diff options
| author |   Roman Gushchin <guro@fb.com> | 2019-05-29 18:03:59 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-05-31 16:52:56 -0700 |
| commit | c85d69135a9175c50a823d04d62d932312d037b3 (patch) | |
| tree | edd6ec707ebbf68a89fc1c3fc2b2d06364978ad3 /net/core/sock_map.c | |
| parent | bpf: rework memlock-based memory accounting for maps (diff) | |
| download | linux-dev-c85d69135a9175c50a823d04d62d932312d037b3.tar.xz linux-dev-c85d69135a9175c50a823d04d62d932312d037b3.zip | |
bpf: move memory size checks to bpf_map_charge_init()
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>
Diffstat (limited to 'net/core/sock_map.c')
| -rw-r--r-- | net/core/sock_map.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/net/core/sock_map.c b/net/core/sock_map.c index 1028c922a149..52d4faeee18b 100644 --- a/net/core/sock_map.c +++ b/net/core/sock_map.c @@ -44,13 +44,7 @@ static struct bpf_map *sock_map_alloc(union bpf_attr *attr) /* Make sure page count doesn't overflow. */ cost = (u64) stab->map.max_entries * sizeof(struct sock *); - if (cost >= U32_MAX - PAGE_SIZE) { - err = -EINVAL; - goto free_stab; - } - - err = bpf_map_charge_init(&stab->map.memory, - round_up(cost, PAGE_SIZE) >> PAGE_SHIFT); + err = bpf_map_charge_init(&stab->map.memory, cost); if (err) goto free_stab; |