diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/linux/fscache.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/linux/fscache.h b/include/linux/fscache.h index b195c2e1ef6a..245b48646efa 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h | |||
@@ -178,6 +178,13 @@ extern void __fscache_unregister_netfs(struct fscache_netfs *); | |||
178 | extern struct fscache_cache_tag *__fscache_lookup_cache_tag(const char *); | 178 | extern struct fscache_cache_tag *__fscache_lookup_cache_tag(const char *); |
179 | extern void __fscache_release_cache_tag(struct fscache_cache_tag *); | 179 | extern void __fscache_release_cache_tag(struct fscache_cache_tag *); |
180 | 180 | ||
181 | extern struct fscache_cookie *__fscache_acquire_cookie( | ||
182 | struct fscache_cookie *, | ||
183 | const struct fscache_cookie_def *, | ||
184 | void *); | ||
185 | extern void __fscache_relinquish_cookie(struct fscache_cookie *, int); | ||
186 | extern void __fscache_update_cookie(struct fscache_cookie *); | ||
187 | |||
181 | /** | 188 | /** |
182 | * fscache_register_netfs - Register a filesystem as desiring caching services | 189 | * fscache_register_netfs - Register a filesystem as desiring caching services |
183 | * @netfs: The description of the filesystem | 190 | * @netfs: The description of the filesystem |
@@ -269,7 +276,10 @@ struct fscache_cookie *fscache_acquire_cookie( | |||
269 | const struct fscache_cookie_def *def, | 276 | const struct fscache_cookie_def *def, |
270 | void *netfs_data) | 277 | void *netfs_data) |
271 | { | 278 | { |
272 | return NULL; | 279 | if (fscache_cookie_valid(parent)) |
280 | return __fscache_acquire_cookie(parent, def, netfs_data); | ||
281 | else | ||
282 | return NULL; | ||
273 | } | 283 | } |
274 | 284 | ||
275 | /** | 285 | /** |
@@ -287,6 +297,8 @@ struct fscache_cookie *fscache_acquire_cookie( | |||
287 | static inline | 297 | static inline |
288 | void fscache_relinquish_cookie(struct fscache_cookie *cookie, int retire) | 298 | void fscache_relinquish_cookie(struct fscache_cookie *cookie, int retire) |
289 | { | 299 | { |
300 | if (fscache_cookie_valid(cookie)) | ||
301 | __fscache_relinquish_cookie(cookie, retire); | ||
290 | } | 302 | } |
291 | 303 | ||
292 | /** | 304 | /** |
@@ -302,6 +314,8 @@ void fscache_relinquish_cookie(struct fscache_cookie *cookie, int retire) | |||
302 | static inline | 314 | static inline |
303 | void fscache_update_cookie(struct fscache_cookie *cookie) | 315 | void fscache_update_cookie(struct fscache_cookie *cookie) |
304 | { | 316 | { |
317 | if (fscache_cookie_valid(cookie)) | ||
318 | __fscache_update_cookie(cookie); | ||
305 | } | 319 | } |
306 | 320 | ||
307 | /** | 321 | /** |