X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=mm%2Fvmscan.c;h=3b5860294bb6654a7b6765a327cef83a9952a29d;hb=b457d151613873ea035de0c7348abc3d4b6efd34;hp=412d7872fc75af2e33444470951029db21b95b6d;hpb=e0f79b8f1f3394bb344b7b83d6f121ac2af327de;p=linux-2.6-omap-h63xx.git

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 412d7872fc7..3b5860294bb 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -732,7 +732,14 @@ static unsigned long shrink_page_list(struct list_head *page_list,
 		if (!mapping || !__remove_mapping(mapping, page))
 			goto keep_locked;
 
-		unlock_page(page);
+		/*
+		 * At this point, we have no other references and there is
+		 * no way to pick any more up (removed from LRU, removed
+		 * from pagecache). Can use non-atomic bitops now (and
+		 * we obviously don't have to worry about waking up a process
+		 * waiting on the page lock, because there are no references.
+		 */
+		__clear_page_locked(page);
 free_it:
 		nr_reclaimed++;
 		if (!pagevec_add(&freed_pvec, page)) {