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Commit bb09c863 authored by Tejun Heo's avatar Tejun Heo
Browse files

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: default avatarTejun Heo <tj@kernel.org>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Serge Hallyn <serge.hallyn@ubuntu.com>
parent 3abb1d90

fs/kernfs/dir.c

+0 −23
Original line number Diff line number Diff line
@@ -179,29 +179,6 @@ int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen) 
	return ret;

}



/**

 * 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

include/linux/kernfs.h

+0 −4
Original line number Diff line number Diff line
@@ -269,7 +269,6 @@ 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);

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 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 int kernfs_path_from_node(struct kernfs_node *root_kn,

					struct kernfs_node *kn,

					char *buf, size_t buflen)