Btrfs: add __init macro to btrfs init functions
Adding __init macro gives kernel a hint that this function is only used
during the initialization phase and its memory resources can be freed up
after.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index a43af43..c4f625e 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -203,7 +203,7 @@ extern struct kmem_cache *btrfs_delayed_tree_ref_cachep;
extern struct kmem_cache *btrfs_delayed_data_ref_cachep;
extern struct kmem_cache *btrfs_delayed_extent_op_cachep;
-int btrfs_delayed_ref_init(void);
+int __init btrfs_delayed_ref_init(void);
void btrfs_delayed_ref_exit(void);
static inline struct btrfs_delayed_extent_op *