Messages in this thread | | | Date | Fri, 24 Oct 2008 07:34:02 +0200 | From | Nick Piggin <> | Subject | Re: [RFC][PATCH] lru_add_drain_all() don't use schedule_on_each_cpu() |
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On Fri, Oct 24, 2008 at 02:29:18PM +0900, KOSAKI Motohiro wrote: > > > > I don't see a better way to solve it, other than avoiding lru_add_drain_all > > > > > > Well, > > > > > > Unfortunately, lru_add_drain_all is also used some other VM place > > > (page migration and memory hotplug). > > > and page migration's usage is the same of this mlock usage. > > > (1. grab mmap_sem 2. call lru_add_drain_all) > > > > > > Then, change mlock usage isn't solution ;-) > > > > No, not mlock alone. > > Ah, I see. > It seems difficult but valuable. I'll think this way for a while.
Well, I think it would be nice if we can reduce lru_add_drain_all, however your patch might be the least intrusive and best short term solution.
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