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On Wed, 29 Jan 2003 17:25:19 +0000, Russell King [off-list ref] said:

  Russell> I was only concerned because it looks like it might be a
  Russell> problem on some implementations, and I was wondering what
  Russell> would happen on ia64 if a timer interrupt occurs between
  Russell> reading jiffies and itm_next in gettimeoffset.

Perhaps I'm missing something, but I thought that in this case,
fr_write_unlock() would increment the counter and cause the reader(s)
to restart the reading of the time-related variables.

I do agree that, in general, there is a potential deadlock if
gettimeoffset() is not lock-free.

	--david
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