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From: David Howells <dhowells@redhat.com>
To: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: dhowells@redhat.com, Minchan Kim <minchan.kim@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	kosaki.motohiro@jp.fujitsu.com, torvalds@linux-foundation.org,
	peterz@infradead.org, nrik.Berkhan@ge.com,
	uclinux-dev@uclinux.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, hannes@cmpxchg.org, riel@surriel.com
Subject: Re: [PATCH 0/2] Make the Unevictable LRU available on NOMMU
Date: Fri, 20 Mar 2009 16:24:32 +0000	[thread overview]
Message-ID: <12759.1237566272@redhat.com> (raw)
In-Reply-To: <1237565305.27431.48.camel@lts-notebook>

Lee Schermerhorn <Lee.Schermerhorn@hp.com> wrote:

> I just want to point out [again :)] that removing the ramfs pages from
> the lru will prevent them from being migrated

This is less of an issue for NOMMU kernels, since you can't migrate pages that
are mapped.

David

WARNING: multiple messages have this Message-ID (diff)
From: David Howells <dhowells@redhat.com>
To: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: dhowells@redhat.com, Minchan Kim <minchan.kim@gmail.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	kosaki.motohiro@jp.fujitsu.com, torvalds@linux-foundation.org,
	peterz@infradead.org, nrik.Berkhan@ge.com,
	uclinux-dev@uclinux.org, linux-kernel@vger.kernel.org,
	linux-mm@kvack.org, hannes@cmpxchg.org, riel@surriel.com
Subject: Re: [PATCH 0/2] Make the Unevictable LRU available on NOMMU
Date: Fri, 20 Mar 2009 16:24:32 +0000	[thread overview]
Message-ID: <12759.1237566272@redhat.com> (raw)
In-Reply-To: <1237565305.27431.48.camel@lts-notebook>

Lee Schermerhorn <Lee.Schermerhorn@hp.com> wrote:

> I just want to point out [again :)] that removing the ramfs pages from
> the lru will prevent them from being migrated

This is less of an issue for NOMMU kernels, since you can't migrate pages that
are mapped.

David

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  parent reply	other threads:[~2009-03-20 16:28 UTC|newest]

