From: Christoph Lameter <clameter@sgi.com>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-mm@kvack.org, kamezawa.hiroyu@jp.fujitsu.com,
lee.schermerhorn@hp.com, hugh@veritas.com
Subject: Re: [PATCH 1/7] page migration: Reorder functions in migrate.c
Date: Fri, 28 Apr 2006 17:54:59 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0604281753470.4485@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20060428173650.146a6605.akpm@osdl.org>
On Fri, 28 Apr 2006, Andrew Morton wrote:
> hm. migrate_pages() locks two pages at the same time. We've avoided doing
> that.
>
> a) what prevents ab/ba deadlocks in the migration code?
Ahh. I forgot. Deadlocks are prevented because the page is freshly
allocated and only has a single reference that we are holding.
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prev parent reply other threads:[~2006-04-29 0:54 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-28 6:03 Christoph Lameter
2006-04-28 6:03 ` [PATCH 2/7] page migration: Remove unnecessarily exported functions Christoph Lameter
2006-04-28 6:03 ` [PATCH 3/7] page migration: Change handling of address spaces Christoph Lameter
2006-04-28 6:03 ` [PATCH 4/7] page migration: Drop nr_refs parameter Christoph Lameter
2006-04-28 7:30 ` KAMEZAWA Hiroyuki
2006-04-28 13:57 ` Christoph Lameter
2006-04-28 6:03 ` [PATCH 5/7] page migration: synchronize from and to lists Christoph Lameter
2006-04-28 7:46 ` KAMEZAWA Hiroyuki
2006-04-28 15:31 ` Christoph Lameter
2006-04-29 0:27 ` KAMEZAWA Hiroyuki
2006-04-29 0:33 ` Christoph Lameter
2006-04-29 0:44 ` KAMEZAWA Hiroyuki
2006-04-29 0:46 ` Christoph Lameter
2006-04-28 6:03 ` [PATCH 6/7] page migration: Extract try_to_unmap Christoph Lameter
2006-04-28 6:03 ` [PATCH 7/7] page migration: Add new fallback function Christoph Lameter
2006-04-28 6:42 ` Christoph Lameter
2006-04-28 22:08 ` [PATCH 1/7] page migration: Reorder functions in migrate.c Andrew Morton
2006-04-28 23:01 ` Christoph Lameter
2006-04-28 23:18 ` Andrew Morton
2006-04-29 0:14 ` Christoph Lameter
2006-04-29 0:36 ` Andrew Morton
2006-04-29 0:46 ` Christoph Lameter
2006-04-29 2:27 ` Andrew Morton
2006-04-29 2:48 ` Christoph Lameter
2006-04-29 0:54 ` Christoph Lameter [this message]
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