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-rw-r--r--mm/migrate.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 905c2264c788..b6700f2962f3 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1976,7 +1976,6 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
struct page *new_page = NULL;
int page_lru = page_is_file_cache(page);
unsigned long start = address & HPAGE_PMD_MASK;
- unsigned long end = start + HPAGE_PMD_SIZE;
new_page = alloc_pages_node(node,
(GFP_TRANSHUGE_LIGHT | __GFP_THISNODE),
@@ -1999,6 +1998,8 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
/* anon mapping, we can simply copy page->mapping to the new page: */
new_page->mapping = page->mapping;
new_page->index = page->index;
+ /* flush the cache before copying using the kernel virtual address */
+ flush_cache_range(vma, start, start + HPAGE_PMD_SIZE);
migrate_page_copy(new_page, page);
WARN_ON(PageLRU(new_page));
@@ -2036,7 +2037,6 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
* new page and page_add_new_anon_rmap guarantee the copy is
* visible before the pagetable update.
*/
- flush_cache_range(vma, start, end);
page_add_anon_rmap(new_page, vma, start, true);
/*
* At this point the pmd is numa/protnone (i.e. non present) and the TLB