mirror of
https://git.notmuchmail.org/git/notmuch
synced 2024-12-12 04:24:51 +01:00
123 lines
4.8 KiB
Text
123 lines
4.8 KiB
Text
|
From: Steve French <smfrench@gmail.com>
|
||
|
|
Subject: Re: [RFC][PATCH 06/10] cifs: define inode-level cache object and
|
||
|
|
register them
|
||
|
|
Date: Fri, 25 Jun 2010 18:05:30 -0500
|
||
|
|
Lines: 51
|
||
|
|
Message-ID: <AANLkTilOTrHLvLv4XWYZO6xCnYZgYT7gO2M-oKZ6VvqM@mail.gmail.com>
|
||
|
|
References: <20100625125306.7f9b1966@tlielax.poochiereds.net>
|
||
|
|
<4C24A606.5040001@suse.de>
|
||
|
|
<1277220214-3597-1-git-send-email-sjayaraman@suse.de>
|
||
|
|
<9822.1277312573@redhat.com>
|
||
|
|
<22697.1277470549@redhat.com>
|
||
|
|
<18628.1277502398@redhat.com>
|
||
|
|
<20100625182651.36800d06@tlielax.poochiereds.net>
|
||
|
|
Mime-Version: 1.0
|
||
|
|
Content-Type: text/plain; charset=ISO-8859-1
|
||
|
|
Content-Transfer-Encoding: QUOTED-PRINTABLE
|
||
|
|
Cc: David Howells <dhowells@redhat.com>,
|
||
|
|
Suresh Jayaraman <sjayaraman@suse.de>,
|
||
|
|
linux-cifs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
|
||
|
|
linux-kernel@vger.kernel.org, samba-technical@lists.samba.org,
|
||
|
|
Jeff Layton <jlayton@redhat.com>
|
||
|
|
To: Jeff Layton <jlayton@samba.org>,
|
||
|
|
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
|
||
|
|
Mingming Cao <mcao@us.ibm.com>
|
||
|
|
X-From: linux-kernel-owner@vger.kernel.org Sat Jun 26 01:05:41 2010
|
||
|
|
Return-path: <linux-kernel-owner@vger.kernel.org>
|
||
|
|
Envelope-to: glk-linux-kernel-3@lo.gmane.org
|
||
|
|
Received: from vger.kernel.org ([209.132.180.67])
|
||
|
|
by lo.gmane.org with esmtp (Exim 4.69)
|
||
|
|
(envelope-from <linux-kernel-owner@vger.kernel.org>)
|
||
|
|
id 1OSHxs-0006a8-BA
|
||
|
|
for glk-linux-kernel-3@lo.gmane.org; Sat, 26 Jun 2010 01:05:40 +0200
|
||
|
|
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
|
||
|
|
id S1756188Ab0FYXFd convert rfc822-to-quoted-printable (ORCPT
|
||
|
|
<rfc822;glk-linux-kernel-3@m.gmane.org>);
|
||
|
|
Fri, 25 Jun 2010 19:05:33 -0400
|
||
|
|
Received: from mail-qw0-f46.google.com ([209.85.216.46]:51369 "EHLO
|
||
|
|
mail-qw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
|
||
|
|
with ESMTP id S1751575Ab0FYXFb convert rfc822-to-8bit (ORCPT
|
||
|
|
<rfc822;linux-kernel@vger.kernel.org>);
|
||
|
|
Fri, 25 Jun 2010 19:05:31 -0400
|
||
|
|
Received: by qwi4 with SMTP id 4so742644qwi.19
|
||
|
|
for <multiple recipients>; Fri, 25 Jun 2010 16:05:30 -0700 (PDT)
|
||
|
|
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
|
||
|
|
d=gmail.com; s=gamma;
|
||
|
|
h=domainkey-signature:mime-version:received:received:in-reply-to
|
||
|
|
:references:date:message-id:subject:from:to:cc:content-type
|
||
|
|
:content-transfer-encoding;
|
||
|
|
bh=6wKQkGOEeUGN4oPR3Nm4SRxtJr/EBwN8ENmpLnfdCDU=;
|
||
|
|
b=X7L6W0MtpQeW/4iBuj+oDlcP2yCJ3qwUs9lHBq1fRW6WdYblHXjmaN8o++3GDPLAg5
|
||
|
|
0MD07zxbYTGXRSrgCjCrGVm0tT88/6hY2a/rB8g68h/Qso2sIHa7B1iIN8JRR4pPWle0
|
||
|
|
