diff options
Diffstat (limited to 'net/core/netclassid_cgroup.c')
| -rw-r--r-- | net/core/netclassid_cgroup.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/net/core/netclassid_cgroup.c b/net/core/netclassid_cgroup.c index 81cb3c72efe8..d9ee8d08a3a6 100644 --- a/net/core/netclassid_cgroup.c +++ b/net/core/netclassid_cgroup.c @@ -56,7 +56,7 @@ static void cgrp_css_free(struct cgroup_subsys_state *css) kfree(css_cls_state(css)); } -static int update_classid(const void *v, struct file *file, unsigned n) +static int update_classid_sock(const void *v, struct file *file, unsigned n) { int err; struct socket *sock = sock_from_file(file, &err); @@ -67,19 +67,27 @@ static int update_classid(const void *v, struct file *file, unsigned n) return 0; } -static void cgrp_attach(struct cgroup_taskset *tset) +static void update_classid(struct cgroup_subsys_state *css, void *v) { + struct css_task_iter it; struct task_struct *p; - struct cgroup_subsys_state *css; - - cgroup_taskset_for_each(p, css, tset) { - struct cgroup_cls_state *cs = css_cls_state(css); - void *v = (void *)(unsigned long)cs->classid; + css_task_iter_start(css, &it); + while ((p = css_task_iter_next(&it))) { task_lock(p); - iterate_fd(p->files, 0, update_classid, v); + iterate_fd(p->files, 0, update_classid_sock, v); task_unlock(p); } + css_task_iter_end(&it); +} + +static void cgrp_attach(struct cgroup_taskset *tset) +{ + struct cgroup_subsys_state *css; + + cgroup_taskset_first(tset, &css); + update_classid(css, + (void *)(unsigned long)css_cls_state(css)->classid); } static u64 read_classid(struct cgroup_subsys_state *css, struct cftype *cft) @@ -90,8 +98,11 @@ static u64 read_classid(struct cgroup_subsys_state *css, struct cftype *cft) static int write_classid(struct cgroup_subsys_state *css, struct cftype *cft, u64 value) { - css_cls_state(css)->classid = (u32) value; + struct cgroup_cls_state *cs = css_cls_state(css); + + cs->classid = (u32)value; + update_classid(css, (void *)(unsigned long)cs->classid); return 0; } |