On Wed, 13 Aug 2008, Andrew Morton wrote: > > #2: I thought you said there were things that want to sleep in the region? If so, spinlocks will work as long as you don't have CONFIG_PREEMPT or lock validation (there's no way to deadlock thanks to all the lock getters using the "trylock" variant), but will blow up because a successful trylock will obviously also disable preemption and/or trigger all the lock detection. So if there are potential sleepers, you'd need the mutex instead. Linus
