linux-kernel - Re: [RFC][PATCH 06/10] cifs: define inode-level cache object and register them

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Message-ID: <18628.1277502398@redhat.com>
Date:	Fri, 25 Jun 2010 22:46:38 +0100
From:	David Howells <dhowells@...hat.com>
To:	Jeff Layton <jlayton@...ba.org>
Cc:	dhowells@...hat.com, Suresh Jayaraman <sjayaraman@...e.de>,
	Steve French <smfrench@...il.com>, linux-cifs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	samba-technical@...ts.samba.org
Subject: Re: [RFC][PATCH 06/10] cifs: define inode-level cache object and register them

Jeff Layton <jlayton@...ba.org> wrote:

> Looks like it mostly uses the ctime. IMO, the mtime would be a better
> choice since it changes less frequently, but I don't guess that it
> matters very much.

I'd've thought mtime changes more frequently since that's altered when data is
written.  ctime is changed when attributes are changed.

Note that Ext4 appears to have a file creation time field in its inode
(struct ext4_inode::i_crtime[_extra]).  Can Samba be made to use that?

David
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