From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hans Reiser <reiser@namesys.com>
Subject: Re: write barrier patches for 2.4.21
Date: Wed, 03 Sep 2003 02:10:03 +0400
Message-ID: <3F55153B.1060808@namesys.com>
References: <20030825170849.GA14811@mfa.kfki.hu> <20030826214624.GA410@zero> <20030827064103.GA29131@namesys.com>
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To: Oleg Drokin <green@namesys.com>
Cc: Tom Vier <tmv@comcast.net>, Reiserfs List <reiserfs-list@namesys.com>

Oleg Drokin wrote:

>Hello!
>
>On Tue, Aug 26, 2003 at 05:46:24PM -0400, Tom Vier wrote:
>
>  
>
>>anyone working on scsi wb's? there was a long thread on l-k about wb's, but
>>i wasn't aware what came of it.
>>    
>>
>
>There was a discussion about that on Kernel Summit 2003 and general opinion was that SCSI
>does not need the WB stuff at all as it does the correct thing anyway.
>
define "correct thing".

>But since the the barrier flags are visible in io requests, actual device drivers
>are free to do something when met with barrier requests or to ignore it.
>The only concern is probably raid cards that show bunch of IDE drives as a SCSI device.
>
>Bye,
>    Oleg
>
>
>  
>


-- 
Hans