btrfs: add more __cold annotations
The __cold functions are placed to a special section, as they're
expected to be called rarely. This could help i-cache prefetches or help
compiler to decide which branches are more/less likely to be taken
without any other annotations needed.
Though we can't add more __exit annotations, it's still possible to add
__cold (that's also added with __exit). That way the following function
categories are tagged:
- printf wrappers, error messages
- exit helpers
Signed-off-by: David Sterba <dsterba@suse.com>
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index c4f625e..9e3e5af 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -204,7 +204,7 @@ extern struct kmem_cache *btrfs_delayed_data_ref_cachep;
extern struct kmem_cache *btrfs_delayed_extent_op_cachep;
int __init btrfs_delayed_ref_init(void);
-void btrfs_delayed_ref_exit(void);
+void __cold btrfs_delayed_ref_exit(void);
static inline struct btrfs_delayed_extent_op *
btrfs_alloc_delayed_extent_op(void)