From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933045Ab0LUAlZ (ORCPT ); Mon, 20 Dec 2010 19:41:25 -0500 Received: from mga03.intel.com ([143.182.124.21]:13015 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752838Ab0LUAlY (ORCPT ); Mon, 20 Dec 2010 19:41:24 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.60,205,1291622400"; d="scan'208";a="364404616" Subject: Re: [concept & "good taste" review] persistent store From: Huang Ying To: David Howells Cc: "Luck, Tony" , Borislav Petkov , Tony Luck , Linus Torvalds , "H. Peter Anvin" , "linux-kernel@vger.kernel.org" , "linux-arch@vger.kernel.org" , "tglx@linutronix.de" , "mingo@elte.hu" , "greg@kroah.com" , "akpm@linux-foundation.org" , David Miller , Alan Cox , Jim Keniston , Kyungmin Park , Geert Uytterhoeven In-Reply-To: <17027.1292841992@redhat.com> References: <1292813234.8743.66.camel@yhuang-dev> <4d0662e511688484b3@agluck-desktop.sc.intel.com> <4D0BEE1F.7020008@zytor.com> <20101219091752.GA16150@liondog.tnic> <17027.1292841992@redhat.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 21 Dec 2010 08:41:12 +0800 Message-ID: <1292892072.8743.70.camel@yhuang-dev> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2010-12-20 at 18:46 +0800, David Howells wrote: > Huang Ying wrote: > > > - for OOPS messages will not cause system panic, it will go to disk and > > will not use up the persistent storage. > > You can't guarantee that an oops didn't just kill your ability to actually > write your syslog to disk or out across the network. I do not need to guarantee that. If the OOPS message can not be written to disk, just keeping it in persistent storage, and that is the very value of persistent storage. But for OOPS can go to disk safely, we do not need to waste persistent storage for it. Best Regards, Huang Ying