diff -puN include/linux/migrate.h~migrate_pages-add-success-return include/linux/migrate.h
--- a/include/linux/migrate.h~migrate_pages-add-success-return	2020-10-07 09:15:29.333642446 -0700
+++ b/include/linux/migrate.h	2020-10-07 09:15:29.375642446 -0700
@@ -40,7 +40,8 @@ extern int migrate_page(struct address_s
 			struct page *newpage, struct page *page,
 			enum migrate_mode mode);
 extern int migrate_pages(struct list_head *l, new_page_t new, free_page_t free,
-		unsigned long private, enum migrate_mode mode, int reason);
+		unsigned long private, enum migrate_mode mode, int reason,
+		unsigned int *nr_succeeded);
 extern struct page *alloc_migration_target(struct page *page, unsigned long private);
 extern int isolate_movable_page(struct page *page, isolate_mode_t mode);
 extern void putback_movable_page(struct page *page);
@@ -58,7 +59,7 @@ extern int migrate_page_move_mapping(str
 static inline void putback_movable_pages(struct list_head *l) {}
 static inline int migrate_pages(struct list_head *l, new_page_t new,
 		free_page_t free, unsigned long private, enum migrate_mode mode,
-		int reason)
+		int reason, unsigned int *nr_succeeded)
 	{ return -ENOSYS; }
 static inline struct page *alloc_migration_target(struct page *page,
 		unsigned long private)
diff -puN mm/compaction.c~migrate_pages-add-success-return mm/compaction.c
--- a/mm/compaction.c~migrate_pages-add-success-return	2020-10-07 09:15:29.337642446 -0700
+++ b/mm/compaction.c	2020-10-07 09:15:29.380642446 -0700
@@ -2196,6 +2196,7 @@ compact_zone(struct compact_control *cc,
 	unsigned long last_migrated_pfn;
 	const bool sync = cc->mode != MIGRATE_ASYNC;
 	bool update_cached;
+	unsigned int nr_succeeded = 0;
 
 	/*
 	 * These counters track activities during zone compaction.  Initialize
@@ -2314,7 +2315,7 @@ compact_zone(struct compact_control *cc,
 
 		err = migrate_pages(&cc->migratepages, compaction_alloc,
 				compaction_free, (unsigned long)cc, cc->mode,
-				MR_COMPACTION);
+				MR_COMPACTION, &nr_succeeded);
 
 		trace_mm_compaction_migratepages(cc->nr_migratepages, err,
 							&cc->migratepages);
diff -puN mm/gup.c~migrate_pages-add-success-return mm/gup.c
--- a/mm/gup.c~migrate_pages-add-success-return	2020-10-07 09:15:29.345642446 -0700
+++ b/mm/gup.c	2020-10-07 09:15:29.384642446 -0700
@@ -1586,6 +1586,7 @@ static long check_and_migrate_cma_pages(
 	unsigned long step;
 	bool drain_allow = true;
 	bool migrate_allow = true;
+	unsigned int nr_succeeded = 0;
 	LIST_HEAD(cma_page_list);
 	long ret = nr_pages;
 	struct migration_target_control mtc = {
@@ -1638,7 +1639,8 @@ check_again:
 			put_page(pages[i]);
 
 		if (migrate_pages(&cma_page_list, alloc_migration_target, NULL,
-			(unsigned long)&mtc, MIGRATE_SYNC, MR_CONTIG_RANGE)) {
+			(unsigned long)&mtc, MIGRATE_SYNC, MR_CONTIG_RANGE,
+				  &nr_succeeded)) {
 			/*
 			 * some of the pages failed migration. Do get_user_pages
 			 * without migration.
diff -puN mm/memory-failure.c~migrate_pages-add-success-return mm/memory-failure.c
--- a/mm/memory-failure.c~migrate_pages-add-success-return	2020-10-07 09:15:29.347642446 -0700
+++ b/mm/memory-failure.c	2020-10-07 09:15:29.388642446 -0700
@@ -1724,6 +1724,7 @@ static int soft_offline_huge_page(struct
 	int ret;
 	unsigned long pfn = page_to_pfn(page);
 	struct page *hpage = compound_head(page);
+	unsigned int nr_succeeded = 0;
 	LIST_HEAD(pagelist);
 
 	/*
@@ -1751,7 +1752,7 @@ static int soft_offline_huge_page(struct
 	}
 
 	ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL,
-				MIGRATE_SYNC, MR_MEMORY_FAILURE);
+				MIGRATE_SYNC, MR_MEMORY_FAILURE, &nr_succeeded);
 	if (ret) {
 		pr_info("soft offline: %#lx: hugepage migration failed %d, type %lx (%pGp)\n",
 			pfn, ret, page->flags, &page->flags);
@@ -1782,6 +1783,7 @@ static int __soft_offline_page(struct pa
 {
 	int ret;
 	unsigned long pfn = page_to_pfn(page);
+	unsigned int nr_succeeded = 0;
 
