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Hi Ben. On Thu, 2005-06-02 at 17:36, Benjamin Herrenschmidt wrote: > Whatever you guys decide to do (I actually do sys_sync() before freezing > on pmac and yes, it takes sometimes way too long), to be uber-safe, we > could/should _also_ do sync after freezing userland processes and before > freezing kernel threads (that is, splitting here). In fact, that would > help also avoid deadlocks where a frozen kernel thread is holding a > semaphore preventing a process from freezing. > > That way, if we sys_sync() once processes are sleeping and before kernel > threads are, we pretty-much make sure no new dirty buffer will appear. > > Anyway, that's mostly food for thoughts at this point I fully agree, and that's what I'm already doing. Nothing I can do about Pavel not seeing logic, so guess I just have to hope everyone else does :) Regards, Nigel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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