sVjp9Xy/bQn2e0uE481Ii1TLHuWYA/QDXZreU=
|
||
|
|
DomainKey-Signature: a=rsa-sha1; c=nofws;
|
||
|
|
d=gmail.com; s=gamma;
|
||
|
|
h=mime-version:in-reply-to:references:date:message-id:subject:from:to
|
||
|
|
:cc:content-type:content-transfer-encoding;
|
||
|
|
b=B+7qQvdOpN5a/KCRrDbssKZX8D3SnP73VMHd9RpkqP9nCHCmSLAgbeH03+/m6CLVAo
|
||
|
|
G+NKWqWtknwPBkYqT/bdP2XEak1yr+0rjOqjUaNvaT7AhzsyHEJBkaNnsbS3qaRy39OP
|
||
|
|
S7OkAyHfmgdeNAHkKnKRF73hfpvgAqR9X4bn8=
|
||
|
|
Received: by 10.224.59.223 with SMTP id m31mr1130670qah.63.1277507130411; Fri,
|
||
|
|
25 Jun 2010 16:05:30 -0700 (PDT)
|
||
|
|
Received: by 10.229.46.136 with HTTP; Fri, 25 Jun 2010 16:05:30 -0700 (PDT)
|
||
|
|
In-Reply-To: <20100625182651.36800d06@tlielax.poochiereds.net>
|
||
|
|
Sender: linux-kernel-owner@vger.kernel.org
|
||
|
|
Precedence: bulk
|
||
|
|
List-ID: <linux-kernel.vger.kernel.org>
|
||
|
|
X-Mailing-List: linux-kernel@vger.kernel.org
|
||
|
|
Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1003154>
|
||
|
|
|
||
|
|
On Fri, Jun 25, 2010 at 5:26 PM, Jeff Layton <jlayton@samba.org> wrote:
|
||
|
|
>
|
||
|
|
> On Fri, 25 Jun 2010 22:46:38 +0100
|
||
|
|
> David Howells <dhowells@redhat.com> wrote:
|
||
|
|
>
|
||
|
|
> > Jeff Layton <jlayton@samba.org> wrote:
|
||
|
|
> >
|
||
|
|
> > > Looks like it mostly uses the ctime. IMO, the mtime would be a be=
|
||
|
|
tter
|
||
|
|
> > > choice since it changes less frequently, but I don't guess that i=
|
||
|
|
t
|
||
|
|
> > > matters very much.
|
||
|
|
> >
|
||
|
|
> > I'd've thought mtime changes more frequently since that's altered w=
|
||
|
|
hen data is
|
||
|
|
> > written. =A0ctime is changed when attributes are changed.
|
||
|
|
> >
|
||
|
|
>
|
||
|
|
> IIUC, updating mtime for a write is also an attribute change, and tha=
|
||
|
|
t
|
||
|
|
> affects ctime. According to the stat(2) manpage:
|
||
|
|
>
|
||
|
|
> =A0 =A0 =A0 The field st_ctime is changed by writing or by setting =A0=
|
||
|
|
inode =A0informa-
|
||
|
|
> =A0 =A0 =A0 tion (i.e., owner, group, link count, mode, etc.).
|
||
|
|
>
|
||
|
|
> > Note that Ext4 appears to have a file creation time field in its in=
|
||
|
|
ode
|
||
|
|
> > (struct ext4_inode::i_crtime[_extra]). =A0Can Samba be made to use =
|
||
|
|
that?
|
||
|
|
> >
|
||
|
|
>
|
||
|
|
> Is it exposed to userspace in any (standard) way? It would be handy t=
|
||
|
|
o
|
||
|
|
> have that. While we're wishing...it might also be nice to have a
|
||
|
|
> standard way to get at the i_generation from userspace too.
|
||
|
|
>
|
||
|
|
|
||
|
|
Yes - I have talked with MingMing and Aneesh about those (NFS may
|
||
|
|
someday be able to use those too).=A0 An obstacle in the past had been
|
||
|
|
that samba server stores its own fake creation time in an ndr encoded
|
||
|
|
xattr which complicates things.
|
||
|
|
|
||
|
|
MingMing/Annesh -
|
||
|
|
Xattr or other way to get at birth time?
|
||
|
|
|
||
|
|
|
||
|
|
--
|
||
|
|
Thanks,
|
||
|
|
|
||
|
|
Steve
|
||
|
|
|
||
|
|
|