Thread overview: 101+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-11 15:30 [PATCH] NOMMU: Pages allocated to a ramfs inode's pagecache may get wrongly discarded David Howells
2009-03-11 17:26 ` Johannes Weiner
2009-03-11 22:03 ` Andrew Morton
2009-03-11 22:03   ` Andrew Morton
2009-03-11 22:36   ` Johannes Weiner
2009-03-11 22:36     ` Johannes Weiner
2009-03-12  0:02   ` Andrew Morton
2009-03-12  0:02     ` Andrew Morton
2009-03-12  0:35     ` Minchan Kim
2009-03-12  0:35       ` Minchan Kim
2009-03-12  1:04       ` KOSAKI Motohiro
2009-03-12  1:04         ` KOSAKI Motohiro
2009-03-12  1:52         ` Minchan Kim
2009-03-12  1:52           ` Minchan Kim
2009-03-12  1:56           ` Minchan Kim
2009-03-12  1:56             ` Minchan Kim
2009-03-12  2:00           ` KOSAKI Motohiro
2009-03-12  2:00             ` KOSAKI Motohiro
2009-03-12  2:11             ` Minchan Kim
2009-03-12  2:11               ` Minchan Kim
2009-03-12 12:19         ` Robin Getz
2009-03-12 12:19           ` Robin Getz
2009-03-12 17:55           ` [uClinux-dev] " Jamie Lokier
2009-03-12 17:55             ` Jamie Lokier
2009-03-13 17:33         ` [PATCH 0/2] Make the Unevictable LRU available on NOMMU David Howells
2009-03-13 17:33           ` David Howells
2009-03-13 17:33           ` [PATCH 1/2] NOMMU: There is no mlock() for NOMMU, so don't provide the bits David Howells
2009-03-13 17:33             ` David Howells
2009-03-14 11:17             ` KOSAKI Motohiro
2009-03-14 11:17               ` KOSAKI Motohiro
2009-03-13 17:33           ` [PATCH 2/2] NOMMU: Make CONFIG_UNEVICTABLE_LRU available when CONFIG_MMU=n David Howells
2009-03-13 17:33             ` David Howells
2009-03-14 11:17             ` KOSAKI Motohiro
2009-03-14 11:17               ` KOSAKI Motohiro
2009-03-14  0:27           ` [PATCH 0/2] Make the Unevictable LRU available on NOMMU Minchan Kim
2009-03-14  0:27             ` Minchan Kim
2009-03-20 16:08             ` Lee Schermerhorn
2009-03-20 16:08               ` Lee Schermerhorn
2009-03-20 16:24             ` David Howells [this message]
2009-03-20 16:24               ` David Howells
2009-03-20 18:30               ` Lee Schermerhorn
2009-03-20 18:30                 ` Lee Schermerhorn
2009-03-21 10:20                 ` Johannes Weiner
2009-03-21 10:20                   ` Johannes Weiner
2009-03-22 20:13                   ` [patch 1/3] mm: decouple unevictable lru from mmu Johannes Weiner
2009-03-22 20:13                     ` Johannes Weiner
2009-03-22 23:46                     ` KOSAKI Motohiro
2009-03-22 23:46                       ` KOSAKI Motohiro
2009-03-23  0:14                       ` Johannes Weiner
2009-03-23  0:14                         ` Johannes Weiner
2009-03-23 10:48                       ` David Howells
2009-03-23 10:48                         ` David Howells
2009-03-22 20:13                   ` [patch 2/3] ramfs-nommu: use generic lru cache Johannes Weiner
2009-03-22 20:13                     ` Johannes Weiner
2009-03-23  2:22                     ` KOSAKI Motohiro
2009-03-23  2:22                       ` KOSAKI Motohiro
2009-03-22 20:13                   ` [patch 3/3] mm: keep pages from unevictable mappings off the LRU lists Johannes Weiner
2009-03-22 20:13                     ` Johannes Weiner
2009-03-23  0:44                     ` Minchan Kim
2009-03-23  0:44                       ` Minchan Kim
2009-03-23  2:21                       ` KOSAKI Motohiro
2009-03-23  2:21                         ` KOSAKI Motohiro
2009-03-23  8:42                         ` Johannes Weiner
2009-03-23  8:42                           ` Johannes Weiner
2009-03-23  9:01                           ` KOSAKI Motohiro
2009-03-23  9:01                             ` KOSAKI Motohiro
2009-03-23  9:23                             ` KOSAKI Motohiro
2009-03-23  9:23                               ` KOSAKI Motohiro
2009-03-26  0:48                               ` Johannes Weiner
2009-03-26  0:48                                 ` Johannes Weiner
2009-03-23 10:40                   ` [patch 2/3] ramfs-nommu: use generic lru cache David Howells
2009-03-23 10:40                     ` David Howells
2009-03-23 10:53                   ` [patch 3/3] mm: keep pages from unevictable mappings off the LRU lists David Howells
2009-03-23 10:53                     ` David Howells
2009-03-26  0:01                     ` Johannes Weiner
2009-03-26  0:01                       ` Johannes Weiner
2009-03-26  8:56                       ` KOSAKI Motohiro
2009-03-26  8:56                         ` KOSAKI Motohiro
2009-03-26 10:36                         ` Johannes Weiner
2009-03-26 10:36                           ` Johannes Weiner
2009-03-23 20:07                   ` [PATCH 0/2] Make the Unevictable LRU available on NOMMU Lee Schermerhorn
2009-03-23 20:07                     ` Lee Schermerhorn
2009-03-13 11:53       ` [PATCH] NOMMU: Pages allocated to a ramfs inode's pagecache may get wrongly discarded David Howells
2009-03-13 11:53         ` David Howells
2009-03-13 22:49         ` Johannes Weiner
2009-03-13 22:49           ` Johannes Weiner
2009-03-12  0:08 ` Andrew Morton
2009-03-12  7:12   ` Berkhan, Enrik (GE Infra, Oil & Gas)
2009-03-12 11:29     ` [uClinux-dev] " Jamie Lokier
2009-03-12 11:50       ` Peter Zijlstra
2009-03-12 23:20         ` Minchan Kim
2009-03-13  7:56           ` Peter Zijlstra
2009-03-13  9:17             ` Minchan Kim
2009-03-12 12:25 ` David Howells
2009-03-12 19:43   ` Andrew Morton
2009-03-13  2:03     ` KOSAKI Motohiro
2009-03-13  7:57       ` Peter Zijlstra
2009-03-13  8:15         ` KOSAKI Motohiro
2009-03-13  9:19           ` Minchan Kim
2009-03-13 10:44           ` Johannes Weiner
2009-03-14 14:29             ` KOSAKI Motohiro

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