Re: 2.7 block ramblings (was Re: DMA for ide-scsi?)
From: Alan Cox (alan_at_lxorguk.ukuu.org.uk)
Date: 09/21/03
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To: Jeff Garzik <jgarzik@pobox.com> Date: Sat, 20 Sep 2003 23:46:55 +0100
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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