spinlock: be consistent with memory order in acquire()/try_acquire()
spinlock: be consistent with memory order in acquire()/try_acquire()

bowlofstew/sv6,aclements/sv6,bowlofstew/sv6,bowlofstew/sv6,aclements/sv6,bowlofstew/sv6,bowlofstew/sv6,aclements/sv6,aclements/sv6,aclements/sv6