bpf: allow to disable bpf map memory accounting

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We can simply set root memcg as the map's memcg to disable bpf memory
accounting. bpf_map_area_alloc is a little special as it gets the memcg
from current rather than from the map, so we need to disable GFP_ACCOUNT
specifically for it.

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Link: https://lore.kernel.org/r/20230210154734.4416-4-laoar.shao@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

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Yafang Shao 2023-02-10 15:47:33 +00:00 • committed by Alexei Starovoitov

parent ddef81b5fd

commit ee53cbfb1e

3 changed files with 13 additions and 3 deletions

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8

include/linux/bpf.h

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