From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <liml@rtr.ca>
Subject: Re: [PATCH 4/4] bidi support: bidirectional request
Date: Mon, 30 Apr 2007 09:05:57 -0400
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To: Jens Axboe <jens.axboe@oracle.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>, Boaz Harrosh <bharrosh@panasas.com>, FUJITA Tomonori <tomof@acm.org>, akpm@osdl.org, michaelc@cs.wisc.edu, hch@infradead.org, linux-scsi@vger.kernel.org, linux-ide@vger.kernel.org, bhalevy@panasas.com

Jens Axboe wrote:
>
> So basically just add a struct request pointer, so you can do rq =
> rq->next_rq or something for the next data phase. I bet this would be a
> LOT less invasive as well, and we can get by with a few helpers to
> support it.

Hey, I want a way to issue those (linked requests) from userspace (SG_IO), too.
Specifically for use with the new SMART Command Transport (SCT) feature set
on modern SATA drives.  As well as for a disk recovery utility I'm working on.

Sounds generally useful, that.