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| author |   KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2011-05-24 17:11:29 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-25 08:39:08 -0700 |
| commit | f62e00cc3a00bfbd394a79fc22b334c31f91bd5f (patch) | |
| tree | 29e0a3ac793e4a5a15bbbe4b4945470a41e820e7 /mm/filemap.c | |
| parent | mm: per-node vmstat: show proper vmstats (diff) | |
| download | linux-dev-f62e00cc3a00bfbd394a79fc22b334c31f91bd5f.tar.xz linux-dev-f62e00cc3a00bfbd394a79fc22b334c31f91bd5f.zip | |
mm: introduce wait_on_page_locked_killable()
commit 2687a356 ("Add lock_page_killable") introduced killable
lock_page(). Similarly this patch introdues killable
wait_on_page_locked().
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/filemap.c')
| -rw-r--r-- | mm/filemap.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index c641edf553a9..dea8a38bb2bb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -562,6 +562,17 @@ void wait_on_page_bit(struct page *page, int bit_nr) } EXPORT_SYMBOL(wait_on_page_bit); +int wait_on_page_bit_killable(struct page *page, int bit_nr) +{ + DEFINE_WAIT_BIT(wait, &page->flags, bit_nr); + + if (!test_bit(bit_nr, &page->flags)) + return 0; + + return __wait_on_bit(page_waitqueue(page), &wait, + sleep_on_page_killable, TASK_KILLABLE); +} + /** * add_page_wait_queue - Add an arbitrary waiter to a page's wait queue * @page: Page defining the wait queue of interest |