From: Jens Axboe <axboe@suse.de>
To: Christoph Hellwig <hch@lst.de>
Cc: jejb@steeleye.com, linux-scsi@vger.kernel.org
Subject: Re: unify SCSI_IOCTL_SEND_COMMAND implementations
Date: Thu, 23 Mar 2006 16:43:05 +0100 [thread overview]
Message-ID: <20060323154304.GA27733@suse.de> (raw)
In-Reply-To: <20060323144800.GA27044@lst.de>
On Thu, Mar 23 2006, Christoph Hellwig wrote:
> On Thu, Mar 23, 2006 at 11:18:19AM +0100, Jens Axboe wrote:
> > > the non-S/G I/O path. Jens, what do you think about adding a check
> > > for non-S/G I/O in the midlayer?
> >
> > Looks good to me. Are cdrom/sr sg clean as well?
>
> there's just one place in cdrom.c that sends a request directly:
> cdrom_read_cdda_bpc, which sends a S/G BLOCK_PC one. Everything else
> goes through ->packet_command which is implemented as oldstyle-PC
> requests in IDE and S/G BLOCK_PC in scsi. all scsi-internal requests
> including those from sr are S/G of BLOCK_PC type.
Ok thanks for confirming, then lets just add that non-sg check in the
mid layer.
--
Jens Axboe
prev parent reply other threads:[~2006-03-23 15:43 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-22 16:52 unify SCSI_IOCTL_SEND_COMMAND implementations Christoph Hellwig
2006-03-23 10:18 ` Jens Axboe
2006-03-23 14:48 ` Christoph Hellwig
2006-03-23 15:43 ` Jens Axboe [this message]
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