Btrfs: cleanup some BUG_ON()

This patch changes some BUG_ON() to the error return.
(but, most callers still use BUG_ON())

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 4f19a3e1bf32..a2134195a85e 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -48,7 +48,8 @@ int btrfs_insert_file_extent(struct btrfs_trans_handle *trans,
         struct extent_buffer *leaf;
 
         path = btrfs_alloc_path();
-        BUG_ON(!path);
+        if (!path)
+                return -ENOMEM;
         file_key.objectid = objectid;
         file_key.offset = pos;
         btrfs_set_key_type(&file_key, BTRFS_EXTENT_DATA_KEY);