diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fscache.h | 52 |
1 files changed, 47 insertions, 5 deletions
diff --git a/include/linux/fscache.h b/include/linux/fscache.h index 245b48646efa..6d8ee466e0a0 100644 --- a/include/linux/fscache.h +++ b/include/linux/fscache.h @@ -184,6 +184,24 @@ extern struct fscache_cookie *__fscache_acquire_cookie( void *); extern void __fscache_relinquish_cookie(struct fscache_cookie *, int); extern void __fscache_update_cookie(struct fscache_cookie *); +extern int __fscache_attr_changed(struct fscache_cookie *); +extern int __fscache_read_or_alloc_page(struct fscache_cookie *, + struct page *, + fscache_rw_complete_t, + void *, + gfp_t); +extern int __fscache_read_or_alloc_pages(struct fscache_cookie *, + struct address_space *, + struct list_head *, + unsigned *, + fscache_rw_complete_t, + void *, + gfp_t); +extern int __fscache_alloc_page(struct fscache_cookie *, struct page *, gfp_t); +extern int __fscache_write_page(struct fscache_cookie *, struct page *, gfp_t); +extern void __fscache_uncache_page(struct fscache_cookie *, struct page *); +extern bool __fscache_check_page_write(struct fscache_cookie *, struct page *); +extern void __fscache_wait_on_page_write(struct fscache_cookie *, struct page *); /** * fscache_register_netfs - Register a filesystem as desiring caching services @@ -361,7 +379,10 @@ void fscache_unpin_cookie(struct fscache_cookie *cookie) static inline int fscache_attr_changed(struct fscache_cookie *cookie) { - return -ENOBUFS; + if (fscache_cookie_valid(cookie)) + return __fscache_attr_changed(cookie); + else + return -ENOBUFS; } /** @@ -418,7 +439,11 @@ int fscache_read_or_alloc_page(struct fscache_cookie *cookie, void *context, gfp_t gfp) { - return -ENOBUFS; + if (fscache_cookie_valid(cookie)) + return __fscache_read_or_alloc_page(cookie, page, end_io_func, + context, gfp); + else + return -ENOBUFS; } /** @@ -464,7 +489,12 @@ int fscache_read_or_alloc_pages(struct fscache_cookie *cookie, void *context, gfp_t gfp) { - return -ENOBUFS; + if (fscache_cookie_valid(cookie)) + return __fscache_read_or_alloc_pages(cookie, mapping, pages, + nr_pages, end_io_func, + context, gfp); + else + return -ENOBUFS; } /** @@ -490,7 +520,10 @@ int fscache_alloc_page(struct fscache_cookie *cookie, struct page *page, gfp_t gfp) { - return -ENOBUFS; + if (fscache_cookie_valid(cookie)) + return __fscache_alloc_page(cookie, page, gfp); + else + return -ENOBUFS; } /** @@ -516,7 +549,10 @@ int fscache_write_page(struct fscache_cookie *cookie, struct page *page, gfp_t gfp) { - return -ENOBUFS; + if (fscache_cookie_valid(cookie)) + return __fscache_write_page(cookie, page, gfp); + else + return -ENOBUFS; } /** @@ -537,6 +573,8 @@ static inline void fscache_uncache_page(struct fscache_cookie *cookie, struct page *page) { + if (fscache_cookie_valid(cookie)) + __fscache_uncache_page(cookie, page); } /** @@ -553,6 +591,8 @@ static inline bool fscache_check_page_write(struct fscache_cookie *cookie, struct page *page) { + if (fscache_cookie_valid(cookie)) + return __fscache_check_page_write(cookie, page); return false; } @@ -571,6 +611,8 @@ static inline void fscache_wait_on_page_write(struct fscache_cookie *cookie, struct page *page) { + if (fscache_cookie_valid(cookie)) + __fscache_wait_on_page_write(cookie, page); } #endif /* _LINUX_FSCACHE_H */ |