diff options
Diffstat (limited to 'fs/btrfs/delayed-ref.h')
| -rw-r--r-- | fs/btrfs/delayed-ref.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h index 43f3629760e9..50947b5a9152 100644 --- a/fs/btrfs/delayed-ref.h +++ b/fs/btrfs/delayed-ref.h @@ -34,14 +34,14 @@ * ref_head. Must clean this mess up later. */ struct btrfs_delayed_ref_node { - /* - * ref_head use rb tree, stored in ref_root->href. - * indexed by bytenr - */ - struct rb_node rb_node; - /*data/tree ref use list, stored in ref_head->ref_list. */ struct list_head list; + /* + * If action is BTRFS_ADD_DELAYED_REF, also link this node to + * ref_head->ref_add_list, then we do not need to iterate the + * whole ref_head->ref_list to find BTRFS_ADD_DELAYED_REF nodes. + */ + struct list_head add_list; /* the starting bytenr of the extent */ u64 bytenr; @@ -99,6 +99,8 @@ struct btrfs_delayed_ref_head { spinlock_t lock; struct list_head ref_list; + /* accumulate add BTRFS_ADD_DELAYED_REF nodes to this ref_add_list. */ + struct list_head ref_add_list; struct rb_node href_node; |