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* + mm-migrate-account-thp-numa-migration-counters-correctly.patch added to -mm tree
@ 2021-05-18 21:08 akpm
  0 siblings, 0 replies; only message in thread
From: akpm @ 2021-05-18 21:08 UTC (permalink / raw)
  To: borntraeger, gerald.schaefer, gor, hca, hughd, kirill.shutemov,
	mgorman, mhocko, mm-commits, shy828301, ying.huang, ziy

The patch titled
     Subject: mm: migrate: account THP NUMA migration counters correctly
has been added to the -mm tree.  Its filename is

This patch should soon appear at
and later at

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From: Yang Shi <>
Subject: mm: migrate: account THP NUMA migration counters correctly

Now both base page and THP NUMA migration is done via
migrate_misplaced_page(), keep the counters correctly for THP.

Signed-off-by: Yang Shi <>
Acked-by: Mel Gorman <>
Cc: Christian Borntraeger <>
Cc: Gerald Schaefer <>
Cc: Heiko Carstens <>
Cc: Huang Ying <>
Cc: Hugh Dickins <>
Cc: Kirill A. Shutemov <>
Cc: Michal Hocko <>
Cc: Vasily Gorbik <>
Cc: Zi Yan <>
Signed-off-by: Andrew Morton <>

 mm/migrate.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/mm/migrate.c~mm-migrate-account-thp-numa-migration-counters-correctly
+++ a/mm/migrate.c
@@ -2116,6 +2116,7 @@ int migrate_misplaced_page(struct page *
 	new_page_t *new;
 	bool compound;
+	unsigned int nr_pages = thp_nr_pages(page);
 	 * PTE mapped THP or HugeTLB page can't reach here so the page could
@@ -2154,13 +2155,13 @@ int migrate_misplaced_page(struct page *
 	if (nr_remaining) {
 		if (!list_empty(&migratepages)) {
-			dec_node_page_state(page, NR_ISOLATED_ANON +
-					page_is_file_lru(page));
+			mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON +
+					page_is_file_lru(page), -nr_pages);
 		isolated = 0;
 	} else
-		count_vm_numa_event(NUMA_PAGE_MIGRATE);
+		count_vm_numa_events(NUMA_PAGE_MIGRATE, nr_pages);
 	return isolated;

Patches currently in -mm which might be from are


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2021-05-18 21:08 + mm-migrate-account-thp-numa-migration-counters-correctly.patch added to -mm tree akpm

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