Re: [PATCH bpf-next v2 22/35] bpf: eliminate rlimit-based memory accounting for bpf ringbuffer

On Mon, Jul 27, 2020 at 12:21 PM Roman Gushchin [off-list ref] wrote:

Do not use rlimit-based memory accounting for bpf ringbuffer.
It has been replaced with the memcg-based memory accounting.

bpf_ringbuf_alloc() can't return anything except ERR_PTR(-ENOMEM)
and a valid pointer, so to simplify the code make it return NULL
in the first case. This allows to drop a couple of lines in
ringbuf_map_alloc() and also makes it look similar to other memory
allocating function like kmalloc().

Signed-off-by: Roman Gushchin <redacted>
---

LGTM.

Acked-by: Andrii Nakryiko <redacted>

 kernel/bpf/ringbuf.c | 24 ++++--------------------
 1 file changed, 4 insertions(+), 20 deletions(-)

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