From: Andi Kleen <andi@firstfloor.org>
To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mgorman@suse.de>, Hugh Dickins <hughd@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Andi Kleen <andi@firstfloor.org>, Hillf Danton <dhillf@gmail.com>,
Michal Hocko <mhocko@suse.cz>, Rik van Riel <riel@redhat.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org,
Naoya Horiguchi <nao.horiguchi@gmail.com>
Subject: Re: [PATCH v3 0/8] extend hugepage migration
Date: Fri, 19 Jul 2013 17:33:32 +0200 [thread overview]
Message-ID: <20130719153332.GG6123@two.firstfloor.org> (raw)
In-Reply-To: <1374183272-10153-1-git-send-email-n-horiguchi@ah.jp.nec.com>
On Thu, Jul 18, 2013 at 05:34:24PM -0400, Naoya Horiguchi wrote:
> Here is the 3rd version of hugepage migration patchset.
> I rebased it onto v3.11-rc1 and applied most of your feedbacks.
>
> Some works referred to in previous discussion (shown below) are not included
> in this patchset, but likely to be done after this work.
> - using page walker in check_range
> - split page table lock for pmd/pud based hugepage (maybe applicable to thp)
I did a quick read through the patchkit and it looks all good to me.
It also closes a long standing gap. Thanks!
Acked-by: Andi Kleen <ak@linux.intel.com>
> Hugepage migration of 1GB hugepage is not enabled for now, because
> I'm not sure whether users of 1GB hugepage really want it.
> We need to spare free hugepage in order to do migration, but I don't
> think that users want to 1GB memory to idle for that purpose
> (currently we can't expand/shrink 1GB hugepage pool after boot).
I think we'll need 1GB migration sooner or later. As memory sizes
go up 1GB use will be more common, and the limitation of not
expanding/shrinking 1GB will be eventually fixed.
It would be just a straight forward extension of your patchkit,
right?
-Andi
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next prev parent reply other threads:[~2013-07-19 15:33 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-18 21:34 [PATCH v3 0/8] extend hugepage migration Naoya Horiguchi
2013-07-18 21:34 ` [PATCH 1/8] migrate: make core migration code aware of hugepage Naoya Horiguchi
2013-07-19 2:38 ` Hillf Danton
2013-07-19 3:18 ` Naoya Horiguchi
2013-07-19 4:04 ` Hillf Danton
2013-07-19 5:09 ` Naoya Horiguchi
2013-07-24 2:28 ` Wanpeng Li
2013-07-24 2:28 ` Wanpeng Li
2013-07-18 21:34 ` [PATCH 2/8] soft-offline: use migrate_pages() instead of migrate_huge_page() Naoya Horiguchi
2013-07-24 2:40 ` Wanpeng Li
2013-07-24 2:40 ` Wanpeng Li
2013-07-18 21:34 ` [PATCH 3/8] migrate: add hugepage migration code to migrate_pages() Naoya Horiguchi
2013-07-19 3:05 ` Hillf Danton
2013-07-19 4:13 ` Naoya Horiguchi
2013-07-24 3:33 ` Wanpeng Li
2013-07-24 3:33 ` Wanpeng Li
2013-07-18 21:34 ` [PATCH 4/8] migrate: add hugepage migration code to move_pages() Naoya Horiguchi
2013-07-19 3:36 ` Hillf Danton
2013-07-19 4:36 ` Naoya Horiguchi
2013-07-24 3:41 ` Wanpeng Li
2013-07-24 3:41 ` Wanpeng Li
2013-07-18 21:34 ` [PATCH 5/8] mbind: add hugepage migration code to mbind() Naoya Horiguchi
2013-07-24 3:43 ` Wanpeng Li
2013-07-24 3:43 ` Wanpeng Li
2013-07-18 21:34 ` [PATCH 6/8] migrate: remove VM_HUGETLB from vma flag check in vma_migratable() Naoya Horiguchi
2013-07-19 5:26 ` Hillf Danton
2013-07-24 3:45 ` Wanpeng Li
2013-07-24 3:45 ` Wanpeng Li
2013-07-18 21:34 ` [PATCH 7/8] memory-hotplug: enable memory hotplug to handle hugepage Naoya Horiguchi
2013-07-19 5:40 ` Hillf Danton
2013-07-19 14:39 ` Naoya Horiguchi
2013-07-20 10:04 ` Hillf Danton
2013-07-24 6:10 ` Wanpeng Li
2013-07-24 6:10 ` Wanpeng Li
[not found] ` <51ef6fd0.1019310a.5683.345bSMTPIN_ADDED_BROKEN@mx.google.com>
2013-07-24 6:26 ` Naoya Horiguchi
2013-07-18 21:34 ` [PATCH 8/8] prepare to remove /proc/sys/vm/hugepages_treat_as_movable Naoya Horiguchi
2013-07-24 3:46 ` Wanpeng Li
2013-07-24 3:46 ` Wanpeng Li
2013-07-19 15:33 ` Andi Kleen [this message]
2013-07-19 15:49 ` [PATCH v3 0/8] extend hugepage migration Naoya Horiguchi
2013-07-19 17:33 ` Andi Kleen
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