diff options
Diffstat (limited to 'fs/btrfs/locking.h')
| -rw-r--r-- | fs/btrfs/locking.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/btrfs/locking.h b/fs/btrfs/locking.h index d715846c10b8..31f6d6405c1d 100644 --- a/fs/btrfs/locking.h +++ b/fs/btrfs/locking.h @@ -21,6 +21,7 @@ struct btrfs_path; void btrfs_tree_lock(struct extent_buffer *eb); void btrfs_tree_unlock(struct extent_buffer *eb); +void __btrfs_tree_read_lock(struct extent_buffer *eb, bool recurse); void btrfs_tree_read_lock(struct extent_buffer *eb); void btrfs_tree_read_unlock(struct extent_buffer *eb); void btrfs_tree_read_unlock_blocking(struct extent_buffer *eb); @@ -29,6 +30,14 @@ void btrfs_set_lock_blocking_write(struct extent_buffer *eb); int btrfs_try_tree_read_lock(struct extent_buffer *eb); int btrfs_try_tree_write_lock(struct extent_buffer *eb); int btrfs_tree_read_lock_atomic(struct extent_buffer *eb); +struct extent_buffer *btrfs_lock_root_node(struct btrfs_root *root); +struct extent_buffer *__btrfs_read_lock_root_node(struct btrfs_root *root, + bool recurse); + +static inline struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root) +{ + return __btrfs_read_lock_root_node(root, false); +} #ifdef CONFIG_BTRFS_DEBUG static inline void btrfs_assert_tree_locked(struct extent_buffer *eb) { |