Re: [PATCH 0/3] fs/sysv: stop using write_supers and s_dirt

On Fri, 2012-07-13 at 14:42 -0700, Andrew Morton wrote:

The issue Alan raised around the superblock timestamp is still up in
the air.  I guess he's a slow typist ;)

My take is "no, we don't need to do that any more" - surely all Linux
systems have a functional hardware clock.  But the changelog should be
updated to describe and justify the decision.

While I do trust such system existed and may be even still exist, I
doubt that Linux sysv FS implementation is of any help for them because
it updates the superblock time-stamp _only_ if there was write activity,
otherwise it does not. So you cannot rely on our time-stamps at all
anyway. My patches just make it update the time-stamp more rarely.

-- 
Best Regards,
Artem Bityutskiy