[PATCH] Add comment that 64b atomics need to work with either LP64 or ILP32.

[Torvald Riegel]

This just adds a comment that even if 64b atomics are supported, the
code still needs to work under both LP64 and ILP32.  I'm not aware of a
general rule for supporting just LP64 or ILP32, but it's what seems to
result from the assumptions Joseph listed.

I suppose this is useful irrespective of Joseph's comment that moving to
stdint.h types generally would be useful; that would be future clean-up,
and even then there might be cases where we can't include stdint.h
easily (exposed headers, perhaps?).

Thoughts?


2015-01-22  Torvald Riegel  <triegel@redhat.com>

	* include/atomic.h: Add comment.

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