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bpf: move memory size checks to bpf_map_charge_init()

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Most bpf map types doing similar checks and bytes to pages
conversion during memory allocation and charging.

Let's unify these checks by moving them into bpf_map_charge_init().

Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Roman Gushchin
2019-05-29 18:03:59 -07:00
committed by Alexei Starovoitov
parent b936ca643a
commit c85d69135a
14 changed files with 20 additions and 67 deletions
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2
include/linux/bpf.h
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@@ -652,7 +652,7 @@ void bpf_map_put_with_uref(struct bpf_map *map);
void bpf_map_put(struct bpf_map *map);
int bpf_map_charge_memlock(struct bpf_map *map, u32 pages);
void bpf_map_uncharge_memlock(struct bpf_map *map, u32 pages);
int bpf_map_charge_init(struct bpf_map_memory *mem, u32 pages);
int bpf_map_charge_init(struct bpf_map_memory *mem, size_t size);
void bpf_map_charge_finish(struct bpf_map_memory *mem);
void bpf_map_charge_move(struct bpf_map_memory *dst,
struct bpf_map_memory *src);