linux-kernel - Re: [PATCH 12/13] ll_rw_blk: temporarily enable max

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Message-ID: <20070510112034.GO4629@kernel.dk>
Date:	Thu, 10 May 2007 13:20:34 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 12/13] ll_rw_blk: temporarily enable max_segments  tweaking

On Thu, May 10 2007, Andrew Morton wrote:
> On Thu, 10 May 2007 12:21:54 +0200 Jens Axboe <jens.axboe@...cle.com> wrote:
> 
> > Expose this setting for now, so that users can play with enabling
> > large commands without defaulting it to on globally.
> > 
> > Signed-off-by: Jens Axboe <jens.axboe@...cle.com>
> > ---
> >  block/ll_rw_blk.c |   22 ++++++++++++++++++++++
> >  1 files changed, 22 insertions(+), 0 deletions(-)
> > 
> > diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
> > index b01a5f2..cf05396 100644
> > --- a/block/ll_rw_blk.c
> > +++ b/block/ll_rw_blk.c
> > @@ -3930,7 +3930,22 @@ static ssize_t queue_max_hw_sectors_show(struct request_queue *q, char *page)
> >  	return queue_var_show(max_hw_sectors_kb, (page));
> >  }
> >  
> > +static ssize_t queue_max_segments_show(struct request_queue *q, char *page)
> > +{
> > +	return queue_var_show(q->max_phys_segments, page);
> > +}
> > +
> > +static ssize_t queue_max_segments_store(struct request_queue *q, const char *page, size_t count)
> 
> 100-col xterm?

It's a debug thing, it'll go away for the final versions. So I didn't
pay much attention to details.

-- 
Jens Axboe

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