Subject: Re: Use vn_rdwr in vnd (Re: kern/34882)
To: Julio M. Merino Vidal <jmmv84@gmail.com>
From: Daniel Carosone <dan@geek.com.au>
List: tech-kern
Date: 11/10/2006 09:30:35
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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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