linux-kernel - [PATCH 0/4] thp: simplify freeze_page() and unfreeze

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Message-Id: <1454512459-94334-1-git-send-email-kirill.shutemov@linux.intel.com>
Date:	Wed,  3 Feb 2016 18:14:15 +0300
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Hugh Dickins <hughd@...gle.com>,
	Dave Hansen <dave.hansen@...el.com>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Vlastimil Babka <vbabka@...e.cz>,
	Christoph Lameter <cl@...two.org>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Steve Capper <steve.capper@...aro.org>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	Jerome Marchand <jmarchan@...hat.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: [PATCH 0/4] thp: simplify freeze_page() and unfreeze_page()

This patchset rewrites freeze_page() and unfreeze_page() using try_to_unmap()
and remove_migration_ptes(). Result is much simplier, but somewhat slower.
See the last patch for details.

I did quick sanity check. More testing is required.

Any comments?

Kirill A. Shutemov (4):
  rmap: introduce rmap_walk_locked()
  rmap: extend try_to_unmap() to be usable by split_huge_page()
  mm: make remove_migration_ptes() beyond mm/migration.c
  thp: rewrite freeze_page()/unfreeze_page() with generic rmap walkers

 include/linux/huge_mm.h |   7 ++
 include/linux/rmap.h    |   6 ++
 mm/huge_memory.c        | 219 ++++++------------------------------------------
 mm/migrate.c            |  13 +--
 mm/rmap.c               |  49 ++++++++---
 5 files changed, 83 insertions(+), 211 deletions(-)

-- 
2.7.0