From 059d8442ea77dd995c7ec075c6a6cca527b1c244 Mon Sep 17 00:00:00 2001 From: Huang Shijie <sjhuang@iluvatar.ai> Date: Mon, 13 May 2019 17:21:07 -0700 Subject: [PATCH] mm/rmap.c: use the pra.mapcount to do the check We have the pra.mapcount already, and there is no need to call the page_mapped() which may do some complicated computing for compound page. Link: http://lkml.kernel.org/r/20190404054828.2731-1-sjhuang@iluvatar.ai Signed-off-by: Huang Shijie <sjhuang@iluvatar.ai> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Rik van Riel <riel@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- mm/rmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/rmap.c b/mm/rmap.c index 0cbed70700ed..e5dfe2ae6b0d 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -850,7 +850,7 @@ int page_referenced(struct page *page, }; *vm_flags = 0; - if (!page_mapped(page)) + if (!pra.mapcount) return 0; if (!page_rmapping(page))