diff options
Diffstat (limited to 'kernel/cgroup/cgroup.c')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 27 |
1 files changed, 0 insertions, 27 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 06b5ea9d899d..557a9b9d2244 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -6508,33 +6508,6 @@ int cgroup_bpf_attach(struct cgroup *cgrp, return ret; } -int cgroup_bpf_replace(struct bpf_link *link, struct bpf_prog *old_prog, - struct bpf_prog *new_prog) -{ - struct bpf_cgroup_link *cg_link; - int ret; - - if (link->ops != &bpf_cgroup_link_lops) - return -EINVAL; - - cg_link = container_of(link, struct bpf_cgroup_link, link); - - mutex_lock(&cgroup_mutex); - /* link might have been auto-released by dying cgroup, so fail */ - if (!cg_link->cgroup) { - ret = -EINVAL; - goto out_unlock; - } - if (old_prog && link->prog != old_prog) { - ret = -EPERM; - goto out_unlock; - } - ret = __cgroup_bpf_replace(cg_link->cgroup, cg_link, new_prog); -out_unlock: - mutex_unlock(&cgroup_mutex); - return ret; -} - int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog, enum bpf_attach_type type) { |