mnt->mnt_namespace = current->namespace; 
 if ((flag & CL_PROPAGATION) || IS_MNT_SHARED(old)) list_add(&mnt->mnt_share, &old->mnt_share); if (flag & CL_MAKE_SHARED) set_mnt_shared(mnt); 
static struct vfsmount *clone_mnt(struct vfsmount *old, struct dentry *root,					int flag){	struct super_block *sb = old->mnt_sb;	struct vfsmount *mnt = alloc_vfsmnt(old->mnt_devname);	if (mnt) {		mnt->mnt_flags = old->mnt_flags;		atomic_inc(&sb->s_active);		mnt->mnt_sb = sb;		mnt->mnt_root = dget(root);		mnt->mnt_mountpoint = mnt->mnt_root;		mnt->mnt_parent = mnt;		mnt->mnt_namespace = current->namespace;		/* stick the duplicate mount on the same expiry list		 * as the original if that was on one */		if (flag & CL_EXPIRE) {			spin_lock(&vfsmount_lock);			if (!list_empty(&old->mnt_expire))				list_add(&mnt->mnt_expire, &old->mnt_expire);			spin_unlock(&vfsmount_lock);		}	}	return mnt;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/b90fa9ae8f51f098ee480bbaabd6867992e9fc58/namespace.c/buggy/fs/namespace.c