linux-kernel - Re: Pipe buffers' limit of 16 * 4K

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Date:	Fri, 6 Jun 2008 11:19:17 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Jan Engelhardt <jengelh@...ozas.de>
Cc:	Fausto Richetti Blanco <fausto.blanco@...il.com>,
	linux-kernel@...r.kernel.org, miquels@...tron.nl, riel@...hat.com
Subject: Re: Pipe buffers' limit of 16 * 4K

On Thu, Jun 05 2008, Jan Engelhardt wrote:
> 
> On Friday 2008-05-30 12:35, Jens Axboe wrote:
> >
> >I have an old patch that does that, I just looked it up and it was last
> >updated for 2.6.23. It uses fcntl() with F_SETPIPE_SZ for getting and
> >setting the pipe size.
> >
> >Patch updated, the below is the current Linus kernel.
> 
> Can you merge it?

I could, but I think two key things are missing:

- Is fcntl() the interface we want for changing the pipe size?
- So far, no real problems or performance increases have been
  demonstrated.

I'd rather not attempt to push this until the two things have been
addressed/discussed.

-- 
Jens Axboe

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