diff options
Diffstat (limited to 'kernel/bpf/syscall.c')
| -rw-r--r-- | kernel/bpf/syscall.c | 24 |
1 files changed, 4 insertions, 20 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 4e32cc94edd9..3b39550d8485 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -181,18 +181,11 @@ struct bpf_map *__bpf_map_get(struct fd f) return f.file->private_data; } -/* prog's and map's refcnt limit */ -#define BPF_MAX_REFCNT 32768 - -struct bpf_map *bpf_map_inc(struct bpf_map *map, bool uref) +void bpf_map_inc(struct bpf_map *map, bool uref) { - if (atomic_inc_return(&map->refcnt) > BPF_MAX_REFCNT) { - atomic_dec(&map->refcnt); - return ERR_PTR(-EBUSY); - } + atomic_inc(&map->refcnt); if (uref) atomic_inc(&map->usercnt); - return map; } struct bpf_map *bpf_map_get_with_uref(u32 ufd) @@ -204,7 +197,7 @@ struct bpf_map *bpf_map_get_with_uref(u32 ufd) if (IS_ERR(map)) return map; - map = bpf_map_inc(map, true); + bpf_map_inc(map, true); fdput(f); return map; @@ -587,15 +580,6 @@ static struct bpf_prog *__bpf_prog_get(struct fd f) return f.file->private_data; } -struct bpf_prog *bpf_prog_inc(struct bpf_prog *prog) -{ - if (atomic_inc_return(&prog->aux->refcnt) > BPF_MAX_REFCNT) { - atomic_dec(&prog->aux->refcnt); - return ERR_PTR(-EBUSY); - } - return prog; -} - /* called by sockets/tracing/seccomp before attaching program to an event * pairs with bpf_prog_put() */ @@ -608,7 +592,7 @@ struct bpf_prog *bpf_prog_get(u32 ufd) if (IS_ERR(prog)) return prog; - prog = bpf_prog_inc(prog); + atomic_inc(&prog->aux->refcnt); fdput(f); return prog; |