Nick Piggin <[EMAIL PROTECTED]> wrote: > > PF_MEMALLOC is really not a tool for tinkering. It is pretty specifically > used to prevent recursion into page reclaim, and to prevent low memory > deadlocks. > > The mm/swap_state.c code was the only legitimate tinkerer. Its concern > was addressed by the previous patch.
What previous patch? radix tree allocation doesn't use mempools, so this patch will cause add_to_swap() to oom the machine with radix tree node allocations. Now if we were to add __GFP_NOMEMALLOC in add_to_swap() then things would work as we want them to. The dm_crypt change looks OK. The code in mpage.c is saying "if we failed to allocate a correctly-sized bvec and if we're doing pageout then try to allocate a smaller-sized bvec instead". It's probably fairly useless, but afaict there's nothing in any of the other patches here which makes it redundant. - 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/
