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Message-ID: <10304.1190417846@redhat.com>
Date: Sat, 22 Sep 2007 00:37:26 +0100
From: David Howells <dhowells@...hat.com>
To: unlisted-recipients:; (no To-header on input)
Cc: dhowells@...hat.com, Peter Staubach <staubach@...hat.com>,
viro@....linux.org.uk, hch@...radead.org,
Trond.Myklebust@...app.com, sds@...ho.nsa.gov,
casey@...aufler-ca.com, linux-kernel@...r.kernel.org,
selinux@...ho.nsa.gov, linux-security-module@...r.kernel.org
Subject: Re: [PATCH 14/22] NFS: Use local caching
David Howells <dhowells@...hat.com> wrote:
> Peter Staubach <staubach@...hat.com> wrote:
>
> > Did I miss the section where the modified semantics about which
> > mounted file systems can use the cache and which ones can not
> > was implemented?
>
> Yes.
fs/nfs/super.c:
case Opt_sharecache:
mnt->flags &= ~NFS_MOUNT_UNSHARED;
break;
case Opt_nosharecache:
mnt->flags |= NFS_MOUNT_UNSHARED;
mnt->options &= ~NFS_OPTION_FSCACHE;
break;
case Opt_fscache:
/* sharing is mandatory with fscache */
mnt->options |= NFS_OPTION_FSCACHE;
mnt->flags &= ~NFS_MOUNT_UNSHARED;
break;
case Opt_nofscache:
mnt->options &= ~NFS_OPTION_FSCACHE;
break;
Hmmm... Actually, I'm not sure this is sufficient.
David
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