Btrfs: Free free_space item properly in btrfs_trim_block_group()

Since commit dc89e9824464e91fa0b06267864ceabe3186fd8b, we've changed
to use a specific slab for alocation of free_space items.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 11d2e9cea09e95b329cfe4e37aec5b50bcc46135..13c29b12a213a4e62c1e3b2187c7178798e18c9a 100644 (file)
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -2301,7 +2301,7 @@ int btrfs_trim_block_group(struct btrfs_block_group_cache *block_group,
                        start = entry->offset;
                        bytes = min(entry->bytes, end - start);
                        unlink_free_space(block_group, entry);
-                       kfree(entry);
+                       kmem_cache_free(btrfs_free_space_cachep, entry);
                }
 
                spin_unlock(&block_group->tree_lock);