K 10
svn:author
V 7
attilio
K 8
svn:date
V 27
2012-10-09T14:32:30.886490Z
K 7
svn:log
V 297
Add an unified macro to deny ability from the compiler to reorder
instruction loads/stores at its will.
The macro __compiler_membar() is currently supported for both gcc and
clang, but kernel compilation will fail otherwise.

Reviewed by:	bde, kib
Discussed with:	dim, theraven
MFC after:	2 weeks

END