Re: [PATCH v7 12/13] ext4: switch to multigrain timestamps

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On Wed 20-09-23 16:53:26, Christian Brauner wrote:
> > You could put it behind an EXPERIMENTAL Kconfig option so that the
> > code stays in and can be used by the brave or foolish while it is
> > still being refined.
> 
> Given that the discussion has now fully gone back to the drawing board
> and this is a regression the honest thing to do is to revert the five
> patches that introduce the infrastructure:
> 
> ffb6cf19e063 ("fs: add infrastructure for multigrain timestamps")
> d48c33972916 ("tmpfs: add support for multigrain timestamps")
> e44df2664746 ("xfs: switch to multigrain timestamps")
> 0269b585868e ("ext4: switch to multigrain timestamps")
> 50e9ceef1d4f ("btrfs: convert to multigrain timestamps")
> 
> The conversion to helpers and cleanups are sane and should stay and can
> be used for any solution that gets built on top of it.
> 
> I'd appreciate a look at the branch here:
> git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.ctime.revert
> 
> survives xfstests.

Agreed. I think most of ffb6cf19e063 ("fs: add infrastructure for
multigrain timestamps") will be needed anyway but there's no problem in
reintroducing it in the new solution. I've checked the branch and the
reverts look good to me. Feel free to add:

Acked-by: Jan Kara <jack@xxxxxxx>

								Honza
-- 
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR



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