btrfs: don't BUG_ON on ENOMEM from btrfs_lookup_extent_info() in walk_down_proc()

We handle errors here properly, ENOMEM isn't fatal, return the error.

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/extent-tree.c b/fs/btrfs/extent-tree.c
index 92549499b3538b1e7a617804a258fc30a2997391..915ae708ebc760e4dfe74d39e8f62b8b13f29a21 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5397,7 +5397,6 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
                                               &wc->refs[level],
                                               &wc->flags[level],
                                               NULL);
-               BUG_ON(ret == -ENOMEM);
                if (ret)
                        return ret;
                BUG_ON(wc->refs[level] == 0);