diff options
Diffstat (limited to 'include/linux/pagemap.h')
| -rw-r--r-- | include/linux/pagemap.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index 43390b2e2ef4..bfc986131fe6 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -74,9 +74,15 @@ static inline void ___add_to_page_cache(struct page *page, inc_page_state(nr_pagecache); } -extern void FASTCALL(lock_page(struct page *page)); +extern void FASTCALL(__lock_page(struct page *page)); extern void FASTCALL(unlock_page(struct page *page)); +static inline void lock_page(struct page *page) +{ + if (TestSetPageLocked(page)) + __lock_page(page); +} + /* * This is exported only for wait_on_page_locked/wait_on_page_writeback. * Never use this directly! |