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

From: Daniel Carosone <dan@geek.com.au>
To: "Julio M. Merino Vidal" <jmmv84@gmail.com>,
	tech-kern <tech-kern@netbsd.org>, gnats-bugs@NetBSD.org
Cc: 
Subject: Re: Use vn_rdwr in vnd (Re: kern/34882)
Date: Fri, 10 Nov 2006 09:30:35 +1100

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 On Thu, Nov 09, 2006 at 10:22:53PM +0000, David Laight wrote:
 > On Tue, Nov 07, 2006 at 02:57:06PM +0100, Julio M. Merino Vidal wrote:
 > >=20
 > > The attached patch makes vnd use the regular VOP_READ and VOP_WRITE
 > > operations iff bmap/strategy are _not_ available
 >=20
 > Would that let it work with sparse files ?
 > If so a mount option might be useful.
 
 To do this (and maybe even the just-added usage?), it needs to be able
 to sleep, and that needs some extra restructurinng around the worker
 thread - at least last time I looked.  A worthy goal, though.
 
 --
 Dan.
 
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