 	/*
 	 * Check PageHWPoison again inside page lock because PageHWPoison
@@ -1841,7 +1843,8 @@ static int __soft_offline_page(struct pa
 						page_is_file_lru(page));
 		list_add(&page->lru, &pagelist);
 		ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL,
-					MIGRATE_SYNC, MR_MEMORY_FAILURE);
+					MIGRATE_SYNC, MR_MEMORY_FAILURE,
+					&nr_succeeded);
 		if (ret) {
 			if (!list_empty(&pagelist))
 				putback_movable_pages(&pagelist);
diff -puN mm/memory_hotplug.c~migrate_pages-add-success-return mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~migrate_pages-add-success-return	2020-10-07 09:15:29.353642446 -0700
+++ b/mm/memory_hotplug.c	2020-10-07 09:15:29.391642446 -0700
@@ -1301,6 +1301,7 @@ do_migrate_range(unsigned long start_pfn
 	unsigned long pfn;
 	struct page *page, *head;
 	int ret = 0;
+	unsigned int nr_succeeded = 0;
 	LIST_HEAD(source);
 
 	for (pfn = start_pfn; pfn < end_pfn; pfn++) {
@@ -1356,7 +1357,8 @@ do_migrate_range(unsigned long start_pfn
 	if (!list_empty(&source)) {
 		/* Allocate a new page from the nearest neighbor node */
 		ret = migrate_pages(&source, new_node_page, NULL, 0,
-					MIGRATE_SYNC, MR_MEMORY_HOTPLUG);
+					MIGRATE_SYNC, MR_MEMORY_HOTPLUG,
+					&nr_succeeded);
 		if (ret) {
 			list_for_each_entry(page, &source, lru) {
 				pr_warn("migrating pfn %lx failed ret:%d ",
diff -puN mm/mempolicy.c~migrate_pages-add-success-return mm/mempolicy.c
--- a/mm/mempolicy.c~migrate_pages-add-success-return	2020-10-07 09:15:29.356642446 -0700
+++ b/mm/mempolicy.c	2020-10-07 09:15:29.396642446 -0700
@@ -1072,6 +1072,7 @@ static int migrate_page_add(struct page
 static int migrate_to_node(struct mm_struct *mm, int source, int dest,
 			   int flags)
 {
+	unsigned int nr_succeeded = 0;
 	nodemask_t nmask;
 	LIST_HEAD(pagelist);
 	int err = 0;
@@ -1094,7 +1095,7 @@ static int migrate_to_node(struct mm_str
 
 	if (!list_empty(&pagelist)) {
 		err = migrate_pages(&pagelist, alloc_migration_target, NULL,
-				(unsigned long)&mtc, MIGRATE_SYNC, MR_SYSCALL);
+				(unsigned long)&mtc, MIGRATE_SYNC, MR_SYSCALL, &nr_succeeded);
 		if (err)
 			putback_movable_pages(&pagelist);
 	}
@@ -1271,6 +1272,7 @@ static long do_mbind(unsigned long start
 		     nodemask_t *nmask, unsigned long flags)
 {
 	struct mm_struct *mm = current->mm;
+	unsigned int nr_succeeded = 0;
 	struct mempolicy *new;
 	unsigned long end;
 	int err;
@@ -1352,7 +1354,8 @@ static long do_mbind(unsigned long start
 		if (!list_empty(&pagelist)) {
 			WARN_ON_ONCE(flags & MPOL_MF_LAZY);
 			nr_failed = migrate_pages(&pagelist, new_page, NULL,
-				start, MIGRATE_SYNC, MR_MEMPOLICY_MBIND);
+				start, MIGRATE_SYNC, MR_MEMPOLICY_MBIND,
+				&nr_succeeded);
 			if (nr_failed)
 				putback_movable_pages(&pagelist);
 		}
diff -puN mm/migrate.c~migrate_pages-add-success-return mm/migrate.c
--- a/mm/migrate.c~migrate_pages-add-success-return	2020-10-07 09:15:29.362642446 -0700
+++ b/mm/migrate.c	2020-10-07 09:15:29.401642446 -0700
@@ -1433,6 +1433,7 @@ out:
  * @mode:		The migration mode that specifies the constraints for
  *			page migration, if any.
  * @reason:		The reason for page migration.
+ * @nr_succeeded:	The number of pages migrated successfully.
  *
  * The function returns after 10 attempts or if no pages are movable any more
  * because the list has become empty or no retryable pages exist any more.
@@ -1443,12 +1444,11 @@ out:
  */
 int migrate_pages(struct list_head *from, new_page_t get_new_page,
 		free_page_t put_new_page, unsigned long private,
-		enum migrate_mode mode, int reason)
+		enum migrate_mode mode, int reason, unsigned int *nr_succeeded)
 {
 	int retry = 1;
 	int thp_retry = 1;
 	int nr_failed = 0;
-	int nr_succeeded = 0;
 	int nr_thp_succeeded = 0;
 	int nr_thp_failed = 0;
 	int nr_thp_split = 0;
@@ -1529,7 +1529,7 @@ retry:
 					nr_succeeded += nr_subpages;
 					break;
 				}
-				nr_succeeded++;
+				(*nr_succeeded)++;
 				break;
 			default:
 				/*
@@ -1552,12 +1552,12 @@ retry:
 	nr_thp_failed += thp_retry;
 	rc = nr_failed;
 out:
-	count_vm_events(PGMIGRATE_SUCCESS, nr_succeeded);
+	count_vm_events(PGMIGRATE_SUCCESS, *nr_succeeded);
 	count_vm_events(PGMIGRATE_FAIL, nr_failed);
 	count_vm_events(THP_MIGRATION_SUCCESS, nr_thp_succeeded);
 	count_vm_events(THP_MIGRATION_FAIL, nr_thp_failed);
 	count_vm_events(THP_MIGRATION_SPLIT, nr_thp_split);
-	trace_mm_migrate_pages(nr_succeeded, nr_failed, nr_thp_succeeded,
+	trace_mm_migrate_pages(*nr_succeeded, nr_failed, nr_thp_succeeded,
 			       nr_thp_failed, nr_thp_split, mode, reason);
 
