diff options
Diffstat (limited to 'include/linux/pagemap.h')
| -rw-r--r-- | include/linux/pagemap.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index db8a410ae9e1..4b62a105622b 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -157,6 +157,7 @@ static inline pgoff_t linear_page_index(struct vm_area_struct *vma, } extern void FASTCALL(__lock_page(struct page *page)); +extern int FASTCALL(__lock_page_killable(struct page *page)); extern void FASTCALL(__lock_page_nosync(struct page *page)); extern void FASTCALL(unlock_page(struct page *page)); @@ -171,6 +172,19 @@ static inline void lock_page(struct page *page) } /* + * lock_page_killable is like lock_page but can be interrupted by fatal + * signals. It returns 0 if it locked the page and -EINTR if it was + * killed while waiting. + */ +static inline int lock_page_killable(struct page *page) +{ + might_sleep(); + if (TestSetPageLocked(page)) + return __lock_page_killable(page); + return 0; +} + +/* * lock_page_nosync should only be used if we can't pin the page's inode. * Doesn't play quite so well with block device plugging. */ |