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

commit a580fb2c3479d993556e1c31b237c9e5be4944a3 upstream.

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Keerthana K <keerthana.kalyanasundaram@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 487697e8bc707de1597c36f221a30f481add5e01..7aa8c1a2161b8f0633bbb8238c64af3500ff81db 100644 (file)
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -5170,7 +5170,6 @@ static noinline int walk_down_proc(struct btrfs_trans_handle *trans,
                                               eb->start, level, 1,
                                               &wc->refs[level],
                                               &wc->flags[level]);
-               BUG_ON(ret == -ENOMEM);
                if (ret)
                        return ret;
                if (unlikely(wc->refs[level] == 0)) {