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From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
To: Andrew Morton <akpm@linux-foundation.org>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>, Mel Gorman <mgorman@suse.de>,
	Rik van Riel <riel@redhat.com>, Vlastimil Babka <vbabka@suse.cz>,
	Christoph Lameter <cl@gentwo.org>,
	Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
	Steve Capper <steve.capper@linaro.org>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	Michal Hocko <mhocko@suse.cz>,
	Jerome Marchand <jmarchan@redhat.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCH 10/16] page-flags: define PG_swapbacked behavior on compound pages
Date: Thu, 19 Mar 2015 19:08:16 +0200	[thread overview]
Message-ID: <1426784902-125149-11-git-send-email-kirill.shutemov@linux.intel.com> (raw)
In-Reply-To: <1426784902-125149-1-git-send-email-kirill.shutemov@linux.intel.com>

PG_swapbacked is used for transparent huge pages. For head pages only.
Let's use NO_TAIL policy.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
 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 be691551896b..d1d08508984d 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -290,9 +290,9 @@ PAGEFLAG(Foreign, foreign, NO_COMPOUND)
 
 PAGEFLAG(Reserved, reserved, NO_COMPOUND)
 	__CLEARPAGEFLAG(Reserved, reserved, NO_COMPOUND)
-PAGEFLAG(SwapBacked, swapbacked, ANY)
-	__CLEARPAGEFLAG(SwapBacked, swapbacked, ANY)
-	__SETPAGEFLAG(SwapBacked, swapbacked, ANY)
+PAGEFLAG(SwapBacked, swapbacked, NO_TAIL)
+	__CLEARPAGEFLAG(SwapBacked, swapbacked, NO_TAIL)
+	__SETPAGEFLAG(SwapBacked, swapbacked, NO_TAIL)
 
 /*
  * Private page markings that may be used by the filesystem that owns the page
-- 
2.1.4

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  parent reply	other threads:[~2015-03-19 17:10 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-19 17:08 [PATCH 00/16] Sanitize usage of ->flags and ->mapping for tail pages Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 01/16] mm: consolidate all page-flags helpers in <linux/page-flags.h> Kirill A. Shutemov
2015-03-23  0:10   ` Hugh Dickins
2015-03-19 17:08 ` [PATCH 02/16] page-flags: trivial cleanup for PageTrans* helpers Kirill A. Shutemov
2015-03-23  0:12   ` Hugh Dickins
2015-03-19 17:08 ` [PATCH 03/16] page-flags: introduce page flags policies wrt compound pages Kirill A. Shutemov
2015-03-20 20:35   ` Andrew Morton
2015-03-20 21:34     ` Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 04/16] page-flags: define PG_locked behavior on " Kirill A. Shutemov
2015-03-27 15:11   ` Mateusz Krawczuk
2015-03-27 15:13   ` Mateusz Krawczuk
2015-03-27 16:37     ` Kirill A. Shutemov
2015-07-15 20:20   ` Christoph Lameter
2015-08-06  4:15   ` page-flags behavior on compound pages: a worry Hugh Dickins
2015-08-06 15:33     ` Kirill A. Shutemov
2015-08-06 19:24       ` Hugh Dickins
2015-08-06 20:45         ` Christoph Lameter
2015-08-07 14:50           ` Kirill A. Shutemov
2015-08-07 15:28             ` Christoph Lameter
2015-08-10 11:09               ` Kirill A. Shutemov
2015-08-10 13:50                 ` Christoph Lameter
2015-08-07 14:49         ` Kirill A. Shutemov
2015-08-13  5:10           ` Hugh Dickins
2015-08-12 14:35         ` Kirill A. Shutemov
2015-08-12 14:47           ` Vlastimil Babka
2015-08-12 21:16           ` Andrew Morton
2015-08-12 22:21             ` Kirill A. Shutemov
2015-08-13  4:12               ` Hugh Dickins
2015-03-19 17:08 ` [PATCH 05/16] page-flags: define behavior of FS/IO-related flags on compound pages Kirill A. Shutemov
2015-03-19 18:29   ` Dave Hansen
2015-03-19 20:02     ` Kirill A. Shutemov
2015-03-23  0:02       ` Hugh Dickins
2015-03-23 12:17         ` Kirill A. Shutemov
2015-03-24 22:54           ` Hugh Dickins
2015-03-25 10:23             ` Kirill A. Shutemov
2015-03-25 18:56               ` Hugh Dickins
2015-03-19 17:08 ` [PATCH 06/16] page-flags: define behavior of LRU-related " Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 07/16] page-flags: define behavior SL*B-related " Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 08/16] page-flags: define behavior of Xen-related " Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 09/16] page-flags: define PG_reserved behavior " Kirill A. Shutemov
2020-01-31 15:24   ` Chris Wilson
2020-02-03 15:18     ` Kirill A. Shutemov
2020-02-03 15:24       ` Chris Wilson
2020-02-03 17:10         ` David Hildenbrand
2020-02-03 17:29       ` Christoph Hellwig
2015-03-19 17:08 ` Kirill A. Shutemov [this message]
2015-03-19 17:08 ` [PATCH 11/16] page-flags: define PG_swapcache " Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 12/16] page-flags: define PG_mlocked " Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 13/16] page-flags: define PG_uncached " Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 14/16] page-flags: define PG_uptodate " Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 15/16] page-flags: look on head page if the flag is encoded in page->mapping Kirill A. Shutemov
2015-03-19 17:08 ` [PATCH 16/16] mm: sanitize page->mapping for tail pages Kirill A. Shutemov
2015-03-23  0:28 ` [PATCH 00/16] Sanitize usage of ->flags and ->mapping " Hugh Dickins
2015-03-23 10:04   ` Kirill A. Shutemov
2015-03-24 23:42     ` Hugh Dickins
2015-03-25 10:55       ` Kirill A. Shutemov
2015-03-24 17:39 ` Konstantin Khlebnikov
2015-03-24 20:04   ` Kirill A. Shutemov
2015-07-15 20:20 ` Christoph Lameter
2015-07-15 21:18   ` Kirill A. Shutemov
     [not found] <20150921153509.fef7ecdf313ef74307c43b65@linux-foundation.org>
2015-09-24 14:50 ` [PATCH 00/16] Refreshed page-flags patchset Kirill A. Shutemov
2015-09-24 14:50   ` [PATCH 10/16] page-flags: define PG_swapbacked behavior on compound pages Kirill A. Shutemov

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