K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2010-06-08T16:17:47.005907Z
K 7
svn:log
V 214
Fix a sign bug that caused adaptive spinning in sx_xlock() to not work
properly.  Among other things it did not drop Giant while spinning
leading to livelocks.

Reviewed by:	rookie, kib, jmallett
MFC after:	3 days

END