On Thu, 2011-08-25 at 20:49 +0200, Peter Zijlstra wrote: > the ARM LL/SC constraints pretty much mandate we do > preempt_disable()/preempt_enable() around them, My bad, that was MIPS, it states that portable programs should not issue load/store/prefetch insn inside a LL/SC region or the behaviour is undefined or somesuch. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href