From: Christoph Lameter <cl@linux-foundation.org>
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: linux-mm@kvack.org, Marcelo Tosatti <mtosatti@redhat.com>,
Adam Litke <agl@us.ibm.com>, Avi Kivity <avi@redhat.com>,
Izik Eidus <ieidus@redhat.com>,
Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Nick Piggin <npiggin@suse.de>, Rik van Riel <riel@redhat.com>,
Mel Gorman <mel@csn.ul.ie>, Dave Hansen <dave@linux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Ingo Molnar <mingo@elte.hu>, Mike Travis <travis@sgi.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Chris Wright <chrisw@sous-sol.org>,
Andrew Morton <akpm@linux-foundation.org>,
bpicco@redhat.com,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Balbir Singh <balbir@linux.vnet.ibm.com>,
Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH 32 of 32] khugepaged
Date: Tue, 2 Feb 2010 13:52:11 -0600 (CST) [thread overview]
Message-ID: <alpine.DEB.2.00.1002021347520.19529@router.home> (raw)
In-Reply-To: <20100201225624.GB4135@random.random>
On Mon, 1 Feb 2010, Andrea Arcangeli wrote:
> KSM also works exactly the same as khugepaged and migration but we
> solved it without migration pte and apparently nobody wants to deal
> with that special migration pte logic. So before worrying about
> khugepaged out of the tree, you should actively go fix ksm that works
> exactly the same and it's in mainline. Until you don't fix ksm I think
> I should be allowed to keep khugepaged simple and lightweight without
> being forced to migration pte.
You are being "forced"? What language... You do not want to reuse the ksm
code or the page migration code?
Please consider consolidating the code for the multiple ways that we do
these complex moves of physical memory without changing the physical one.
The code needs to be understandable and easy to maintain after all.
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next prev parent reply other threads:[~2010-02-02 19:53 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-31 20:27 [PATCH 00 of 32] Transparent Hugepage support #9 Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 01 of 32] define MADV_HUGEPAGE Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 02 of 32] compound_lock Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 03 of 32] alter compound get_page/put_page Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 04 of 32] update futex compound knowledge Andrea Arcangeli
2010-02-16 11:33 ` Peter Zijlstra
2010-03-01 17:58 ` Andrea Arcangeli
2010-03-01 18:07 ` Peter Zijlstra
2010-03-01 18:23 ` Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 05 of 32] fix bad_page to show the real reason the page is bad Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 06 of 32] clear compound mapping Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 07 of 32] add native_set_pmd_at Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 08 of 32] add pmd paravirt ops Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 09 of 32] no paravirt version of pmd ops Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 10 of 32] export maybe_mkwrite Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 11 of 32] comment reminder in destroy_compound_page Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 12 of 32] config_transparent_hugepage Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 13 of 32] special pmd_trans_* functions Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 14 of 32] add pmd mangling generic functions Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 15 of 32] add pmd mangling functions to x86 Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 16 of 32] bail out gup_fast on splitting pmd Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 17 of 32] pte alloc trans splitting Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 18 of 32] add pmd mmu_notifier helpers Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 19 of 32] clear page compound Andrea Arcangeli
2010-02-01 21:37 ` Christoph Lameter
2010-01-31 20:27 ` [PATCH 20 of 32] add pmd_huge_pte to mm_struct Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 21 of 32] split_huge_page_mm/vma Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 22 of 32] split_huge_page paging Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 23 of 32] clear_copy_huge_page Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 24 of 32] kvm mmu transparent hugepage support Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 25 of 32] transparent hugepage core Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 26 of 32] verify pmd_trans_huge isn't leaking Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 27 of 32] madvise(MADV_HUGEPAGE) Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 28 of 32] pmd_trans_huge migrate bugcheck Andrea Arcangeli
2010-02-01 21:46 ` Christoph Lameter
2010-02-03 15:49 ` Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 29 of 32] memcg compound Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 30 of 32] memcg huge memory Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 31 of 32] transparent hugepage vmstat Andrea Arcangeli
2010-01-31 20:27 ` [PATCH 32 of 32] khugepaged Andrea Arcangeli
2010-02-01 17:03 ` Rik van Riel
2010-02-02 13:56 ` Andrea Arcangeli
2010-02-01 22:18 ` Christoph Lameter
2010-02-01 22:56 ` Andrea Arcangeli
2010-02-02 19:52 ` Christoph Lameter [this message]
2010-02-02 20:24 ` Andrea Arcangeli
2010-02-03 16:13 ` Christoph Lameter
2010-02-03 16:30 ` Andrea Arcangeli
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