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103 lines
4.6 KiB
Text
103 lines
4.6 KiB
Text
From: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
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Subject: Re: [RFC][PATCH 04/10] cifs: define server-level cache index objects
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and register them with FS-Cache
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Date: Wed, 23 Jun 2010 11:04:39 +0530
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Lines: 61
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Message-ID: <4C219CEF.5000003@suse.de>
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References: <yes> <1277220198-3522-1-git-send-email-sjayaraman@suse.de> <20100622175214.4c56234f@corrin.poochiereds.net>
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Mime-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 7bit
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Cc: Steve French <smfrench-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
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David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
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To: Jeff Layton <jlayton-vpEMnDpepFuMZCB2o+C8xQ@public.gmane.org>
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X-From: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Wed Jun 23 07:34:50 2010
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Return-path: <linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
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Envelope-to: glkc-linux-cifs-1dZseelyfdZg9hUCZPvPmw@public.gmane.org
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Received: from vger.kernel.org ([209.132.180.67])
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by lo.gmane.org with esmtp (Exim 4.69)
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(envelope-from <linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>)
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id 1ORIbp-0002v4-3W
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for glkc-linux-cifs-1dZseelyfdZg9hUCZPvPmw@public.gmane.org; Wed, 23 Jun 2010 07:34:49 +0200
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Received: (majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org) by vger.kernel.org via listexpand
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id S1750954Ab0FWFes (ORCPT <rfc822;glkc-linux-cifs@m.gmane.org>);
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Wed, 23 Jun 2010 01:34:48 -0400
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rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
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id S1750809Ab0FWFes (ORCPT <rfc822;linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>);
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Wed, 23 Jun 2010 01:34:48 -0400
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Wed, 23 Jun 2010 07:34:46 +0200 (CEST)
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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
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In-Reply-To: <20100622175214.4c56234f-4QP7MXygkU+dMjc06nkz3ljfA9RmPOcC@public.gmane.org>
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Sender: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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Precedence: bulk
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List-ID: <linux-cifs.vger.kernel.org>
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X-Mailing-List: linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1001998>
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On 06/23/2010 03:22 AM, Jeff Layton wrote:
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> On Tue, 22 Jun 2010 20:53:18 +0530
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> Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org> wrote:
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>
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>> Define server-level cache index objects (as managed by TCP_ServerInfo structs).
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>> Each server object is created in the CIFS top-level index object and is itself
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>> an index into which superblock-level objects are inserted.
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>>
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>> Currently, the server objects are keyed by hostname.
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>>
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>> Signed-off-by: Suresh Jayaraman <sjayaraman-l3A5Bk7waGM@public.gmane.org>
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>> ---
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>> fs/cifs/Makefile | 2 +-
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>> fs/cifs/cache.c | 25 +++++++++++++++++++++++++
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>> fs/cifs/cifsglob.h | 3 +++
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>> fs/cifs/connect.c | 4 ++++
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>> fs/cifs/fscache.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
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>> fs/cifs/fscache.h | 12 ++++++++++++
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>> 6 files changed, 92 insertions(+), 1 deletion(-)
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>> create mode 100644 fs/cifs/fscache.c
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>>
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>> Index: cifs-2.6/fs/cifs/Makefile
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>> ===================================================================
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>> --- cifs-2.6.orig/fs/cifs/Makefile
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>> +++ cifs-2.6/fs/cifs/Makefile
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>> @@ -12,4 +12,4 @@ cifs-$(CONFIG_CIFS_UPCALL) += cifs_spneg
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>>
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>> cifs-$(CONFIG_CIFS_DFS_UPCALL) += dns_resolve.o cifs_dfs_ref.o
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>>
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>> -cifs-$(CONFIG_CIFS_FSCACHE) += cache.o
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>> +cifs-$(CONFIG_CIFS_FSCACHE) += fscache.o cache.o
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>> Index: cifs-2.6/fs/cifs/cache.c
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>> ===================================================================
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>> --- cifs-2.6.orig/fs/cifs/cache.c
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>> +++ cifs-2.6/fs/cifs/cache.c
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>> @@ -51,3 +51,28 @@ void cifs_fscache_unregister(void)
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>> fscache_unregister_netfs(&cifs_fscache_netfs);
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>> }
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>>
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>> +/*
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>> + * Server object currently keyed by hostname
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>> + */
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>> +static uint16_t cifs_server_get_key(const void *cookie_netfs_data,
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>> + void *buffer, uint16_t maxbuf)
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>> +{
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>> + const struct TCP_Server_Info *server = cookie_netfs_data;
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>> + uint16_t len = strnlen(server->hostname, sizeof(server->hostname));
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>> +
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>
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> Would a tuple of address/family/port be a better choice here? Imagine I
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> mount "foo" and then later mount "foor.bar.baz". If they are the same
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> address and only the UNC differs, then you won't get the benefit of
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> the cache, right?
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>
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Good point. I'll fix it up when I do a respin.
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Thanks,
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--
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Suresh Jayaraman
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