From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Jerome Marchand <jmarchan@redhat.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Hugh Dickins <hughd@google.com>,
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>,
Sasha Levin <sasha.levin@oracle.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCHv5 16/28] mm, thp: remove compound_lock
Date: Thu, 30 Apr 2015 14:58:28 +0300 [thread overview]
Message-ID: <20150430115828.GB15874@node.dhcp.inet.fi> (raw)
In-Reply-To: <5541029C.60207@redhat.com>
On Wed, Apr 29, 2015 at 06:11:08PM +0200, Jerome Marchand wrote:
> On 04/23/2015 11:03 PM, Kirill A. Shutemov wrote:
> > We are going to use migration entries to stabilize page counts. It means
>
> By "stabilize" do you mean "protect" from concurrent access? I've seen
> that you use the same term in seemingly the same sense several times (at
> least in patches 15, 16, 23, 24 and 28).
Here it's protect from concurrent change of page's ->_count or
->_mapcount.
In some context I could you "stabilize" as "protect from concurrent
split".
--
Kirill A. Shutemov
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next prev parent reply other threads:[~2015-04-30 11:58 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-23 21:03 [PATCHv5 00/28] THP refcounting redesign Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 01/28] mm, proc: adjust PSS calculation Kirill A. Shutemov
2015-04-29 15:49 ` Jerome Marchand
2015-05-14 14:12 ` Vlastimil Babka
2015-05-15 10:56 ` Kirill A. Shutemov
2015-05-15 11:33 ` Vlastimil Babka
2015-05-15 11:43 ` Kirill A. Shutemov
2015-05-15 12:37 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 02/28] rmap: add argument to charge compound page Kirill A. Shutemov
2015-04-29 15:53 ` Jerome Marchand
2015-04-30 11:52 ` Kirill A. Shutemov
2015-05-14 16:07 ` Vlastimil Babka
2015-05-15 11:14 ` Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 03/28] memcg: adjust to support new THP refcounting Kirill A. Shutemov
2015-05-15 7:44 ` Vlastimil Babka
2015-05-15 11:18 ` Kirill A. Shutemov
2015-05-15 14:57 ` Dave Hansen
2015-05-16 23:17 ` Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 04/28] mm, thp: adjust conditions when we can reuse the page on WP fault Kirill A. Shutemov
2015-04-29 15:54 ` Jerome Marchand
2015-05-15 9:15 ` Vlastimil Babka
2015-05-15 11:21 ` Kirill A. Shutemov
2015-05-15 11:35 ` Vlastimil Babka
2015-05-15 13:29 ` Kirill A. Shutemov
2015-05-19 13:00 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 05/28] mm: adjust FOLL_SPLIT for new refcounting Kirill A. Shutemov
2015-05-15 11:05 ` Vlastimil Babka
2015-05-15 11:36 ` Kirill A. Shutemov
2015-05-15 12:01 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 06/28] mm: handle PTE-mapped tail pages in gerneric fast gup implementaiton Kirill A. Shutemov
2015-04-29 15:56 ` Jerome Marchand
2015-05-15 12:46 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 07/28] thp, mlock: do not allow huge pages in mlocked area Kirill A. Shutemov
2015-04-29 15:58 ` Jerome Marchand
2015-05-15 12:56 ` Vlastimil Babka
2015-05-15 13:41 ` Kirill A. Shutemov
2015-05-19 14:37 ` Vlastimil Babka
2015-05-20 12:10 ` Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 08/28] khugepaged: ignore pmd tables with THP mapped with ptes Kirill A. Shutemov
2015-04-29 15:59 ` Jerome Marchand
2015-05-15 12:59 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 09/28] thp: rename split_huge_page_pmd() to split_huge_pmd() Kirill A. Shutemov
2015-04-29 16:00 ` Jerome Marchand
2015-05-15 13:08 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 10/28] mm, vmstats: new THP splitting event Kirill A. Shutemov
