On Sat, 9 Jun 2007, Andi Kleen wrote: > > Why was it not allowed? Because interrupts are disabled? > > Allocating memory during page out under low memory could > lead to deadlocks. That is because Linux used to make no attempt > to limit dirty pages for anonymous mappings and then you could > end up with most of your memory dirty and not enough > memory cleanable for page out and then when page out > needs more memory you could be dead. > > [yes that implies that mmap over NFS was always broken]
Right. We got that fixed in 2.6.19. > Now there is a anon dirty limit since a few releases, but I'm not > fully convinced it solves the problem completely. A gut feeling or is there more? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
