diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/bpf/syscall.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 5d141f16f6fa..cf8052b016e7 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -683,8 +683,8 @@ struct bpf_map *bpf_map_get_with_uref(u32 ufd) } /* map_idr_lock should have been held */ -static struct bpf_map *bpf_map_inc_not_zero(struct bpf_map *map, - bool uref) +static struct bpf_map *__bpf_map_inc_not_zero(struct bpf_map *map, + bool uref) { int refold; @@ -704,6 +704,16 @@ static struct bpf_map *bpf_map_inc_not_zero(struct bpf_map *map, return map; } +struct bpf_map *bpf_map_inc_not_zero(struct bpf_map *map, bool uref) +{ + spin_lock_bh(&map_idr_lock); + map = __bpf_map_inc_not_zero(map, uref); + spin_unlock_bh(&map_idr_lock); + + return map; +} +EXPORT_SYMBOL_GPL(bpf_map_inc_not_zero); + int __weak bpf_stackmap_copy(struct bpf_map *map, void *key, void *value) { return -ENOTSUPP; @@ -2177,7 +2187,7 @@ static int bpf_map_get_fd_by_id(const union bpf_attr *attr) spin_lock_bh(&map_idr_lock); map = idr_find(&map_idr, id); if (map) - map = bpf_map_inc_not_zero(map, true); + map = __bpf_map_inc_not_zero(map, true); else map = ERR_PTR(-ENOENT); spin_unlock_bh(&map_idr_lock); |