Subject: Re: 2.7 block ramblings (was Re: DMA for ide-scsi?)
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: Jens Axboe <axboe@suse.de>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       torvalds@osdl.org
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	 <20030916195515.GC906@suse.de>  <3F6C9C55.6050608@pobox.com>
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Date: Sat, 20 Sep 2003 23:46:55 +0100
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On Sad, 2003-09-20 at 23:22, Jeff Garzik wrote:
> > Is that an error and change in behaviour ?
> 
> 
> No and yes.  :)
> 
> Current sg breaks the Unix model of write(2)... you shouldn't error out 
> if the queue will "probably" become available again.

Thats what I thought - because apps want to know if the queue is full
when doing raw scsi work some of the time. Would the change break any
known apps - if not it seems fine (providing O_NDELAY is supported)

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