K 10
svn:author
V 3
alc
K 8
svn:date
V 27
2017-12-19T17:07:50.323017Z
K 7
svn:log
V 414
Document the semantics of atomic_thread_fence operations.

Add atomic_load_<type> and atomic_store_<type>, and explain why they
exist.

Define the synchronizes-with relationship and its effects.

Reorder and revise some of the existing text.  For example, more
precisely describe when ordinary accesses are atomic.

Reviewed by:	jhb, kib
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D13522

END