The lru_deactivate_fn should not move page which in on unevictable lru into inactive list. Otherwise, we can meet BUG when we use isolate_lru_pages as __isolate_lru_page could return -EINVAL. It's really BUG and let's fix it. Reported-by: Ying Han <yinghan@xxxxxxxxxx> Tested-by: Ying Han <yinghan@xxxxxxxxxx> Signed-off-by: Minchan Kim <minchan.kim@xxxxxxxxx> --- mm/swap.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/mm/swap.c b/mm/swap.c index a83ec5a..2e9656d 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -429,6 +429,9 @@ static void lru_deactivate_fn(struct page *page, void *arg) if (!PageLRU(page)) return; + if (PageUnevictable(page)) + return; + /* Some processes are using the page */ if (page_mapped(page)) return; -- 1.7.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>