1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 75899a01dded..83abd274370b 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1375,7 +1375,7 @@ static long btrfs_fallocate(struct file *file, int mode,
         while (1) {
                 em = btrfs_get_extent(inode, NULL, 0, cur_offset,
                                       alloc_end - cur_offset, 0);
-                BUG_ON(IS_ERR(em) || !em);
+                BUG_ON(IS_ERR_OR_NULL(em));
                 last_byte = min(extent_map_end(em), alloc_end);
                 last_byte = (last_byte + mask) & ~mask;
                 if (em->block_start == EXTENT_MAP_HOLE ||