linux-kernel - Re: [patch 12/18] usb: mon nopage

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Date:	Thu, 6 Dec 2007 00:54:01 +0100
From:	Nick Piggin <npiggin@...e.de>
To:	Pete Zaitcev <zaitcev@...hat.com>
Cc:	akpm@...ux-foundation.org, paolo.abeni@...il.it,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 12/18] usb: mon nopage

On Wed, Dec 05, 2007 at 08:39:25AM -0800, Pete Zaitcev wrote:
> On Wed, 05 Dec 2007 18:15:59 +1100, npiggin@...e.de wrote:
> 
> > Convert USB mon driver from nopage to fault.
> 
> >  	if (offset >= rp->b_size)
> > -		return NOPAGE_SIGBUS;
> > +		return VM_FAULT_SIGBUS;
> >  	chunk_idx = offset / CHUNK_SIZE;
> >  	pageptr = rp->b_vec[chunk_idx].pg;
> >  	get_page(pageptr);
> > -	if (type)
> > -		*type = VM_FAULT_MINOR;
> > -	return pageptr;
> > +	vmf->page = pageptr;
> > +	return 0;
> 
> Looks like a trivial change, I ack this. It's a rarely used API, I have
> to run tests to see how it works. I'll collect any failing pieces later
> if any.

That would be great, thanks.


> Signed-off-by: Pete Zaitcev <zaitcev@...hat.com>
> 
> -- Pete
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