From c5fc5c3ae0c849c713c4291addb5fce699ad0972 Mon Sep 17 00:00:00 2001 From: Yang Shi Date: Wed, 30 Jun 2021 18:51:45 -0700 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. Link: https://lkml.kernel.org/r/20210518200801.7413-5-shy828301@gmail.com 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 Signed-off-by: Linus Torvalds --- mm/migrate.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'mm/migrate.c') diff --git a/mm/migrate.c b/mm/migrate.c index b7e330900b86..e191314f0f19 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2117,6 +2117,7 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma, LIST_HEAD(migratepages); 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 @@ -2155,13 +2156,13 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma, if (nr_remaining) { if (!list_empty(&migratepages)) { list_del(&page->lru); - 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); putback_lru_page(page); } isolated = 0; } else - count_vm_numa_event(NUMA_PAGE_MIGRATE); + count_vm_numa_events(NUMA_PAGE_MIGRATE, nr_pages); BUG_ON(!list_empty(&migratepages)); return isolated; -- cgit