From: Jerome Marchand <jmarchan@redhat.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
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>,
Sasha Levin <sasha.levin@oracle.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCHv9 15/36] ksm: prepare to new THP semantics
Date: Fri, 31 Jul 2015 16:53:00 +0200 [thread overview]
Message-ID: <55BB8BCC.9010302@redhat.com> (raw)
In-Reply-To: <1437402069-105900-16-git-send-email-kirill.shutemov@linux.intel.com>
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On 07/20/2015 04:20 PM, Kirill A. Shutemov wrote:
> We don't need special code to stabilize THP. If you've got reference to
> any subpage of THP it will not be split under you.
>
> New split_huge_page() also accepts tail pages: no need in special code
> to get reference to head page.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Tested-by: Sasha Levin <sasha.levin@oracle.com>
> Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
> Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
> ---
> mm/ksm.c | 57 ++++++++++-----------------------------------------------
> 1 file changed, 10 insertions(+), 47 deletions(-)
>
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next prev parent reply other threads:[~2015-07-31 14:53 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-20 14:20 [PATCHv9 00/36] THP refcounting redesign Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 01/36] mm, proc: adjust PSS calculation Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 02/36] rmap: add argument to charge compound page Kirill A. Shutemov
2015-07-31 14:45 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 03/36] memcg: adjust to support new THP refcounting Kirill A. Shutemov
2015-07-31 14:46 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 04/36] mm, thp: adjust conditions when we can reuse the page on WP fault Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 05/36] mm: adjust FOLL_SPLIT for new refcounting Kirill A. Shutemov
2015-07-31 14:47 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 06/36] mm: handle PTE-mapped tail pages in gerneric fast gup implementaiton Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 07/36] thp, mlock: do not allow huge pages in mlocked area Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 08/36] khugepaged: ignore pmd tables with THP mapped with ptes Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 09/36] thp: rename split_huge_page_pmd() to split_huge_pmd() Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 10/36] mm, vmstats: new THP splitting event Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 11/36] mm: temporally mark THP broken Kirill A. Shutemov
2015-07-31 14:50 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 12/36] thp: drop all split_huge_page()-related code Kirill A. Shutemov
2015-07-31 14:50 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 13/36] mm: drop tail page refcounting Kirill A. Shutemov
2015-07-31 14:51 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 14/36] futex, thp: remove special case for THP in get_futex_key Kirill A. Shutemov
2015-07-31 14:52 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 15/36] ksm: prepare to new THP semantics Kirill A. Shutemov
2015-07-31 14:53 ` Jerome Marchand [this message]
2015-07-20 14:20 ` [PATCHv9 16/36] mm, thp: remove compound_lock Kirill A. Shutemov
2015-07-31 14:53 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 17/36] arm64, thp: remove infrastructure for handling splitting PMDs Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 18/36] arm, " Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 19/36] mips, " Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 20/36] powerpc, " Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 21/36] s390, " Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 22/36] sparc, " Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 23/36] tile, " Kirill A. Shutemov
2015-07-20 14:20 ` [PATCHv9 24/36] x86, " Kirill A. Shutemov
2015-07-31 14:54 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 25/36] mm, " Kirill A. Shutemov
2015-07-31 15:01 ` Jerome Marchand
2015-08-03 10:41 ` Kirill A. Shutemov
2015-08-03 11:40 ` Jerome Marchand
2015-07-20 14:20 ` [PATCHv9 26/36] mm: rework mapcount accounting to enable 4k mapping of THPs Kirill A. Shutemov
2015-07-31 15:04 ` Jerome Marchand
2015-08-03 10:43 ` Kirill A. Shutemov
2015-08-03 11:41 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 27/36] mm: differentiate page_mapped() from page_mapcount() for compound pages Kirill A. Shutemov
2015-07-31 15:04 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 28/36] mm, numa: skip PTE-mapped THP on numa fault Kirill A. Shutemov
2015-07-31 15:06 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 29/36] thp: implement split_huge_pmd() Kirill A. Shutemov
2015-07-31 15:06 ` Jerome Marchand
2015-08-03 10:44 ` Kirill A. Shutemov
2015-07-20 14:21 ` [PATCHv9 30/36] thp: add option to setup migration entiries during PMD split Kirill A. Shutemov
2015-07-31 15:09 ` Jerome Marchand
2015-08-03 10:53 ` Kirill A. Shutemov
2015-07-20 14:21 ` [PATCHv9 31/36] thp, mm: split_huge_page(): caller need to lock page Kirill A. Shutemov
2015-07-31 15:12 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 32/36] thp: reintroduce split_huge_page() Kirill A. Shutemov
2015-07-31 15:13 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 33/36] migrate_pages: try to split pages on qeueuing Kirill A. Shutemov
2015-07-31 15:14 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 34/36] thp: introduce deferred_split_huge_page() Kirill A. Shutemov
2015-07-31 15:14 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 35/36] mm: re-enable THP Kirill A. Shutemov
2015-07-31 15:15 ` Jerome Marchand
2015-07-20 14:21 ` [PATCHv9 36/36] thp: update documentation Kirill A. Shutemov
2015-07-31 15:16 ` Jerome Marchand
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