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From: Andrew Morton <akpm@linux-foundation.org>
To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: linux-mm@kvack.org, Matt Mackall <mpm@selenic.com>,
	Cliff Wickman <cpw@sgi.com>,
	KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
	Johannes Weiner <hannes@cmpxchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Michal Hocko <mhocko@suse.cz>,
	"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
	Pavel Emelyanov <xemul@parallels.com>,
	linux-kernel@vger.kernel.org,
	Thierry Reding <thierry.reding@gmail.com>,
	Mark Brown <broonie@kernel.org>
Subject: Re: [PATCH 0/11] update page table walker
Date: Tue, 15 Oct 2013 13:43:17 -0700	[thread overview]
Message-ID: <20131015134317.02d819f6905f790007ba1842@linux-foundation.org> (raw)
In-Reply-To: <1381772230-26878-1-git-send-email-n-horiguchi@ah.jp.nec.com>

On Mon, 14 Oct 2013 13:36:59 -0400 Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> wrote:

> Page table walker is widely used when you want to traverse page table
> tree and do some work for the entries (and pages pointed to by them.)
> This is a common operation, and keep the code clean and maintainable
> is important. Moreover this patchset introduces caller-specific walk
> control function which is helpful for us to newly introduce page table
> walker to some other users. Core change comes from patch 1, so please
> see it for how it's supposed to work.
> 
> This patchset changes core code in mm/pagewalk.c at first in patch 1 and 2,
> and then updates all of current users to make the code cleaner in patch
> 3-9. Patch 10 changes the interface of hugetlb_entry(), I put it here to
> keep bisectability of the whole patchset. Patch 11 applies page table walker
> to a new user queue_pages_range().

Unfortunately this is very incompatible with pending changes in
fs/proc/task_mmu.c.  Especially Kirill's "mm, thp: change
pmd_trans_huge_lock() to return taken lock".

Stephen will be away for a couple more weeks so I'll get an mmotm
released and hopefully Thierry and Mark will scoop it up(?). 
Alternatively, http://git.cmpxchg.org/?p=linux-mmots.git;a=summary is
up to date.

Please take a look, decide what you think we should do?

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  parent reply	other threads:[~2013-10-15 20:43 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-14 17:36 Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 01/11] pagewalk: update page table walker core Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 02/11] pagewalk: add walk_page_vma() Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 03/11] smaps: redefine callback functions for page table walker Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 04/11] clear_refs: " Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 05/11] pagemap: " Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 06/11] numa_maps: " Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 07/11] memcg: " Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 08/11] madvise: " Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 09/11] arch/powerpc/mm/subpage-prot.c: use walk_page_vma() instead of walk_page_range() Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 10/11] pagewalk: remove argument hmask from hugetlb_entry() Naoya Horiguchi
2013-10-14 17:37 ` [PATCH 11/11] mempolicy: apply page table walker on queue_pages_range() Naoya Horiguchi
2013-10-15 20:43 ` Andrew Morton [this message]
2013-10-15 21:03   ` [PATCH 0/11] update page table walker Naoya Horiguchi
2013-10-16  9:33   ` Thierry Reding

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