From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from westrelay02.boulder.ibm.com (westrelay02.boulder.ibm.com [9.17.195.11]) by e36.co.us.ibm.com (8.12.11.20060308/8.12.11) with ESMTP id k7I3XIhl029525 for ; Thu, 17 Aug 2006 23:33:18 -0400 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by westrelay02.boulder.ibm.com (8.13.6/8.13.6/NCO v8.1.1) with ESMTP id k7I3XH1b246886 for ; Thu, 17 Aug 2006 21:33:17 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id k7I3XHDG029123 for ; Thu, 17 Aug 2006 21:33:17 -0600 Message-ID: <44E534F1.903@in.ibm.com> Date: Fri, 18 Aug 2006 09:03:05 +0530 From: Balbir Singh Reply-To: balbir@in.ibm.com MIME-Version: 1.0 Subject: Re: [RFC][PATCH] "challenged" memory controller References: <20060815192047.EE4A0960@localhost.localdomain> <20060815150721.21ff961e.pj@sgi.com> <44E447E7.8070502@in.ibm.com> <1155826045.9274.44.camel@localhost.localdomain> In-Reply-To: <1155826045.9274.44.camel@localhost.localdomain> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Dave Hansen Cc: Paul Jackson , linux-mm@kvack.org List-ID: Dave Hansen wrote: > On Thu, 2006-08-17 at 16:11 +0530, Balbir Singh wrote: >> Would it be possible to protect task->cpuset using rcu_read_lock() for read >> references as cpuset_update_task_memory_state() does (and use the generations >> trick to see if a task changed cpusets)? I guess the cost paid is an additional >> field in the page structure to add generations. > > cpusets isn't going to be used long-term here, so we don't really have > to worry about it. > > -- Dave > Yes, good point. Thanks for keeping me on course. -- Balbir Singh, Linux Technology Center, IBM Software Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org