[PATCH] uml: clean up after MADVISE_REMOVE

int can_drop_memory(void)

{

	void *addr;

	int fd;

	int fd, ok = 0;

	printk("Checking host MADV_REMOVE support...");

	fd = create_mem_file(UM_KERN_PAGE_SIZE);

	if(fd < 0){

		printk("Creating test memory file failed, err = %d\n", -fd);

		return 0;

		goto out;

	}

	addr = mmap64(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,

		      MAP_SHARED, fd, 0);

	if(addr == MAP_FAILED){

		printk("Mapping test memory file failed, err = %d\n", -errno);

		return 0;

		goto out_close;

	}

	if(madvise(addr, UM_KERN_PAGE_SIZE, MADV_REMOVE) != 0){

		printk("MADV_REMOVE failed, err = %d\n", -errno);

		return 0;

		goto out_unmap;

	}

	printk("OK\n");

	return 1;

	ok = 1;

out_unmap:

	munmap(addr, UM_KERN_PAGE_SIZE);

out_close:

	close(fd);

out:

	return ok;

}

void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int))