linux-ext4 - Re: [Bugme-new] [Bug 10276] New: directory ctime not updated by rename

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Message-ID: <20080318174608.GH10722@ZenIV.linux.org.uk>
Date:	Tue, 18 Mar 2008 17:46:09 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org,
	Christoph Hellwig <hch@....de>,
	bugme-daemon@...zilla.kernel.org,
	lasse-kernelbug-2008@...l.plastictree.net
Subject: Re: [Bugme-new] [Bug 10276] New: directory ctime not updated by rename

On Tue, Mar 18, 2008 at 10:00:23AM -0700, Andrew Morton wrote:

> Do we agree that this is a bug?  If so, is it a VFS thing or a per-fs
> thing?

The latter; all control over timestamps on directory operations is in
filesystems.  Which filesystem it is, BTW?  E.g. ext2 has
        dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
in ext2_set_link() (and the same in ext2_add_entry()/ext2_delete_entry()),
so on all paths in ext2_rename() both parents will get ctime and mtime
updated; so will the object being moved and the object being unlinked
(explicitly in ext2_rename()).
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