From a06d91262a0d5d716a84c6d45d9e0cb5b334879f Mon Sep 17 00:00:00 2001
From: Greg Kroah-Hartman <gregkh@google.com>
Date: Sat, 2 May 2020 09:41:56 +0200
Subject: [PATCH] ANDROID: GKI: mmu_notifier.h: add Android ABI padding to some
 structures

Try to mitigate potential future driver core api changes by adding a
padding to struct mmu_notifier_ops and struct mmu_notifier.

Based on a change made to the RHEL/CENTOS 8 kernel.

Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If631445abf20c22830a1c764ff2ccd662a7bd204
---
 include/linux/mmu_notifier.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h
index b8200782dede..a474b773718b 100644
--- a/include/linux/mmu_notifier.h
+++ b/include/linux/mmu_notifier.h
@@ -8,6 +8,7 @@
 #include <linux/mmap_lock.h>
 #include <linux/srcu.h>
 #include <linux/interval_tree.h>
+#include <linux/android_kabi.h>
 
 struct mmu_notifier_subscriptions;
 struct mmu_notifier;
@@ -215,6 +216,11 @@ struct mmu_notifier_ops {
 	 */
 	struct mmu_notifier *(*alloc_notifier)(struct mm_struct *mm);
 	void (*free_notifier)(struct mmu_notifier *subscription);
+
+	ANDROID_KABI_RESERVE(1);
+	ANDROID_KABI_RESERVE(2);
+	ANDROID_KABI_RESERVE(3);
+	ANDROID_KABI_RESERVE(4);
 };
 
 /*
@@ -234,6 +240,9 @@ struct mmu_notifier {
 	struct mm_struct *mm;
 	struct rcu_head rcu;
 	unsigned int users;
+
+	ANDROID_KABI_RESERVE(1);
+	ANDROID_KABI_RESERVE(2);
 };
 
 /**