[2/3] btrfs: fix compile warning of uninitialized value

Commit Message

Kinglong Mee Jan. 29, 2016, 1:36 p.m. UTC

CC [M]  fs/btrfs/extent-tree.o
fs/btrfs/extent-tree.c: In function 'find_free_extent':
fs/btrfs/extent-tree.c:7021:34: warning: 'used_bg' may be used uninitialized in this function [-Wmaybe-uninitialized]
  struct btrfs_block_group_cache *used_bg;
                                  ^
Fixes: e570fd27f2 ("Btrfs: fix broken free space cache after the system crashed")
Signed-off-by: Kinglong Mee <[e-mail]>
---
 fs/btrfs/extent-tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index e2287c7..f24e4c3 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -7018,7 +7018,7 @@  btrfs_lock_cluster(struct btrfs_block_group_cache *block_group,
 		   struct btrfs_free_cluster *cluster,
 		   int delalloc)
 {
-	struct btrfs_block_group_cache *used_bg;
+	struct btrfs_block_group_cache *used_bg = NULL;
 	bool locked = false;
 again:
 	spin_lock(&cluster->refill_lock);