From: Shakeel Butt <redacted>
Date: Wed, 27 Jun 2018 15:16:42 -0700

Currently the kernel accounts the memory for network traffic through
mem_cgroup_[un]charge_skmem() interface. However the memory accounted
only includes the truesize of sk_buff which does not include the size of
sock objects. In our production environment, with opt-out kmem
accounting, the sock kmem caches (TCP[v6], UDP[v6], RAW[v6], UNIX) are
among the top most charged kmem caches and consume a significant amount
of memory which can not be left as system overhead. So, this patch
converts the kmem caches of all sock objects to SLAB_ACCOUNT.

Signed-off-by: Shakeel Butt <redacted>
Suggested-by: Eric Dumazet <edumazet@google.com>
---
Changelog since v1:
- Instead of specific sock kmem_caches, convert all sock kmem_caches to
  use SLAB_ACCOUNT.

Applied, thank you.