diff options
Diffstat (limited to 'fs/kernfs')
| -rw-r--r-- | fs/kernfs/dir.c | 9 | ||||
| -rw-r--r-- | fs/kernfs/kernfs-internal.h | 18 |
2 files changed, 27 insertions, 0 deletions
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c index e6d9772ddb4c..61a8edc4ba8b 100644 --- a/fs/kernfs/dir.c +++ b/fs/kernfs/dir.c @@ -971,6 +971,15 @@ void kernfs_destroy_root(struct kernfs_root *root) } /** + * kernfs_root_to_node - return the kernfs_node associated with a kernfs_root + * @root: root to use to lookup + */ +struct kernfs_node *kernfs_root_to_node(struct kernfs_root *root) +{ + return root->kn; +} + +/** * kernfs_create_dir_ns - create a directory * @parent: parent in which to create a new directory * @name: name of the new directory diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h index fc3b32f82a60..eeaa779b929c 100644 --- a/fs/kernfs/kernfs-internal.h +++ b/fs/kernfs/kernfs-internal.h @@ -31,6 +31,24 @@ struct kernfs_iattrs { atomic_t user_xattr_size; }; +struct kernfs_root { + /* published fields */ + struct kernfs_node *kn; + unsigned int flags; /* KERNFS_ROOT_* flags */ + + /* private fields, do not use outside kernfs proper */ + struct idr ino_idr; + u32 last_id_lowbits; + u32 id_highbits; + struct kernfs_syscall_ops *syscall_ops; + + /* list of kernfs_super_info of this root, protected by kernfs_rwsem */ + struct list_head supers; + + wait_queue_head_t deactivate_waitq; + struct rw_semaphore kernfs_rwsem; +}; + /* +1 to avoid triggering overflow warning when negating it */ #define KN_DEACTIVATED_BIAS (INT_MIN + 1) |