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ANDROID: GKI: elevator: 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 elevator_mq_ops and struct elevator_type.

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

Bug: 151154716
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ia4c2667fd5ca9e6dd2e0d30b95a0f8d5eb7921dc
This commit is contained in:
Greg Kroah-Hartman 2020-04-22 15:50:51 +02:00 committed by Carlos Llamas
parent 5fe1040d35
commit 1c5cd2e4ad
1 changed files with 9 additions and 0 deletions
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9
block/elevator.h
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@ -4,6 +4,7 @@
#include <linux/percpu.h>
#include <linux/hashtable.h>
#include <linux/android_kabi.h>
struct io_cq;
struct elevator_type;
@ -46,6 +47,11 @@ struct elevator_mq_ops {
struct request *(*next_request)(struct request_queue *, struct request *);
void (*init_icq)(struct io_cq *);
void (*exit_icq)(struct io_cq *);
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
};
#define ELV_NAME_MAX (16)
@ -82,6 +88,9 @@ struct elevator_type
/* managed by elevator core */
char icq_cache_name[ELV_NAME_MAX + 6]; /* elvname + "_io_cq" */
struct list_head list;
ANDROID_KABI_RESERVE(1);
ANDROID_KABI_RESERVE(2);
};
#define ELV_HASH_BITS 6