mm/page-writeback.c: fix __set_page_dirty_no_writeback() return value
authorBob Liu <lliubbo@gmail.com>
Thu, 13 Jan 2011 23:45:49 +0000 (15:45 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 14 Jan 2011 01:32:32 +0000 (17:32 -0800)
__set_page_dirty_no_writeback() should return true if it actually
transitioned the page from a clean to dirty state although it seems nobody
uses its return value at present.

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Acked-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/page-writeback.c

index b5d8a1f..28763b8 100644 (file)
@@ -1103,7 +1103,7 @@ EXPORT_SYMBOL(write_one_page);
 int __set_page_dirty_no_writeback(struct page *page)
 {
        if (!PageDirty(page))
-               SetPageDirty(page);
+               return !TestSetPageDirty(page);
        return 0;
 }