Re: [PATCH] btrfs: update i_version in update_dev_time

[David Sterba]

On Thu, Jun 15, 2023 at 08:49:45AM -0400, Jeff Layton wrote:
> When updating the ctime, we also want to update i_version.
> 
> Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
> ---
>  fs/btrfs/volumes.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> This is just something I noticed by inspection. There is probably no way
> to test this today unless you can somehow get to this inode via nfsd.
> Still, I think it's the right thing to do for consistency's sake.

I don't see anything wrong with setting the iversion bit, however I also
don't see where this would be useful. Agreed with the consistency,
otherwise the time is updated when device super block is wiped or a
device initialized, both are big events so missing that due to lack of
iversion update seems unlikely. I'll add it to the queue, thanks.