K 10
svn:author
V 3
avg
K 8
svn:date
V 27
2019-10-07T08:00:54.007393Z
K 7
svn:log
V 264
ZFS: unconditionally use atomic_swap_64

Previously, the code used a plain store on platforms that lacked
atomic_swap_64 and possibly some other platforms as the condition worked
only if atomic_swap_64 was a macro.

MFC after:	1 week
X-MFC after:	r353166, r353167

END