 	if (!swapwrite)
@@ -1625,6 +1625,7 @@ static int store_status(int __user *stat
 static int do_move_pages_to_node(struct mm_struct *mm,
 		struct list_head *pagelist, int node)
 {
+	unsigned int nr_succeeded = 0;
 	int err;
 	struct migration_target_control mtc = {
 		.nid = node,
@@ -1632,7 +1633,7 @@ static int do_move_pages_to_node(struct
 	};
 
 	err = migrate_pages(pagelist, alloc_migration_target, NULL,
-			(unsigned long)&mtc, MIGRATE_SYNC, MR_SYSCALL);
+			(unsigned long)&mtc, MIGRATE_SYNC, MR_SYSCALL, &nr_succeeded);
 	if (err)
 		putback_movable_pages(pagelist);
 	return err;
@@ -2090,6 +2091,7 @@ int migrate_misplaced_page(struct page *
 	pg_data_t *pgdat = NODE_DATA(node);
 	int isolated;
 	int nr_remaining;
+	unsigned int nr_succeeded = 0;
 	LIST_HEAD(migratepages);
 
 	/*
@@ -2114,7 +2116,7 @@ int migrate_misplaced_page(struct page *
 	list_add(&page->lru, &migratepages);
 	nr_remaining = migrate_pages(&migratepages, alloc_misplaced_dst_page,
 				     NULL, node, MIGRATE_ASYNC,
-				     MR_NUMA_MISPLACED);
+				     MR_NUMA_MISPLACED, &nr_succeeded);
 	if (nr_remaining) {
 		if (!list_empty(&migratepages)) {
 			list_del(&page->lru);
diff -puN mm/page_alloc.c~migrate_pages-add-success-return mm/page_alloc.c
--- a/mm/page_alloc.c~migrate_pages-add-success-return	2020-10-07 09:15:29.371642446 -0700
+++ b/mm/page_alloc.c	2020-10-07 09:15:29.409642446 -0700
@@ -8346,7 +8346,8 @@ static unsigned long pfn_max_align_up(un
 
 /* [start, end) must belong to a single zone. */
 static int __alloc_contig_migrate_range(struct compact_control *cc,
-					unsigned long start, unsigned long end)
+					unsigned long start, unsigned long end,
+					unsigned int *nr_succeeded)
 {
 	/* This function is based on compact_zone() from compaction.c. */
 	unsigned int nr_reclaimed;
@@ -8384,7 +8385,8 @@ static int __alloc_contig_migrate_range(
 		cc->nr_migratepages -= nr_reclaimed;
 
 		ret = migrate_pages(&cc->migratepages, alloc_migration_target,
-				NULL, (unsigned long)&mtc, cc->mode, MR_CONTIG_RANGE);
+				NULL, (unsigned long)&mtc, cc->mode, MR_CONTIG_RANGE,
+				nr_succeeded);
 	}
 	if (ret < 0) {
 		putback_movable_pages(&cc->migratepages);
@@ -8420,6 +8422,7 @@ int alloc_contig_range(unsigned long sta
 	unsigned long outer_start, outer_end;
 	unsigned int order;
 	int ret = 0;
+	unsigned int nr_succeeded = 0;
 
 	struct compact_control cc = {
 		.nr_migratepages = 0,
@@ -8472,7 +8475,7 @@ int alloc_contig_range(unsigned long sta
 	 * allocated.  So, if we fall through be sure to clear ret so that
 	 * -EBUSY is not accidentally used or returned to caller.
 	 */
-	ret = __alloc_contig_migrate_range(&cc, start, end);
+	ret = __alloc_contig_migrate_range(&cc, start, end, &nr_succeeded);
 	if (ret && ret != -EBUSY)
 		goto done;
 	ret =0;
