include/linux/fscache-cache.h

33  * Cache cookie.
61 	/* Look up a cookie in the cache */
62 	bool (*lookup_cookie)(struct fscache_cookie *cookie);
64 	/* Withdraw an object without any cookie access counts held */
65 	void (*withdraw_cookie)(struct fscache_cookie *cookie);
72 	bool (*invalidate_cookie)(struct fscache_cookie *cookie);
79 	void (*prepare_to_write)(struct fscache_cookie *cookie);
96 extern void fscache_withdraw_cookie(struct fscache_cookie *cookie);
101 				      struct fscache_cookie *cookie,
104 extern struct fscache_cookie *fscache_get_cookie(struct fscache_cookie *cookie,
106 extern void fscache_put_cookie(struct fscache_cookie *cookie,
108 extern void fscache_end_cookie_access(struct fscache_cookie *cookie,
110 extern void fscache_cookie_lookup_negative(struct fscache_cookie *cookie);
111 extern void fscache_resume_after_invalidation(struct fscache_cookie *cookie);
112 extern void fscache_caching_failed(struct fscache_cookie *cookie);
117  * fscache_cookie_state - Read the state of a cookie
118  * @cookie: The cookie to query
120  * Get the state of a cookie, imposing an ordering between the cookie contents
124 enum fscache_cookie_state fscache_cookie_state(struct fscache_cookie *cookie)
126 	return smp_load_acquire(&cookie->state);
130  * fscache_get_key - Get a pointer to the cookie key
131  * @cookie: The cookie to query
133  * Return a pointer to the where a cookie's key is stored.
135 static inline void *fscache_get_key(struct fscache_cookie *cookie)
137 	if (cookie->key_len <= sizeof(cookie->inline_key))
138 		return cookie->inline_key;
140 		return cookie->key;
165  * longer be accessed.  After this point, the cache cookie may be destroyed.