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OpenCloudOS-Kernel
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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>
This commit is contained in:
Tejun Heo 2016-08-10 11:23:44 -04:00
parent 3abb1d90f5
commit bb09c8634b
2 changed files with 0 additions and 27 deletions
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23
fs/kernfs/dir.c
View File

@ -179,29 +179,6 @@ int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen)
return ret; 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. * 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 * @from: parent kernfs_node relative to which we need to build the path

4
include/linux/kernfs.h
View File

@ -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); 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, int kernfs_path_from_node(struct kernfs_node *root_kn, struct kernfs_node *kn,
char *buf, size_t buflen); char *buf, size_t buflen);
void pr_cont_kernfs_name(struct kernfs_node *kn); 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) static inline int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen)
{ return -ENOSYS; } { 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, static inline int kernfs_path_from_node(struct kernfs_node *root_kn,
struct kernfs_node *kn, struct kernfs_node *kn,
char *buf, size_t buflen) char *buf, size_t buflen)