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-rw-r--r--include/linux/nsproxy.h30
1 files changed, 11 insertions, 19 deletions
diff --git a/include/linux/nsproxy.h b/include/linux/nsproxy.h
index 678e1d38eff..0b9f0dc30d6 100644
--- a/include/linux/nsproxy.h
+++ b/include/linux/nsproxy.h
@@ -35,30 +35,22 @@ 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 finalize_put_nsproxy(struct nsproxy *ns)
+static inline void put_nsproxy(struct nsproxy *ns)
{
- if (ns)
+ if (atomic_dec_and_test(&ns->count)) {
free_nsproxy(ns);
+ }
}
-static inline void put_and_finalize_nsproxy(struct nsproxy *ns)
+static inline void exit_task_namespaces(struct task_struct *p)
{
- 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);
+ struct nsproxy *ns = p->nsproxy;
+ if (ns) {
+ task_lock(p);
+ p->nsproxy = NULL;
+ task_unlock(p);
+ put_nsproxy(ns);
+ }
}
#endif