kabi: mm: reserve space for memory subsystem related

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4JWSP
CVE: NA

--------------------------------------

Reserve space for the structure in memory subsystem.
Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

include/linux/mm.h

@@ -31,6 +31,7 @@
 #include <linux/sizes.h>
 #include <linux/sched.h>
 #include <linux/pgtable.h>
+#include <linux/kabi.h>
 
 struct mempolicy;
 struct anon_vma;
@@ -648,6 +649,10 @@ struct vm_operations_struct {
 	 */
 	struct page *(*find_special_page)(struct vm_area_struct *vma,
 					  unsigned long addr);
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 static inline void vma_init(struct vm_area_struct *vma, struct mm_struct *mm)

include/linux/mm_types.h

@@ -4,6 +4,7 @@
 
 #include <linux/mm_types_task.h>
 
+#include <linux/kabi.h>
 #include <linux/auxvec.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
@@ -374,6 +375,11 @@ struct vm_area_struct {
 	struct mempolicy *vm_policy;	/* NUMA policy for the VMA */
 #endif
 	struct vm_userfaultfd_ctx vm_userfaultfd_ctx;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 } __randomize_layout;
 
 struct core_thread {
@@ -581,6 +587,15 @@ struct mm_struct {
 #endif
 	} __randomize_layout;
 
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
+	KABI_RESERVE(5)
+	KABI_RESERVE(6)
+	KABI_RESERVE(7)
+	KABI_RESERVE(8)
+
 #if IS_ENABLED(CONFIG_KVM) && !defined(__GENKSYMS__)
 	struct kvm *kvm;
 #endif

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/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);
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 };
 
 /*
@@ -234,6 +240,9 @@ struct mmu_notifier {
 	struct mm_struct *mm;
 	struct rcu_head rcu;
 	unsigned int users;
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 };
 
 /**

include/linux/mmzone.h

@@ -21,6 +21,7 @@
 #include <linux/mm_types.h>
 #include <linux/page-flags.h>
 #include <asm/page.h>
+#include <linux/kabi.h>
 
 /* Free memory management - zoned buddy allocator.  */
 #ifndef CONFIG_FORCE_MAX_ZONEORDER
@@ -583,6 +584,11 @@ struct zone {
 	bool			contiguous;
 
 	ZONE_PADDING(_pad3_)
+
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
+	KABI_RESERVE(4)
 	/* Zone statistics */
 	atomic_long_t		vm_stat[NR_VM_ZONE_STAT_ITEMS];
 	atomic_long_t		vm_numa_stat[NR_VM_NUMA_STAT_ITEMS];
@@ -824,6 +830,9 @@ typedef struct pglist_data {
 
 	ZONE_PADDING(_pad2_)
 
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
+	KABI_RESERVE(3)
 	/* Per-node vmstats */
 	struct per_cpu_nodestat __percpu *per_cpu_nodestats;
 	atomic_long_t		vm_stat[NR_VM_NODE_STAT_ITEMS];

include/linux/swap.h

@@ -12,6 +12,7 @@
 #include <linux/fs.h>
 #include <linux/atomic.h>
 #include <linux/page-flags.h>
+#include <linux/kabi.h>
 #include <asm/page.h>
 
 struct notifier_block;
@@ -291,6 +292,8 @@ struct swap_info_struct {
 					 */
 	struct work_struct discard_work; /* discard worker */
 	struct swap_cluster_list discard_clusters; /* discard clusters list */
+	KABI_RESERVE(1)
+	KABI_RESERVE(2)
 	struct plist_node avail_lists[]; /*
 					   * entries in swap_avail_heads, one
 					   * entry per node.