From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: Bob Bell
<b_linuxnfs-Y/+76LoPTq9wBoktGHYdvgC/G2K4zDHf@public.gmane.org>,
"Muntz, Daniel" <Dan.Muntz@netapp.com>,
Steve Dickson <SteveD@redhat.com>,
NFS list <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 2/3] NFS: Add NFS_MOUNT_NONEGDE flag to avoid caching negative dentries
Date: Fri, 18 Jan 2008 16:17:04 -0500 [thread overview]
Message-ID: <1200691024.13348.17.camel@heimdal.trondhjem.org> (raw)
In-Reply-To: <16A4251B-73DA-4F2B-BA86-6A5890CC727B@oracle.com>
On Fri, 2008-01-18 at 16:12 -0500, Chuck Lever wrote:
> When would anyone want to use lookupcache=none -- what exactly would
> it do? How is it different than actimeo=0?
It would be very different. The idea of lookupcache=none would be to
turn off the directory mtime-based revalidation algorithm in
nfs_lookup_revalidate().
IOW: you would force an on-the-wire LOOKUP call for each dentry
revalidation.
Cheers
Trond
next prev parent reply other threads:[~2008-01-18 21:18 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-15 16:27 [PATCH 0/3] Intro: Better handling coarse-grained timestamps Bob Bell
[not found] ` <20080115162658.GA18911-y89O8yXFYpDSsb2jM9SCN5/hYUUxywnI@public.gmane.org>
2008-01-15 16:29 ` [PATCH 1/3] NFS: Check nlinks count Bob Bell
2008-01-15 16:30 ` [PATCH 2/3] NFS: Add NFS_MOUNT_NONEGDE flag to avoid caching negative dentries Bob Bell
[not found] ` <20080115163013.GC18911-y89O8yXFYpDSsb2jM9SCN5/hYUUxywnI@public.gmane.org>
2008-01-15 16:52 ` Trond Myklebust
[not found] ` <1200415972.7702.7.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2008-01-15 17:04 ` Chuck Lever
2008-01-15 17:14 ` Trond Myklebust
2008-01-16 1:22 ` Bob Bell
[not found] ` <20080116012209.GB26010-y89O8yXFYpDSsb2jM9SCN5/hYUUxywnI@public.gmane.org>
2008-01-16 2:42 ` Trond Myklebust
[not found] ` <1200451350.28088.43.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2008-01-16 12:49 ` Steve Dickson
[not found] ` <478DFD5A.1040501-AfCzQyP5zfLQT0dZR+AlfA@public.gmane.org>
2008-01-16 19:43 ` Muntz, Daniel
[not found] ` <01AE8AF878612047A442668306EAEB05018178E7-Ye0EzW0T4yEQ4vjYWPuN5KYtpRd4g51m@public.gmane.org>
2008-01-16 20:43 ` Trond Myklebust
[not found] ` <1200516219.6932.22.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2008-01-16 20:49 ` Chuck Lever
2008-01-16 21:12 ` Risto Bell
[not found] ` <478E7345.8080003-+wT8y+m8/X5BDgjK7y7TUQ@public.gmane.org>
2008-01-16 21:56 ` Trond Myklebust
[not found] ` <1200520574.15282.24.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2008-01-16 22:09 ` Chuck Lever
2008-01-16 23:21 ` Trond Myklebust
2008-01-18 15:29 ` Bob Bell
[not found] ` <20080118152902.GF7128-y89O8yXFYpDSsb2jM9SCN5/hYUUxywnI@public.gmane.org>
2008-01-18 20:00 ` Muntz, Daniel
[not found] ` <01AE8AF878612047A442668306EAEB0501817BA4-Ye0EzW0T4yEQ4vjYWPuN5KYtpRd4g51m@public.gmane.org>
2008-01-19 1:28 ` Bob Bell
2008-01-18 21:12 ` Chuck Lever
2008-01-18 21:17 ` Trond Myklebust [this message]
2008-01-15 16:31 ` [PATCH 3/3] nfs-utils: Add nonegde mount option Bob Bell
[not found] ` <20080115163130.GD18911-y89O8yXFYpDSsb2jM9SCN5/hYUUxywnI@public.gmane.org>
2008-01-15 16:42 ` Chuck Lever
2008-01-16 1:13 ` Bob Bell
[not found] ` <20080116011305.GA26010-y89O8yXFYpDSsb2jM9SCN5/hYUUxywnI@public.gmane.org>
2008-01-16 20:45 ` Chuck Lever
2008-01-16 1:55 ` [PATCH 0/3] Intro: Better handling coarse-grained timestamps Bob Bell
[not found] ` <20080116015526.GC26010-y89O8yXFYpDSsb2jM9SCN5/hYUUxywnI@public.gmane.org>
2008-01-16 2:18 ` Trond Myklebust
[not found] ` <1200449912.28088.22.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2008-01-16 17:16 ` david m. richter
2008-01-16 19:47 ` Trond Myklebust
[not found] ` <1200512872.6932.8.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2008-01-16 20:09 ` david m. richter
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