[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20090328084324.GA1742@liondog.tnic>
Date: Sat, 28 Mar 2009 09:43:24 +0100
From: Borislav Petkov <petkovbb@...glemail.com>
To: Tejun Heo <tj@...nel.org>
Cc: bzolnier@...il.com, linux-kernel@...r.kernel.org, axboe@...nel.dk,
linux-ide@...r.kernel.org
Subject: Re: [PATCH 13/14] ide-atapi: use bio for request sense
On Wed, Mar 25, 2009 at 01:06:15AM +0900, Tejun Heo wrote:
> Impact: unify request data buffer handling
>
> rq->data is used mostly to pass kernel buffer through request queue
> without using bio. There are only a couple of places which still do
> this in kernel and converting to bio isn't difficult.
>
> This patch converts ide-atapi to use bio instead of rq->data. For
> ide_queue_pc_tail() which can block, blk_rq_map_kern() is used. For
> ide_queue_pc_head() which is used for request sense and called from
> atomic context, drive->request_sense_bio and ->request_sense_bvec[2]
> are added and used via bio_map_kern_prealloc().
>
> ide-tape is updated to map sg for special requests.
>
> This change makes all ide-atapi commands except for tape bh ones use
> bio. Drop tp_ops->output/input_data path from ide_pc_intr().
>
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Jens Axboe <axboe@...nel.dk>
Acked-by: Borislav Petkov <petkovbb@...il.com>
--
Regards/Gruss,
Boris.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists