atomic_t count;
struct vfsmount * root;
struct list_head list;
- struct rw_semaphore sem;
+ wait_queue_head_t poll;
+ int event;
};
-extern void umount_tree(struct vfsmount *);
extern int copy_namespace(int, struct task_struct *);
extern void __put_namespace(struct namespace *namespace);
+extern struct namespace *dup_namespace(struct task_struct *, struct fs_struct *);
static inline void put_namespace(struct namespace *namespace)
{
- if (atomic_dec_and_test(&namespace->count))
+ if (atomic_dec_and_lock(&namespace->count, &vfsmount_lock))
+ /* releases vfsmount_lock */
__put_namespace(namespace);
}