kernfs: remove kernfs_path_len()
It doesn't have any in-kernel user and the same result can be obtained
from kernfs_path(@kn, NULL, 0). Remove it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Serge Hallyn <serge.hallyn@ubuntu.com>
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index 09242aa..6e7fd37 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -180,29 +180,6 @@
}
/**
- * kernfs_path_len - determine the length of the full path of a given node
- * @kn: kernfs_node of interest
- *
- * The returned length doesn't include the space for the terminating '\0'.
- */
-size_t kernfs_path_len(struct kernfs_node *kn)
-{
- size_t len = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&kernfs_rename_lock, flags);
-
- do {
- len += strlen(kn->name) + 1;
- kn = kn->parent;
- } while (kn && kn->parent);
-
- spin_unlock_irqrestore(&kernfs_rename_lock, flags);
-
- return len;
-}
-
-/**
* kernfs_path_from_node - build path of node @to relative to @from.
* @from: parent kernfs_node relative to which we need to build the path
* @to: kernfs_node of interest
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index 4a02b1b..7056238 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -269,7 +269,6 @@
}
int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen);
-size_t kernfs_path_len(struct kernfs_node *kn);
int kernfs_path_from_node(struct kernfs_node *root_kn, struct kernfs_node *kn,
char *buf, size_t buflen);
void pr_cont_kernfs_name(struct kernfs_node *kn);
@@ -340,9 +339,6 @@
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 int kernfs_path_from_node(struct kernfs_node *root_kn,
struct kernfs_node *kn,
char *buf, size_t buflen)