diff options
Diffstat (limited to 'include/linux/nsproxy.h')
| -rw-r--r-- | include/linux/nsproxy.h | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h index 0b9f0dc30d61..678e1d38effb 100644 --- a/include/linux/nsproxy.h +++ b/include/linux/nsproxy.h @@ -35,22 +35,30 @@ struct nsproxy *dup_namespaces(struct nsproxy *orig); int copy_namespaces(int flags, struct task_struct *tsk); void get_task_namespaces(struct task_struct *tsk); void free_nsproxy(struct nsproxy *ns); +struct nsproxy *put_nsproxy(struct nsproxy *ns); -static inline void put_nsproxy(struct nsproxy *ns) +static inline void finalize_put_nsproxy(struct nsproxy *ns) { - if (atomic_dec_and_test(&ns->count)) { + if (ns) free_nsproxy(ns); - } } -static inline void exit_task_namespaces(struct task_struct *p) +static inline void put_and_finalize_nsproxy(struct nsproxy *ns) { - struct nsproxy *ns = p->nsproxy; - if (ns) { - task_lock(p); - p->nsproxy = NULL; - task_unlock(p); - put_nsproxy(ns); - } + finalize_put_nsproxy(put_nsproxy(ns)); +} + +static inline struct nsproxy *preexit_task_namespaces(struct task_struct *p) +{ + return put_nsproxy(p->nsproxy); +} + +static inline void exit_task_namespaces(struct task_struct *p, + struct nsproxy *ns) +{ + task_lock(p); + p->nsproxy = NULL; + task_unlock(p); + finalize_put_nsproxy(ns); } #endif |