CC: Andi Kleen Signed-off-by: Wu Fengguang --- mm/memory-failure.c | 2 ++ 1 file changed, 2 insertions(+) --- linux-mm.orig/mm/memory-failure.c 2009-11-30 11:11:25.000000000 +0800 +++ linux-mm/mm/memory-failure.c 2009-11-30 11:12:41.000000000 +0800 @@ -667,6 +667,8 @@ static int hwpoison_user_mappings(struct /* * Propagate the dirty bit from PTEs to struct page first, because we * need this to decide if we should kill or just drop the page. + * XXX: the dirty test could be racy: set_page_dirty() may not always + * be called inside page lock (it's recommended but not enforced). */ mapping = page_mapping(p); if (!PageDirty(p) && mapping && mapping_cap_writeback_dirty(mapping)) { -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org