From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f177.google.com (mail-pd0-f177.google.com [209.85.192.177]) by kanga.kvack.org (Postfix) with ESMTP id 74A4B6B0071 for ; Thu, 19 Mar 2015 13:08:41 -0400 (EDT) Received: by pdbop1 with SMTP id op1so81663426pdb.2 for ; Thu, 19 Mar 2015 10:08:41 -0700 (PDT) Received: from mga09.intel.com (mga09.intel.com. [134.134.136.24]) by mx.google.com with ESMTP id fe5si4251976pdb.39.2015.03.19.10.08.38 for ; Thu, 19 Mar 2015 10:08:38 -0700 (PDT) From: "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> 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: owner-linux-mm@kvack.org List-ID: 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" 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 -- 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