linux-kernel - Re: USBFS Memory allocation Bug

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Message-ID: <Pine.LNX.4.44L0.1003111155030.1367-100000@iolanthe.rowland.org>
Date:	Thu, 11 Mar 2010 11:56:22 -0500 (EST)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Mel Gorman <mel@....ul.ie>
cc:	Markus Rechberger <mrechberger@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, Greg KH <greg@...ah.com>
Subject: Re: USBFS Memory allocation Bug

On Wed, 10 Mar 2010, Mel Gorman wrote:

> > > Is there any means for the driver to take the large request, break it up
> > > into multiple smaller requests and submit them one at a time?
> > 
> > In theory almost anything is possible.  But it would be a big effort
> > and not consistent with the way the rest of the driver works.
> > 
> 
> Then about the only other suggestion would be a mempool containing a small
> number of largest-possible buffers that is enabled if there is no swap
> available.

Considering that this is the first report I have heard about this sort 
of problem, and that adding swap space would probably fix it, I'm not 
inclined to make any changes.

Alan Stern

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