From: Milosz Tanski <milosz@adfin.com>
To: David Howells <dhowells@redhat.com>
Cc: "linux-cachefs@redhat.com" <linux-cachefs@redhat.com>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>
Subject: Re: FSCache: Cookie create and destroy semantics on file open
Date: Wed, 7 Aug 2013 08:08:28 -0400 [thread overview]
Message-ID: <4307898982697141463@unknownmsgid> (raw)
In-Reply-To: <26386.1375855465@warthog.procyon.org.uk>
Can you share those patches? I'd like to know what the approach you've
taken since I'm trying to figure out how to solve it for Ceph.
- M
On Aug 7, 2013, at 2:04 AM, David Howells <dhowells@redhat.com> wrote:
> Milosz Tanski <milosz@adfin.com> wrote:
>
>> I have a question for you about how added / removing the cookie for a
>> NFS inode works. Right the cache entry gets added when the file is
>> open. It gets revoked when the file re-opened in write mode. What
>> happens in this case.
>>
>> Open for read (create cookie) -> Open for write (destroy cookie) ->
>> Open for read (create cookie again)
>>
>> In this case, none of the 3 files were closed.
>
> No. The way NFS is doing this is wrong. I have been given some patches that
> should fix this, I think.
>
> David
next prev parent reply other threads:[~2013-08-07 12:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-07 4:40 FSCache: Cookie create and destroy semantics on file open Milosz Tanski
2013-08-07 6:04 ` David Howells
2013-08-07 12:08 ` Milosz Tanski [this message]
2013-08-07 12:46 ` David Howells
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