On Mon 27-11-17 19:32:18, Michal Hocko wrote: > On Mon 27-11-17 09:25:16, Andi Kleen wrote: [...] > > The reason the limit was there originally because it allows a DoS > > attack against the kernel by filling all unswappable memory up with VMAs. > > We can reduce the effect by accounting vmas to memory cgroups.
As it turned out we already do.
vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC|SLAB_ACCOUNT);
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Michal Hocko
SUSE Labs
