The following reply was made to PR kern/34882; it has been noted by GNATS.

From: David Laight <david@l8s.co.uk>
To: "Julio M. Merino Vidal" <jmmv84@gmail.com>
Cc: tech-kern <tech-kern@netbsd.org>, gnats-bugs@NetBSD.org
Subject: Re: Use vn_rdwr in vnd (Re: kern/34882)
Date: Thu, 9 Nov 2006 22:22:53 +0000

 On Tue, Nov 07, 2006 at 02:57:06PM +0100, Julio M. Merino Vidal wrote:
 > 
 > The attached patch makes vnd use the regular VOP_READ and VOP_WRITE
 > operations iff bmap/strategy are _not_ available
 
 Would that let it work with sparse files ?
 If so a mount option might be useful.
 
 	David
 
 -- 
 David Laight: david@l8s.co.uk