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