Merge "mm: showmem: make the notifiers atomic" into msm-4.8

/*

 * Copyright (c) 2014, The Linux Foundation. All rights reserved.

 * Copyright (c) 2014, 2016, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

#include <linux/fs.h>

#include <linux/init.h>

BLOCKING_NOTIFIER_HEAD(show_mem_notifier);

ATOMIC_NOTIFIER_HEAD(show_mem_notifier);

int show_mem_notifier_register(struct notifier_block *nb)

{

	return blocking_notifier_chain_register(&show_mem_notifier, nb);

	return atomic_notifier_chain_register(&show_mem_notifier, nb);

}

int show_mem_notifier_unregister(struct notifier_block *nb)

{

	return blocking_notifier_chain_unregister(&show_mem_notifier, nb);

	return  atomic_notifier_chain_unregister(&show_mem_notifier, nb);

}

void show_mem_call_notifiers(void)

{

	blocking_notifier_call_chain(&show_mem_notifier, 0, NULL);

	atomic_notifier_call_chain(&show_mem_notifier, 0, NULL);

}

static int show_mem_notifier_get(void *dat, u64 *val)