Re: [PATCH net 3/3] bpf: do not test for PCPU_MIN_UNIT_SIZE before percpu allocations

From: Alexei Starovoitov
Date: Tue Oct 17 2017 - 11:55:16 EST


On Tue, Oct 17, 2017 at 04:55:54PM +0200, Daniel Borkmann wrote:
> PCPU_MIN_UNIT_SIZE is an implementation detail of the percpu
> allocator. Given we support __GFP_NOWARN now, lets just let
> the allocation request fail naturally instead. The two call
> sites from BPF mistakenly assumed __GFP_NOWARN would work, so
> no changes needed to their actual __alloc_percpu_gfp() calls
> which use the flag already.
>
> Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>

Acked-by: Alexei Starovoitov <ast@xxxxxxxxxx>