2015-04-29 16:02 ` Jerome Marchand
2015-05-15 13:10 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 11/28] mm: temporally mark THP broken Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 12/28] thp: drop all split_huge_page()-related code Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 13/28] mm: drop tail page refcounting Kirill A. Shutemov
2015-05-18 9:48 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 14/28] futex, thp: remove special case for THP in get_futex_key Kirill A. Shutemov
2015-05-18 11:49 ` Vlastimil Babka
2015-05-18 12:13 ` Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 15/28] ksm: prepare to new THP semantics Kirill A. Shutemov
2015-05-18 12:41 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 16/28] mm, thp: remove compound_lock Kirill A. Shutemov
2015-04-29 16:11 ` Jerome Marchand
2015-04-30 11:58 ` Kirill A. Shutemov [this message]
2015-05-18 12:57 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 17/28] mm, thp: remove infrastructure for handling splitting PMDs Kirill A. Shutemov
2015-04-29 16:14 ` Jerome Marchand
2015-04-30 12:03 ` Kirill A. Shutemov
2015-05-18 13:40 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 18/28] x86, " Kirill A. Shutemov
2015-04-29 9:13 ` Aneesh Kumar K.V
2015-04-23 21:03 ` [PATCHv5 19/28] mm: store mapcount for compound page separately Kirill A. Shutemov
2015-05-18 14:32 ` Vlastimil Babka
2015-05-19 3:55 ` Kirill A. Shutemov
2015-05-19 9:01 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 20/28] mm: differentiate page_mapped() from page_mapcount() for compound pages Kirill A. Shutemov
2015-04-29 16:20 ` Jerome Marchand
2015-04-30 12:06 ` Kirill A. Shutemov
2015-05-18 15:35 ` Vlastimil Babka
2015-05-19 4:00 ` Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 21/28] mm, numa: skip PTE-mapped THP on numa fault Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 22/28] thp: implement split_huge_pmd() Kirill A. Shutemov
2015-05-19 8:25 ` Vlastimil Babka
2015-05-20 14:38 ` Kirill A. Shutemov
2015-04-23 21:03 ` [PATCHv5 23/28] thp: add option to setup migration entiries during PMD split Kirill A. Shutemov
2015-05-19 13:55 ` Vlastimil Babka
2015-04-23 21:03 ` [PATCHv5 24/28] thp, mm: split_huge_page(): caller need to lock page Kirill A. Shutemov
2015-05-19 13:55 ` Vlastimil Babka
2015-04-23 21:04 ` [PATCHv5 25/28] thp: reintroduce split_huge_page() Kirill A. Shutemov
2015-05-19 12:43 ` Vlastimil Babka
2015-04-23 21:04 ` [PATCHv5 26/28] thp: introduce deferred_split_huge_page() Kirill A. Shutemov
2015-05-19 13:54 ` Vlastimil Babka
2015-04-23 21:04 ` [PATCHv5 27/28] mm: re-enable THP Kirill A. Shutemov
2015-04-23 21:04 ` [PATCHv5 28/28] thp: update documentation Kirill A. Shutemov
2015-04-27 23:03 ` [PATCHv5 00/28] THP refcounting redesign Andrew Morton
2015-04-27 23:33 ` Kirill A. Shutemov
2015-04-30 8:25 ` [RFC PATCH 0/3] Remove _PAGE_SPLITTING from ppc64 Aneesh Kumar K.V
2015-04-30 8:25 ` [RFC PATCH 1/3] mm/thp: Use pmdp_splitting_flush_notify to clear pmd on splitting Aneesh Kumar K.V
2015-04-30 13:30 ` Kirill A. Shutemov
2015-04-30 15:59 ` Aneesh Kumar K.V
2015-04-30 16:47 ` Aneesh Kumar K.V
2015-04-30 8:25 ` [RFC PATCH 2/3] powerpc/thp: Remove _PAGE_SPLITTING and related code Aneesh Kumar K.V
2015-04-30 8:25 ` [RFC PATCH 3/3] mm/thp: Add new function to clear pmd on collapse Aneesh Kumar K.V
2015-05-15 8:55 ` [PATCHv5 00/28] THP refcounting redesign Vlastimil Babka
2015-05-15 13:31 ` Kirill A. Shutemov
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