From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Lee Schermerhorn <Lee.Schermerhorn@hp.com>,
Benjamin Kidwell <benjkidwell@yahoo.com>
Subject: Re: [-mm][PATCH 1/10] fix UNEVICTABLE_LRU and !PROC_PAGE_MONITOR build
Date: Thu, 3 Jul 2008 09:16:37 -0400 [thread overview]
Message-ID: <20080703091637.5fcb0308@bree.surriel.com> (raw)
In-Reply-To: <20080703145454.B963.KOSAKI.MOTOHIRO@jp.fujitsu.com>
On Thu, 03 Jul 2008 15:02:23 +0900
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
> > > config UNEVICTABLE_LRU
> > > bool "Add LRU list to track non-evictable pages"
> > > default y
> > > + select PAGE_WALKER
> >
> > So what do we do? Make UNEVICTABLE_LRU depend on CONFIG_MMU? That
> > would be even worse than what we have now.
>
> I'm not sure about what do we do. but I'd prefer "depends on MMU".
> because current munlock implementation need pagewalker.
> So, munlock rewriting have high risk rather than change depend on.
>
> Rik, What do you think?
I suspect that systems without an MMU will not run into
page replacement scalability issues, so making the
UNEVICTABLE_LRU config option depend on MMU should be
ok.
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next prev parent reply other threads:[~2008-07-03 13:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-25 9:59 [-mm][PATCH 0/10] memory related bugfix set for 2.6.26-rc5-mm3 v2 KOSAKI Motohiro
2008-06-25 10:01 ` [-mm][PATCH 1/10] fix UNEVICTABLE_LRU and !PROC_PAGE_MONITOR build KOSAKI Motohiro
2008-07-03 5:36 ` Andrew Morton
2008-07-03 6:02 ` KOSAKI Motohiro
2008-07-03 13:16 ` Rik van Riel [this message]
2008-06-25 10:02 ` [-mm][PATCH 2/10] fix printk in show_free_areas() KOSAKI Motohiro
2008-06-25 10:03 ` [-mm][PATCH 3/10] fix munlock page table walk - now requires 'mm' KOSAKI Motohiro
2008-06-25 10:04 ` [-mm][PATCH 4/10] fix migration_entry_wait() for speculative page cache KOSAKI Motohiro
2008-06-25 10:05 ` [-mm][PATCH 5/10] collect lru meminfo statistics from correct offset KOSAKI Motohiro
2008-06-25 10:06 ` [-mm][PATCH 6/10] fix incorrect Mlocked field of /proc/meminfo KOSAKI Motohiro
2008-06-25 10:07 ` [-mm][PATCH 7/10] prevent incorrect oom under split_lru KOSAKI Motohiro
2008-06-25 10:09 ` [-mm][PATCH 8/10] fix shmem page migration incorrectness on memcgroup KOSAKI Motohiro
2008-06-27 5:08 ` MinChan Kim
2008-06-27 5:41 ` KOSAKI Motohiro
2008-06-27 7:57 ` MinChan Kim
2008-06-27 8:52 ` KAMEZAWA Hiroyuki
2008-06-27 9:29 ` Daisuke Nishimura
2008-06-27 12:24 ` kamezawa.hiroyu
2008-06-27 10:13 ` MinChan Kim
2008-06-25 10:10 ` [-mm][PATCH 9/10] memcg: fix mem_cgroup_end_migration() race KOSAKI Motohiro
2008-06-25 10:53 ` Daisuke Nishimura
2008-06-25 10:11 ` [-mm][PATCH 10/10] putback_lru_page()/unevictable page handling rework v4 KOSAKI Motohiro
2008-06-25 10:14 ` KOSAKI Motohiro
2008-06-25 22:13 ` Andrew Morton
2008-06-26 1:31 ` KOSAKI Motohiro
2008-06-25 16:29 ` Lee Schermerhorn
2008-06-26 8:08 ` KOSAKI Motohiro
2008-06-25 15:09 ` [-mm][PATCH 0/10] memory related bugfix set for 2.6.26-rc5-mm3 v2 Lee Schermerhorn
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