Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757645AbZDFUMu (ORCPT ); Mon, 6 Apr 2009 16:12:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752270AbZDFUMl (ORCPT ); Mon, 6 Apr 2009 16:12:41 -0400 Received: from wa-out-1112.google.com ([209.85.146.176]:48150 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751908AbZDFUMk (ORCPT ); Mon, 6 Apr 2009 16:12:40 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:references:in-reply-to:subject:date:message-id :mime-version:content-type:content-transfer-encoding:x-mailer :thread-index:content-language; b=oi8br4GCR7WevLvDg9MFc3tceU5W78Ue25piWF70JNib52qhJhi/IxSSZnJeUkiAeF 4AhiIkDKbiTUos9qHOoYDeFhD8nniw8Q6Yq+Y1qTlUjmjodFMVo/kQoJpbFUlJ9iAMRr akVbwCgc1gkStXFdMRvPxWQqwlxWH2LguSs74= From: "Hua Zhong" To: "'Linus Torvalds'" , "'Theodore Tso'" Cc: "'Jens Axboe'" , "'Linux Kernel Mailing List'" References: <1239022088-29002-1-git-send-email-jens.axboe@oracle.com> <20090406151054.GD5178@kernel.dk> <20090406183157.GD7376@mit.edu> In-Reply-To: Subject: RE: [PATCH 0/8][RFC] IO latency/throughput fixes Date: Mon, 6 Apr 2009 13:12:08 -0700 Message-ID: <002501c9b6f3$f85b4910$e911db30$@com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Acm28i4vKznRxY25QfS84ahpG8PmTgAAX+oQ Content-Language: en-us Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1659 Lines: 42 Grr..making writeback as default would break people's setup that relies on the ordered semantics, especially in the embedded world. It's a big no-no. > -----Original Message----- > From: linux-kernel-owner@vger.kernel.org [mailto:linux-kernel- > owner@vger.kernel.org] On Behalf Of Linus Torvalds > Sent: Monday, April 06, 2009 12:57 PM > To: Theodore Tso > Cc: Jens Axboe; Linux Kernel Mailing List > Subject: Re: [PATCH 0/8][RFC] IO latency/throughput fixes > > > > On Mon, 6 Apr 2009, Theodore Tso wrote: > > > > Cool! Maybe we can make things even better, but given where we are > > at, this brings up an question: given Jens block latency patches > > (thanks, Jens!), and the patches which add the flush on > > replace-via-rename/replace-via-truncate for ext3 data=writeback, > > should we make ext3 data=writeback the default for 2.6.30? > > Yes. I want to go back and see how much this all helps for the > data=ordered case (if at all), but I think we should at least consider > trying 'data=writeback' as a default. > > Does the 'synchronize on rename / close-after-ftrucate' patches leave > any > other intersting cases open? > > Linus > -- > 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/ -- 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/