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Date:   Fri, 9 Jun 2023 15:10:48 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Jeff Layton <jlayton@kernel.org>
Cc:     Christian Brauner <brauner@kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Brad Warrum <bwarrum@linux.ibm.com>,
        Ritu Agarwal <rituagar@linux.ibm.com>,
        Arnd Bergmann <arnd@arndb.de>, Ian Kent <raven@themaw.net>,
        "Tigran A. Aivazian" <aivazian.tigran@gmail.com>,
        Jeremy Kerr <jk@ozlabs.org>, Ard Biesheuvel <ardb@kernel.org>,
        Namjae Jeon <linkinjeon@kernel.org>,
        Sungjong Seo <sj1557.seo@samsung.com>,
        Bob Peterson <rpeterso@redhat.com>,
        Andreas Gruenbacher <agruenba@redhat.com>,
        Steve French <sfrench@samba.org>,
        Paulo Alcantara <pc@manguebit.com>,
        Ronnie Sahlberg <lsahlber@redhat.com>,
        Shyam Prasad N <sprasad@microsoft.com>,
        Tom Talpey <tom@talpey.com>,
        John Johansen <john.johansen@canonical.com>,
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        linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
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        apparmor@lists.ubuntu.com, linux-security-module@vger.kernel.org
Subject: Re: [PATCH 0/9] fs: add some missing ctime updates
Message-ID: <2023060931-magazine-nickname-f386@gregkh>
References: <20230609125023.399942-1-jlayton@kernel.org>
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On Fri, Jun 09, 2023 at 08:50:14AM -0400, Jeff Layton wrote:
> While working on a patch series to change how we handle the ctime, I
> found a number of places that update the mtime without a corresponding
> ctime update. POSIX requires that when the mtime is updated that the
> ctime also be updated.
> 
> Note that these are largely untested other than for compilation, so
> please review carefully. These are a preliminary set for the upcoming
> rework of how we handle the ctime.
> 
> None of these seem to be very crucial, but it would be nice if
> various maintainers could pick these up for v6.5. Please let me know if
> you do.
> 
> Jeff Layton (9):
>   ibmvmc: update ctime in conjunction with mtime on write
>   usb: update the ctime as well when updating mtime after an ioctl
>   autofs: set ctime as well when mtime changes on a dir
>   bfs: update ctime in addition to mtime when adding entries
>   efivarfs: update ctime when mtime changes on a write
>   exfat: ensure that ctime is updated whenever the mtime is
>   gfs2: update ctime when quota is updated
>   apparmor: update ctime whenever the mtime changes on an inode
>   cifs: update the ctime on a partial page write
> 
>  drivers/misc/ibmvmc.c             |  2 +-
>  drivers/usb/core/devio.c          | 16 ++++++++--------
>  fs/autofs/root.c                  |  6 +++---
>  fs/bfs/dir.c                      |  2 +-
>  fs/efivarfs/file.c                |  2 +-
>  fs/exfat/namei.c                  |  8 ++++----
>  fs/gfs2/quota.c                   |  2 +-
>  fs/smb/client/file.c              |  2 +-
>  security/apparmor/apparmorfs.c    |  7 +++++--
>  security/apparmor/policy_unpack.c | 11 +++++++----
>  10 files changed, 32 insertions(+), 26 deletions(-)
> 
> -- 
> 2.40.1
> 

All of these need commit log messages, didn't checkpatch warn you about
that?

thanks,

greg k-h