On Tue, 2002-06-11 at 11:44, Jun Sun wrote: > I see your point now. > > However, the race is not there. switch_mm() is only called from inside > schedule() function, which as a whole is preemption-safe. In other words, the > above event sequence won't cause a context switch until we exit from > schedule() function. > Yes, but the initial code I cited was explicitly not in the schedule function. It was an icache_flush_page() implementation. Just something to be careful of. I think it's going to bite more than a few people as a bug that's about impossible to track down... -Justin
