The alloc_dummy_extent_buffer() function does not return error pointers,
it returns NULL on failure.
Fixes: 5068210cf625 ("btrfs: use dummy extent buffer for super block sys chunk array read")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
fs/btrfs/volumes.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 98ad92041ae4..791dd31360f9 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -7389,8 +7389,8 @@ int btrfs_read_sys_array(struct btrfs_fs_info *fs_info)
* that's fine, we will not go beyond system chunk array anyway.
*/
sb = alloc_dummy_extent_buffer(fs_info, BTRFS_SUPER_INFO_OFFSET);
- if (IS_ERR(sb))
- return PTR_ERR(sb);
+ if (!sb)
+ return -ENOMEM;
set_extent_buffer_uptodate(sb);
write_extent_buffer(sb, super_copy, 0, BTRFS_SUPER_INFO_SIZE);
--
2.20.1
