like ENOMEM or EIO, so don't
WARN_ON() if we're unable to find the reloc root in the backref code.

Reported-by: Zygo Blaxell <ce3g8...@umail.furryterror.org>
Signed-off-by: Josef Bacik <jo...@toxicpanda.com>
---
 fs/btrfs/backref.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 02d7d7b2563b..f0877d2883f9 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -2624,7 +2624,7 @@ static int handle_direct_tree_backref(struct 
btrfs_backref_cache *cache,
                /* Only reloc backref cache cares about a specific root */
                if (cache->is_reloc) {
                        root = find_reloc_root(cache->fs_info, cur->bytenr);
-                       if (WARN_ON(!root))
+                       if (!root)
                                return -ENOENT;
                        cur->root = root;
                } else {
-- 
2.26.2