From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756602AbbCSROL (ORCPT ); Thu, 19 Mar 2015 13:14:11 -0400 Received: from mga11.intel.com ([192.55.52.93]:33172 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752044AbbCSRKq (ORCPT ); Thu, 19 Mar 2015 13:10:46 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.11,430,1422950400"; d="scan'208";a="682592860" From: "Kirill A. Shutemov" To: Andrew Morton , Andrea Arcangeli , Hugh Dickins Cc: 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 , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Kirill A. Shutemov" Subject: [PATCH 08/16] page-flags: define behavior of Xen-related flags on compound pages Date: Thu, 19 Mar 2015 19:08:14 +0200 Message-Id: <1426784902-125149-9-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1426784902-125149-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1426784902-125149-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PG_pinned and PG_savepinned are about page table's pages which are never compound. I'm not so sure about PG_foreign, but it seems we shouldn't see compound pages there too. Let's use NO_COMPOUND for all of them. Signed-off-by: Kirill A. Shutemov --- include/linux/page-flags.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index d41c63b566b8..19373c98d08a 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -282,9 +282,12 @@ PAGEFLAG(Active, active, HEAD) __CLEARPAGEFLAG(Active, active, HEAD) __PAGEFLAG(Slab, slab, NO_TAIL) __PAGEFLAG(SlobFree, slob_free, NO_TAIL) PAGEFLAG(Checked, checked, NO_COMPOUND) /* Used by some filesystems */ -PAGEFLAG(Pinned, pinned, ANY) TESTSCFLAG(Pinned, pinned, ANY) /* Xen */ -PAGEFLAG(SavePinned, savepinned, ANY); /* Xen */ -PAGEFLAG(Foreign, foreign, ANY); /* Xen */ + +/* Xen */ +PAGEFLAG(Pinned, pinned, NO_COMPOUND) TESTSCFLAG(Pinned, pinned, NO_COMPOUND) +PAGEFLAG(SavePinned, savepinned, NO_COMPOUND) +PAGEFLAG(Foreign, foreign, NO_COMPOUND) + PAGEFLAG(Reserved, reserved, ANY) __CLEARPAGEFLAG(Reserved, reserved, ANY) PAGEFLAG(SwapBacked, swapbacked, ANY) __CLEARPAGEFLAG(SwapBacked, swapbacked, ANY) -- 2.1.4