From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f48.google.com (mail-pa0-f48.google.com [209.85.220.48]) by kanga.kvack.org (Postfix) with ESMTP id 6EEAD6B026D for ; Thu, 24 Sep 2015 10:51:20 -0400 (EDT) Received: by pacex6 with SMTP id ex6so75183145pac.0 for ; Thu, 24 Sep 2015 07:51:20 -0700 (PDT) Received: from mga09.intel.com (mga09.intel.com. [134.134.136.24]) by mx.google.com with ESMTP id rn14si4045584pab.184.2015.09.24.07.51.19 for ; Thu, 24 Sep 2015 07:51:19 -0700 (PDT) From: "Kirill A. Shutemov" Subject: [PATCH 10/16] page-flags: define PG_swapbacked behavior on compound pages Date: Thu, 24 Sep 2015 17:50:58 +0300 Message-Id: <1443106264-78075-11-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1443106264-78075-1-git-send-email-kirill.shutemov@linux.intel.com> References: <20150921153509.fef7ecdf313ef74307c43b65@linux-foundation.org> <1443106264-78075-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton Cc: Andrea Arcangeli , Hugh Dickins , Dave Hansen , Mel Gorman , Rik van Riel , Vlastimil Babka , Christoph Lameter , Naoya Horiguchi , Steve Capper , "Aneesh Kumar K.V" , Johannes Weiner , Michal Hocko , Jerome Marchand , Sasha Levin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Kirill A. Shutemov" PG_swapbacked is used for transparent huge pages. For head pages only. Let's use PF_NO_TAIL policy. Signed-off-by: Kirill A. Shutemov --- include/linux/page-flags.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 5ba8130fffb5..a31d682caeb2 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -266,9 +266,9 @@ PAGEFLAG(Foreign, foreign, PF_NO_COMPOUND); PAGEFLAG(Reserved, reserved, PF_NO_COMPOUND) __CLEARPAGEFLAG(Reserved, reserved, PF_NO_COMPOUND) -PAGEFLAG(SwapBacked, swapbacked, PF_ANY) - __CLEARPAGEFLAG(SwapBacked, swapbacked, PF_ANY) - __SETPAGEFLAG(SwapBacked, swapbacked, PF_ANY) +PAGEFLAG(SwapBacked, swapbacked, PF_NO_TAIL) + __CLEARPAGEFLAG(SwapBacked, swapbacked, PF_NO_TAIL) + __SETPAGEFLAG(SwapBacked, swapbacked, PF_NO_TAIL) /* * Private page markings that may be used by the filesystem that owns the page -- 2.5.1 -- 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