From: Shakeel Butt shakeelb@google.com Subject: kvm, mm: account shadow page tables to kmemcg
The size of kvm's shadow page tables corresponds to the size of the guest virtual machines on the system. Large VMs can spend a significant amount of memory as shadow page tables which can not be left as system memory overhead. So, account shadow page tables to the kmemcg.
[shakeelb@google.com: replace (GFP_KERNEL|__GFP_ACCOUNT) with GFP_KERNEL_ACCOUNT] Link: http://lkml.kernel.org/r/20180629140224.205849-1-shakeelb@google.com Link: http://lkml.kernel.org/r/20180627181349.149778-1-shakeelb@google.com Signed-off-by: Shakeel Butt shakeelb@google.com Cc: Michal Hocko mhocko@kernel.org Cc: Johannes Weiner hannes@cmpxchg.org Cc: Vladimir Davydov vdavydov.dev@gmail.com Cc: Paolo Bonzini pbonzini@redhat.com Cc: Greg Thelen gthelen@google.com Cc: Radim Krčmář rkrcmar@redhat.com Cc: Peter Feiner pfeiner@google.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
arch/x86/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/mmu.c~kvm-mm-account-shadow-page-tables-to-kmemcg +++ a/arch/x86/kvm/mmu.c @@ -890,7 +890,7 @@ static int mmu_topup_memory_cache_page(s if (cache->nobjs >= min) return 0; while (cache->nobjs < ARRAY_SIZE(cache->objects)) { - page = (void *)__get_free_page(GFP_KERNEL); + page = (void *)__get_free_page(GFP_KERNEL_ACCOUNT); if (!page) return -ENOMEM; cache->objects[cache->nobjs++] = page; _