Yes. It's in Christian's vfs.ctime branch:

https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git/log/?h=vfs.ctime

On Wed, 2023-08-09 at 14:38 -0400, Mike Marshall wrote:

I've been following this patch on fsdevel... is there a
remote I could fetch with a branch that has this in it?

-Mike

On Wed, Aug 9, 2023 at 8:32 AM Christian Brauner [off-list ref] wrote:

quoted

On Mon, Aug 07, 2023 at 03:38:39PM -0400, Jeff Layton wrote:

quoted

Now that all of the update_time operations are prepared for it, we can
drop the timespec64 argument from the update_time operation. Do that and
remove it from some associated functions like inode_update_time and
inode_needs_update_time.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
 fs/bad_inode.c           |  3 +--
 fs/btrfs/inode.c         |  3 +--
 fs/btrfs/volumes.c       |  4 +---
 fs/fat/fat.h             |  3 +--
 fs/fat/misc.c            |  2 +-
 fs/gfs2/inode.c          |  3 +--
 fs/inode.c               | 30 +++++++++++++-----------------
 fs/overlayfs/inode.c     |  2 +-
 fs/overlayfs/overlayfs.h |  2 +-
 fs/ubifs/file.c          |  3 +--
 fs/ubifs/ubifs.h         |  2 +-
 fs/xfs/xfs_iops.c        |  1 -
 include/linux/fs.h       |  4 ++--

This was missing the conversion of fs/orangefs orangefs_update_time()
causing the build to fail. So at some point kbuild will yell here.
Fwiw, I've fixed that up in-tree.

Cheers,
-- 
Jeff Layton [off-list ref]