diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2019-07-11 20:54:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 11:05:43 -0700 |
| commit | f445884562dd8bc51eb4136bd21f014403d1813d (patch) | |
| tree | cbf1bd9a8b00bb8251051f619ee90324db18e299 /include/linux/pagemap.h | |
| parent | 98ef2046f28b642ad35935972a173194ea58a21d (diff) | |
include/linux/pagemap.h: document trylock_page() return value
Cc: Henry Burns <henryburns@google.com>
Cc: Jonathan Adams <jwadams@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: Xidong Wang <wangxidong_97@163.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/pagemap.h')
| -rw-r--r-- | include/linux/pagemap.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index fe0b29bf2df7..6fd0d3aa492c 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -452,6 +452,9 @@ extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm, unsigned int flags); extern void unlock_page(struct page *page); +/* + * Return true if the page was successfully locked + */ static inline int trylock_page(struct page *page) { page = compound_head(page); |