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ANDROID: GKI: mmu_notifier.h: add Android ABI padding to some structures

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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
This commit is contained in:
Greg Kroah-Hartman 2020-05-02 09:41:56 +02:00
parent 8faaa07702
commit a06d91262a
1 changed files with 9 additions and 0 deletions
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9
include/linux/mmu_notifier.h
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@ -8,6 +8,7 @@
#include <linux/mmap_lock.h> #include <linux/mmap_lock.h>
#include <linux/srcu.h> #include <linux/srcu.h>
#include <linux/interval_tree.h> #include <linux/interval_tree.h>
#include <linux/android_kabi.h>
struct mmu_notifier_subscriptions; struct mmu_notifier_subscriptions;
struct mmu_notifier; struct mmu_notifier;
@ -215,6 +216,11 @@ struct mmu_notifier_ops {
*/ */
struct mmu_notifier *(*alloc_notifier)(struct mm_struct *mm); struct mmu_notifier *(*alloc_notifier)(struct mm_struct *mm);
void (*free_notifier)(struct mmu_notifier *subscription); 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 mm_struct *mm;
struct rcu_head rcu; struct rcu_head rcu;
unsigned int users; unsigned int users;
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
}; };
/** /**