linux-kernel - Re: Pull request for FS-Cache, including NFS patches

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Message-ID: <13180.1229736005@redhat.com>
Date:	Sat, 20 Dec 2008 01:20:05 +0000
From:	David Howells <dhowells@...hat.com>
To:	Bryan Henderson <hbryan@...ibm.com>
Cc:	dhowells@...hat.com, "Andrew Morton" <akpm@...ux-foundation.org>,
	"Muntz, Daniel" <Dan.Muntz@...app.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	nfsv4@...ux-nfs.org, rwheeler@...hat.com, sfr@...b.auug.org.au,
	steved@...hat.com
Subject: Re: Pull request for FS-Cache, including NFS patches

Bryan Henderson <hbryan@...ibm.com> wrote:

> > > AFS was designed to support local disk cache, so with callbacks you can
> > > get a consistent system.
> > 
> > It's less the callbacks and more the data version number that's important.
> 
> Maybe for consistency, but for the performance benefits of local disk
> caching, I believe the callbacks are pretty important.

Indeed, but he said "so with callbacks you can get a _consistent_ system".

David
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