Unverified Commit c55d9918 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!9419 mm/migrate: set swap entry values of THP tail pages properly. 

Merge Pull Request from: @ci-robot 
 
PR sync from: Liu Shixin <liushixin2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/YBDU5CZH3WCVRTL57BKFRXAQIE5JAKBP/ 
 
https://gitee.com/openeuler/kernel/issues/IA82S5 
 
Link:https://gitee.com/openeuler/kernel/pulls/9419

 

Reviewed-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: default avatarLiu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents f0f9fd5a df5dfbaf

mm/migrate.c

+5 −1
Original line number Diff line number Diff line
@@ -515,8 +515,12 @@ int migrate_page_move_mapping(struct address_space *mapping, 
	if (PageSwapBacked(page)) {

		__SetPageSwapBacked(newpage);

		if (PageSwapCache(page)) {

			int i;



			SetPageSwapCache(newpage);

			set_page_private(newpage, page_private(page));

			for (i = 0; i < (1 << compound_order(page)); i++)

				set_page_private(newpage + i,

						 page_private(page + i));

		}

	} else {

		VM_BUG_ON_PAGE(PageSwapCache(page), page);