From 8bcb74de764aaa261d6af3ce5ac723e435f00ff4 Mon Sep 17 00:00:00 2001 From: Naoya Horiguchi Date: Wed, 3 May 2017 14:56:19 -0700 Subject: mm: hwpoison: call shake_page() unconditionally shake_page() is called before going into core error handling code in order to ensure that the error page is flushed from lru_cache lists where pages stay during transferring among LRU lists. But currently it's not fully functional because when the page is linked to lru_cache by calling activate_page(), its PageLRU flag is set and shake_page() is skipped. The result is to fail error handling with "still referenced by 1 users" message. When the page is linked to lru_cache by isolate_lru_page(), its PageLRU is clear, so that's fine. This patch makes shake_page() unconditionally called to avoild the failure. Fixes: 23a003bfd23ea9ea0b7756b920e51f64b284b468 ("mm/madvise: pass return code of memory_failure() to userspace") Link: http://lkml.kernel.org/r/20170417055948.GM31394@yexl-desktop Link: http://lkml.kernel.org/r/1493197841-23986-2-git-send-email-n-horiguchi@ah.jp.nec.com Signed-off-by: Naoya Horiguchi Reported-by: kernel test robot Cc: Xiaolong Ye Cc: Chen Gong Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/hwpoison-inject.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'mm/hwpoison-inject.c') diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index 9d26fd9fefe4..356df057a2a8 100644 --- a/mm/hwpoison-inject.c +++ b/mm/hwpoison-inject.c @@ -34,8 +34,7 @@ static int hwpoison_inject(void *data, u64 val) if (!hwpoison_filter_enable) goto inject; - if (!PageLRU(hpage) && !PageHuge(p)) - shake_page(hpage, 0); + shake_page(hpage, 0); /* * This implies unable to support non-LRU pages. */ -- cgit v1.2.3-55-g7522