From: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
Subject: Re: [RFC][PATCH 06/10] cifs: define inode-level cache object and
 register them
Date: Fri, 25 Jun 2010 18:20:14 +0530
Lines: 24
Message-ID: <4C24A606.5040001@suse.de>
References: <1277220214-3597-1-git-send-email-sjayaraman@suse.de> <yes> <9822.1277312573@redhat.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Cc: Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
To: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
X-From: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Fri Jun 25 14:50:26 2010
Return-path: <linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Envelope-to: glkc-linux-cifs-1dZseelyfdZg9hUCZPvPmw@public.gmane.org
Received: from vger.kernel.org ([209.132.180.67])
	by lo.gmane.org with esmtp (Exim 4.69)
	(envelope-from <linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>)
	id 1OS8MR-0007EU-OS
	for glkc-linux-cifs-1dZseelyfdZg9hUCZPvPmw@public.gmane.org; Fri, 25 Jun 2010 14:50:24 +0200
Received: (majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org) by vger.kernel.org via listexpand
	id S1754607Ab0FYMuX (ORCPT <rfc822;glkc-linux-cifs@m.gmane.org>);
	Fri, 25 Jun 2010 08:50:23 -0400
Received: from cantor2.suse.de ([195.135.220.15]:38716 "EHLO mx2.suse.de"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S1753675Ab0FYMuW (ORCPT <rfc822;linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>);
	Fri, 25 Jun 2010 08:50:22 -0400
Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.221.2])
	by mx2.suse.de (Postfix) with ESMTP id B05E686A2E;
	Fri, 25 Jun 2010 14:50:21 +0200 (CEST)
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091130 SUSE/3.0.0-1.1.1 Thunderbird/3.0
In-Reply-To: <9822.1277312573-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Sender: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Precedence: bulk
List-ID: <linux-cifs.vger.kernel.org>
X-Mailing-List: linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1002946>

On 06/23/2010 10:32 PM, David Howells wrote:
> Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org> wrote:
> 
>> Define inode-level data storage objects (managed by cifsInodeInfo structs).
>> Each inode-level object is created in a super-block level object and is
>> itself a data storage object in to which pages from the inode are stored.
>>
>> The inode object is keyed by UniqueId. The coherency data being used is
>> LastWriteTime and the file size.
> 
> Isn't there a file creation time too?

I think the creation time is currently being ignored as we won't be able
to accomodate in POSIX stat struct.

> I take it you don't support caching on files that are open for writing at this
> time?
> 

Yes.


-- 
Suresh Jayaraman