Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Alexei Starovoitov says:

====================
bpf 2021-08-26

We've added 1 non-merge commit during the last 1 day(s):

1) Fix ringbuf helper function compatibility, from Daniel.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  bpf: Fix ringbuf helper function compatibility
====================

Link: https://lore.kernel.org/r/20210826153720.19083-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>