Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964869AbWJWOPZ (ORCPT ); Mon, 23 Oct 2006 10:15:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751953AbWJWOPY (ORCPT ); Mon, 23 Oct 2006 10:15:24 -0400 Received: from smtp109.mail.mud.yahoo.com ([209.191.85.219]:42139 "HELO smtp109.mail.mud.yahoo.com") by vger.kernel.org with SMTP id S1751477AbWJWOPX (ORCPT ); Mon, 23 Oct 2006 10:15:23 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com.au; h=Received:Message-ID:Date:From:User-Agent:X-Accept-Language:MIME-Version:To:CC:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=vTyNe6uDjIR3Gz+nfhXpbLBO7y5v/chNkTIKfZq44nEtZZ+xg2/mhrg6Duoyj9yMe8nAB4KvXmF4b5jCSdlq0CDFIv36BA5bmE9JvqlO6lhkW5/lOWGii6vj1tbHi/o5giYCj61v7WN3n40ZkAPRvRlcuVQuanMREEIPxhYX3zo= ; Message-ID: <453CCE75.20302@yahoo.com.au> Date: Tue, 24 Oct 2006 00:15:17 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20051007 Debian/1.7.12-1 X-Accept-Language: en MIME-Version: 1.0 To: "Rafael J. Wysocki" CC: Nigel Cunningham , Andrew Morton , LKML , Pavel Machek Subject: Re: [PATCH] Freeze bdevs when freezing processes. References: <1161576735.3466.7.camel@nigel.suspend2.net> <200610231236.54317.rjw@sisk.pl> <1161605379.3315.23.camel@nigel.suspend2.net> <200610231607.17525.rjw@sisk.pl> In-Reply-To: <200610231607.17525.rjw@sisk.pl> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1042 Lines: 23 Rafael J. Wysocki wrote: > This case is a bit special. I don't think it would be right to require every > device driver writer to avoid modifying RCU pages from the interrupt > context, because that would break the suspend to disk ... > > Besides, if there is an RCU page that we _know_ we can use to store the image > in it, we can just include this page in the image without copying. This > already gives us one extra free page for the rest of the image and we can > _avoid_ creating two images which suspend2 does and which adds a _lot_ of > complexity to the code. If you don't mind me asking... what are these RCU pages you speak of? I couldn't work it out by grepping kernel/power/* -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/