From: Ian Kent <raven@themaw.net>
To: David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, nfsv4@linux-nfs.org,
steved@redhat.com, torvalds@osdl.org, linux-cachefs@redhat.com,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing [try #13]
Date: Tue, 05 Sep 2006 18:20:11 +0800 [thread overview]
Message-ID: <1157451611.4133.22.camel@raven.themaw.net> (raw)
In-Reply-To: <3698.1157449249@warthog.cambridge.redhat.com>
On Tue, 2006-09-05 at 10:40 +0100, David Howells wrote:
> Ian Kent <raven@themaw.net> wrote:
>
> > autofs v4 doesn't rely on mkdir never returning EACCESS just that it
> > return EEXIST if the directory exists. Never the less if the behavior of
> > stat will work in this case I'll change v4 to do it the way you suggest
> > (as v5 does already).
>
> As long as you don't rely on stat...mkdir working. That can go wrong if the
> dentry gets booted from the dcache by memory pressure in the "...".
I'm not clear on your point here.
If I stat a path and it exists then all is good and I'm done.
If I stat a path and I get something other than ENOENT then all is bad
and I return fail.
Otherwise I can just attempt to create the directory and fail if all is
bad with that.
This approach works in the current situation and would work for the
other situations in which that same process is used, not just for NFS
filesystems.
>
> David
> -
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next prev parent reply other threads:[~2006-09-05 10:20 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-30 19:31 [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing [try #13] David Howells
2006-08-30 19:31 ` [PATCH 1/7] FS-Cache: Provide a filesystem-specific sync'able page bit " David Howells
2006-08-30 19:31 ` [PATCH 2/7] FS-Cache: Generic filesystem caching facility " David Howells
2006-08-30 19:32 ` [PATCH 3/7] FS-Cache: Release page->private after failed readahead " David Howells
2006-08-30 19:32 ` [PATCH 4/7] FS-Cache: Make kAFS use FS-Cache " David Howells
2006-08-30 19:32 ` [PATCH 5/7] NFS: Use local caching " David Howells
2006-08-30 19:32 ` [PATCH 6/7] FS-Cache: CacheFiles: ia64: missing copy_page export " David Howells
2006-08-30 19:32 ` [PATCH 7/7] FS-Cache: CacheFiles: A cache that backs onto a mounted filesystem " David Howells
2006-08-30 19:52 ` [PATCH 0/7] Permit filesystem local caching and NFS superblock sharing " Andrew Morton
2006-08-30 20:37 ` David Howells
2006-08-30 20:55 ` Andrew Morton
2006-08-31 9:58 ` David Howells
2006-08-31 17:21 ` Andrew Morton
2006-08-31 17:26 ` Trond Myklebust
2006-08-31 17:42 ` David Howells
2006-08-31 18:04 ` Andrew Morton
2006-09-01 13:08 ` David Howells
2006-09-01 16:34 ` Andrew Morton
2006-09-01 17:00 ` Trond Myklebust
2006-09-02 2:50 ` Andrew Morton
2006-09-02 4:11 ` Ian Kent
2006-09-02 5:58 ` Andrew Morton
2006-09-03 6:21 ` Ian Kent
2006-09-03 6:30 ` Andrew Morton
2006-09-03 6:43 ` Ian Kent
2006-09-03 16:58 ` Andrew Morton
2006-09-04 2:23 ` Ian Kent
2006-09-04 5:40 ` Ian Kent
2006-09-02 4:49 ` Ian Kent
2006-09-04 11:52 ` David Howells
2006-09-04 11:52 ` David Howells
2006-09-04 13:24 ` Ian Kent
2006-09-05 1:57 ` Trond Myklebust
2006-09-05 2:55 ` Ian Kent
2006-09-05 3:50 ` Trond Myklebust
2006-09-05 4:03 ` Ian Kent
2006-09-05 4:53 ` Trond Myklebust
2006-09-05 6:06 ` Ian Kent
2006-09-05 7:01 ` Ian Kent
2006-09-05 12:52 ` Trond Myklebust
2006-09-06 4:54 ` Ian Kent
2006-09-05 9:40 ` David Howells
2006-09-05 10:20 ` Ian Kent [this message]
2006-09-05 10:37 ` David Howells
2006-09-05 12:20 ` Ian Kent
2006-09-05 13:38 ` David Howells
2006-09-06 4:58 ` Ian Kent
2006-09-06 9:51 ` David Howells
2006-09-06 12:46 ` Trond Myklebust
2006-09-06 13:24 ` David Howells
2006-09-07 5:30 ` Ian Kent
2006-09-07 6:17 ` Trond Myklebust
2006-09-07 7:40 ` Ian Kent
2006-09-05 9:48 ` David Howells
2006-09-05 10:14 ` Ian Kent
2006-09-05 9:57 ` David Howells
2006-09-05 12:47 ` Trond Myklebust
2006-09-05 12:53 ` Trond Myklebust
2006-09-05 13:40 ` David Howells
2006-09-06 10:27 ` Ian Kent
2006-09-04 13:46 ` David Howells
2006-09-04 15:00 ` Ian Kent
2006-09-05 4:11 ` Ian Kent
2006-09-05 4:17 ` Trond Myklebust
2006-09-05 2:23 ` Trond Myklebust
2006-09-05 3:01 ` Ian Kent
2006-09-05 4:05 ` Trond Myklebust
2006-09-05 4:06 ` Ian Kent
2006-09-05 4:57 ` Trond Myklebust
2006-09-05 6:45 ` Ian Kent
2006-09-05 7:07 ` Ian Kent
2006-09-04 18:20 ` David Howells
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