On Mon, Jul 27, 2020 at 12:25 PM Roman Gushchin <guro@xxxxxx> wrote:
>
> Do not use rlimit-based memory accounting for queue_stack maps.
> It has been replaced with the memcg-based memory accounting.
>
> Signed-off-by: Roman Gushchin <guro@xxxxxx>
Acked-by: Song Liu <songliubraving@xxxxxx>
> ---
> kernel/bpf/queue_stack_maps.c | 16 ++++------------
> 1 file changed, 4 insertions(+), 12 deletions(-)
>
> diff --git a/kernel/bpf/queue_stack_maps.c b/kernel/bpf/queue_stack_maps.c
> index 44184f82916a..92e73c35a34a 100644
> --- a/kernel/bpf/queue_stack_maps.c
> +++ b/kernel/bpf/queue_stack_maps.c
> @@ -66,29 +66,21 @@ static int queue_stack_map_alloc_check(union bpf_attr *attr)
>
> static struct bpf_map *queue_stack_map_alloc(union bpf_attr *attr)
> {
> - int ret, numa_node = bpf_map_attr_numa_node(attr);
> - struct bpf_map_memory mem = {0};
> + int numa_node = bpf_map_attr_numa_node(attr);
> struct bpf_queue_stack *qs;
> - u64 size, queue_size, cost;
> + u64 size, queue_size;
>
> size = (u64) attr->max_entries + 1;
> - cost = queue_size = sizeof(*qs) + size * attr->value_size;
> -
> - ret = bpf_map_charge_init(&mem, cost);
> - if (ret < 0)
> - return ERR_PTR(ret);
> + queue_size = sizeof(*qs) + size * attr->value_size;
>
> qs = bpf_map_area_alloc(queue_size, numa_node);
> - if (!qs) {
> - bpf_map_charge_finish(&mem);
> + if (!qs)
> return ERR_PTR(-ENOMEM);
> - }
>
> memset(qs, 0, sizeof(*qs));
>
> bpf_map_init_from_attr(&qs->map, attr);
>
> - bpf_map_charge_move(&qs->map.memory, &mem);
> qs->size = size;
>
> raw_spin_lock_init(&qs->lock);
> --
> 2.26.2
>
