From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alex Tomas <alex@clusterfs.com>
Subject: Re: Lazy block allocation and block_prepare_write?
Date: Tue, 19 Apr 2005 19:04:49 +0400
Message-ID: <m3u0m2dcz2.fsf@bzzz.home.net>
References: <8e70aacf05041717546fdff3f@mail.gmail.com>
	<42647484.5040208@us.ibm.com> <m3y8bfcc1m.fsf@bzzz.home.net>
	<1113922091.26913.420.camel@dyn318077bld.beaverton.ibm.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: Alex Tomas <alex@clusterfs.com>, Martin Jambor <jamborm@gmail.com>,
	linux-fsdevel@vger.kernel.org
Return-path: <linux-fsdevel-owner@vger.kernel.org>
Received: from [83.102.214.158] ([83.102.214.158]:33208 "EHLO gw.home.net")
	by vger.kernel.org with ESMTP id S261600AbVDSPGW (ORCPT
	<rfc822;linux-fsdevel@vger.kernel.org>);
	Tue, 19 Apr 2005 11:06:22 -0400
To: Badari Pulavarty <pbadari@us.ibm.com>
In-Reply-To: <1113922091.26913.420.camel@dyn318077bld.beaverton.ibm.com> (Badari
 Pulavarty's message of "19 Apr 2005 07:48:12 -0700")
Sender: linux-fsdevel-owner@vger.kernel.org
List-Id: linux-fsdevel.vger.kernel.org

>>>>> Badari Pulavarty (BP) writes:
 
 >> you can introduce one more bit to page->flags

 BP> Agreed. I was hoping to avoid it as much as I can.

well, you're gonna modify mpage api anyway ...

 BP> What I meant by jounalling mode is that - after the pages are submitted
 BP> for IO, we need some way of waiting for the IOs to finish inorder to
 BP> guarantee the ordering ? Is this not needed for anything other than
 BP> ext3 ?

1) i'm not sure anyone else supports this
2) Andrew proposed the excelent solution

thanks, Alex