Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

[mirror_ubuntu-focal-kernel.git] / include / linux / kernfs.h

diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index e6b2f7db9c0ceb7873aee3fc4a7666452d8f9b8a..5d4e9c4b821ddd33da4622be3c4e8f79ab1bf645 100644 (file)
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -45,6 +45,7 @@ enum kernfs_node_flag {
        KERNFS_LOCKDEP          = 0x0100,
        KERNFS_SUICIDAL         = 0x0400,
        KERNFS_SUICIDED         = 0x0800,
+       KERNFS_EMPTY_DIR        = 0x1000,
 };
 
 /* @flags for kernfs_create_root() */
@@ -265,6 +266,7 @@ static inline bool kernfs_ns_enabled(struct kernfs_node *kn)
 }
 
 int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen);
+size_t kernfs_path_len(struct kernfs_node *kn);
 char * __must_check kernfs_path(struct kernfs_node *kn, char *buf,
                                size_t buflen);
 void pr_cont_kernfs_name(struct kernfs_node *kn);
@@ -286,6 +288,8 @@ void kernfs_destroy_root(struct kernfs_root *root);
 struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
                                         const char *name, umode_t mode,
                                         void *priv, const void *ns);
+struct kernfs_node *kernfs_create_empty_dir(struct kernfs_node *parent,
+                                           const char *name);
 struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
                                         const char *name,
                                         umode_t mode, loff_t size,
@@ -329,6 +333,9 @@ static inline bool kernfs_ns_enabled(struct kernfs_node *kn)
 static inline int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen)
 { return -ENOSYS; }
 
+static inline size_t kernfs_path_len(struct kernfs_node *kn)
+{ return 0; }
+
 static inline char * __must_check kernfs_path(struct kernfs_node *kn, char *buf,
                                              size_t buflen)
 { return NULL; }