mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 00:01:35 +00:00
0072b1389c
We don't want these to be global functions. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
70 lines
1.3 KiB
C
70 lines
1.3 KiB
C
/*
|
|
* dcookies.h
|
|
*
|
|
* Persistent cookie-path mappings
|
|
*
|
|
* Copyright 2002 John Levon <levon@movementarian.org>
|
|
*/
|
|
|
|
#ifndef DCOOKIES_H
|
|
#define DCOOKIES_H
|
|
|
|
#include <linux/config.h>
|
|
|
|
#ifdef CONFIG_PROFILING
|
|
|
|
#include <linux/types.h>
|
|
|
|
struct dcookie_user;
|
|
|
|
/**
|
|
* dcookie_register - register a user of dcookies
|
|
*
|
|
* Register as a dcookie user. Returns %NULL on failure.
|
|
*/
|
|
struct dcookie_user * dcookie_register(void);
|
|
|
|
/**
|
|
* dcookie_unregister - unregister a user of dcookies
|
|
*
|
|
* Unregister as a dcookie user. This may invalidate
|
|
* any dcookie values returned from get_dcookie().
|
|
*/
|
|
void dcookie_unregister(struct dcookie_user * user);
|
|
|
|
/**
|
|
* get_dcookie - acquire a dcookie
|
|
*
|
|
* Convert the given dentry/vfsmount pair into
|
|
* a cookie value.
|
|
*
|
|
* Returns -EINVAL if no living task has registered as a
|
|
* dcookie user.
|
|
*
|
|
* Returns 0 on success, with *cookie filled in
|
|
*/
|
|
int get_dcookie(struct dentry * dentry, struct vfsmount * vfsmnt,
|
|
unsigned long * cookie);
|
|
|
|
#else
|
|
|
|
static inline struct dcookie_user * dcookie_register(void)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline void dcookie_unregister(struct dcookie_user * user)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static inline int get_dcookie(struct dentry * dentry,
|
|
struct vfsmount * vfsmnt, unsigned long * cookie)
|
|
{
|
|
return -ENOSYS;
|
|
}
|
|
|
|
#endif /* CONFIG_PROFILING */
|
|
|
|
#endif /* DCOOKIES_H */
|