diff options
Diffstat (limited to 'fs/btrfs/delayed-ref.h')
| -rw-r--r-- | fs/btrfs/delayed-ref.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h index b54261fe509b..9b28e800a604 100644 --- a/fs/btrfs/delayed-ref.h +++ b/fs/btrfs/delayed-ref.h @@ -70,20 +70,26 @@ struct btrfs_delayed_extent_op { struct btrfs_delayed_ref_head { u64 bytenr; u64 num_bytes; - refcount_t refs; + /* + * For insertion into struct btrfs_delayed_ref_root::href_root. + * Keep it in the same cache line as 'bytenr' for more efficient + * searches in the rbtree. + */ + struct rb_node href_node; /* * the mutex is held while running the refs, and it is also * held when checking the sum of reference modifications. */ struct mutex mutex; + refcount_t refs; + + /* Protects 'ref_tree' and 'ref_add_list'. */ spinlock_t lock; struct rb_root_cached ref_tree; /* accumulate add BTRFS_ADD_DELAYED_REF nodes to this ref_add_list. */ struct list_head ref_add_list; - struct rb_node href_node; - struct btrfs_delayed_extent_op *extent_op; /* |