From: Christoph Lameter <cl@linux-foundation.org>
To: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mel Gorman <mel@csn.ul.ie>, linux-mm <linux-mm@kvack.org>,
Linux Kernel ML <linux-kernel@vger.kernel.org>
Subject: Re: [RFC:Patch: 000/008](memory hotplug) rough idea of pgdat removing
Date: Mon, 04 Aug 2008 08:25:02 -0500 [thread overview]
Message-ID: <4897032E.5020601@linux-foundation.org> (raw)
In-Reply-To: <20080802090335.D6C8.E1E9C6FF@jp.fujitsu.com>
Yasunori Goto wrote:
>>> Thanks for your comment.
>> Duh. Then the use of RCU would also mean that all of reclaim must
>> be in a rcu period. So reclaim cannot sleep anymore.
>
> I use srcu_read_lock() (sleepable rcu lock) if kernel must be sleep for
> page reclaim. So, my patch basic idea is followings.
But that introduces more overhead in __alloc_pages.
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next prev parent reply other threads:[~2008-08-04 13:25 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-31 11:50 Yasunori Goto
2008-07-31 11:55 ` [RFC:Patch: 001/008](memory hotplug) change parameter from pointer of zonelist to node id Yasunori Goto
2008-07-31 11:56 ` [RFC:Patch: 002/008](memory hotplug) pgdat_remove_read_lock/unlock Yasunori Goto
2008-07-31 11:58 ` [RFC:Patch: 003/008](memory hotplug) check node online in __alloc_pages Yasunori Goto
2008-07-31 12:00 ` [RFC:Patch: 004/008](memory hotplug) Use lock for for_each_online_node Yasunori Goto
2008-07-31 12:01 ` [RFC:Patch: 005/008](memory hotplug) check node online before NODE_DATA and so on Yasunori Goto
2008-07-31 12:02 ` [RFC:Patch: 006/008](memory hotplug) kswapd_stop() definition Yasunori Goto
2008-07-31 12:03 ` [RFC:Patch: 007/008](memory hotplug) callback routine for mempolicy Yasunori Goto
2008-07-31 12:04 ` [RFC:Patch: 008/008](memory hotplug) remove_pgdat() function Yasunori Goto
2008-09-06 14:21 ` Peter Zijlstra
2008-09-08 3:07 ` Yasunori Goto
2008-07-31 14:04 ` [RFC:Patch: 000/008](memory hotplug) rough idea of pgdat removing Christoph Lameter
2008-08-01 9:42 ` Yasunori Goto
2008-08-01 13:51 ` Christoph Lameter
2008-08-02 0:16 ` Yasunori Goto
2008-08-04 13:25 ` Christoph Lameter [this message]
2008-08-05 6:39 ` Yasunori Goto
2008-08-05 11:14 ` Mel Gorman
2008-08-05 17:08 ` Christoph Lameter
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