Return-Path: <linux-kernel-owner+willy=40w.ods.org@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id <S319061AbSHFKvP>; Tue, 6 Aug 2002 06:51:15 -0400
Received: (majordomo@vger.kernel.org) by vger.kernel.org
	id <S319062AbSHFKvP>; Tue, 6 Aug 2002 06:51:15 -0400
Received: from ns.virtualhost.dk ([195.184.98.160]:42953 "EHLO virtualhost.dk")
	by vger.kernel.org with ESMTP id <S319061AbSHFKvO>;
	Tue, 6 Aug 2002 06:51:14 -0400
Date: Tue, 6 Aug 2002 12:54:50 +0200
From: Jens Axboe <axboe@suse.de>
To: martin@dalecki.de
Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz>, linux-kernel@vger.kernel.org,
       torvalds@transmeta.com
Subject: Re: [PATCH] 2.5.30 IDE 113
Message-ID: <20020806105450.GD1323@suse.de>
References: <13A77E76028@vcnet.vc.cvut.cz> <3D4FA2F8.2050305@evision.ag> <20020806104238.GB1132@suse.de> <3D4FA845.90702@evision.ag>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <3D4FA845.90702@evision.ag>
Sender: linux-kernel-owner@vger.kernel.org
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1289
Lines: 32

On Tue, Aug 06 2002, Marcin Dalecki wrote:
> Uz.ytkownik Jens Axboe napisa?:
> >On Tue, Aug 06 2002, Marcin Dalecki wrote:
> >
> >>device not per channel! If q->request_fn would properly return the
> >>error count instead of void, we could even get rid ot the
> >>checking for rq->errors after finishment... But well that's
> >>entierly different story.
> >
> >
> >That's nonsense! What exactly would you return from a request_fn after
> >having queued, eg, 20 commands? Error count is per request, anything
> >else would be stupid.
> 
> Returning the error count in the case q->request_fn is called for
> a self submitted request like for example REQ_SPECIAL would be handy and 
> well defined. For the cumulative case it would of course make sense to 
> return the cumulative error count. Tough not very meaningfull, it would
> indicate the occurrence of the error very fine.

It's much nicer to maintain a sane API that doesn't depend on stuff like
the above. Cumulative error count, come on, you can't possibly be
serious?!

-- 
Jens Axboe

-
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/