From: Li Zefan <lizf@cn.fujitsu.com>
To: kosaki.motohiro@jp.fujitsu.com
Cc: linux-mm@kvack.org, akpm@linux-foundation.org
Subject: Re: [-mm][splitlru][PATCH 0/3] munlock rework
Date: Sat, 19 Jul 2008 17:25:23 +0800 [thread overview]
Message-ID: <4881B303.2010407@cn.fujitsu.com> (raw)
In-Reply-To: <20080719084213.588795788@jp.fujitsu.com>
kosaki.motohiro@jp.fujitsu.com D'uA:
> old munlock processing of unevictable-lru use pagewalk.
> because get_user_pages() can't grab PROT_NONE page.
>
> then, current -mm has two problem.
> - build error on nommu machine
> - runtime error on HIGHPTE machine.
>
> So, I hope rework below concept
>
> Old implementation
> - use pagewalk
>
> New implementation
> - use __get_user_pages()
>
>
> I tested this patch on
> IA64: >24H stress workload
> x86_64: ditto
> x86_32 with HIGHPTE: only half hour
>
>
>
> Li-san, Could you please try to this patch on your 32bit machine?
I've tested this patchset, the bug disappeared and it survived the
ltp tests :) .
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prev parent reply other threads:[~2008-07-19 9:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-19 8:42 [-mm][splitlru][PATCH 0/3] munlock rework kosaki.motohiro
2008-07-19 8:42 ` [-mm][splitlru][PATCH 1/3] introduce __get_user_pages() kosaki.motohiro
2008-07-19 7:47 ` KOSAKI Motohiro
2008-07-19 8:42 ` [-mm][splitlru][PATCH 2/3] split LRU: munlock rework kosaki.motohiro
2008-07-19 14:41 ` Rik van Riel
2008-07-19 8:42 ` [-mm][splitlru][PATCH 3/3] revert to unevictable-lru-infrastructure-kconfig-fix.patch kosaki.motohiro
2008-07-19 14:41 ` Rik van Riel
2008-07-19 9:25 ` Li Zefan [this message]
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