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| author | Takashi Iwai <tiwai@suse.de> | 2012-10-30 11:08:25 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2012-10-30 11:08:25 +0100 |
| commit | a5d00dc3a4b65ed38249f3225e453944c633747b (patch) | |
| tree | 6249ca5a5f13059f42890525a9ea7133778f3891 /kernel/pid_namespace.c | |
| parent | 1a8506d4402b6e96c2ed778dc7ccbb48d1e02fce (diff) | |
| parent | 0914f7961babbf28aaa2f19b453951fb4841c03f (diff) | |
Merge branch 'for-linus' into for-next
... for migrating the core changes for USB-audio disconnection fixes
Diffstat (limited to 'kernel/pid_namespace.c')
| -rw-r--r-- | kernel/pid_namespace.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index 478bad2745e..eb00be20581 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -133,19 +133,26 @@ struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *old return create_pid_namespace(old_ns); } -void free_pid_ns(struct kref *kref) +static void free_pid_ns(struct kref *kref) { - struct pid_namespace *ns, *parent; + struct pid_namespace *ns; ns = container_of(kref, struct pid_namespace, kref); - - parent = ns->parent; destroy_pid_namespace(ns); +} - if (parent != NULL) - put_pid_ns(parent); +void put_pid_ns(struct pid_namespace *ns) +{ + struct pid_namespace *parent; + + while (ns != &init_pid_ns) { + parent = ns->parent; + if (!kref_put(&ns->kref, free_pid_ns)) + break; + ns = parent; + } } -EXPORT_SYMBOL_GPL(free_pid_ns); +EXPORT_SYMBOL_GPL(put_pid_ns); void zap_pid_ns_processes(struct pid_namespace *pid_ns) { |