diff options
| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2024-08-27 19:47:27 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-09-03 21:15:59 -0700 |
| commit | f1264e9531b0fbadf88e0b9c8143c546343b481c (patch) | |
| tree | 24dd107a1e7ad5f79848c2d21922d717fe3a8ea6 /mm/migrate.c | |
| parent | e8a796fa1c16d4792c674dfb0c9dc86f48a00027 (diff) | |
mm: migrate: add isolate_folio_to_list()
Add isolate_folio_to_list() helper to try to isolate HugeTLB, no-LRU
movable and LRU folios to a list, which will be reused by
do_migrate_range() from memory hotplug soon, also drop the
mf_isolate_folio() since we could directly use new helper in the
soft_offline_in_use_page().
Link: https://lkml.kernel.org/r/20240827114728.3212578-5-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Tested-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 2250baa85ac2..ba4893d42618 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -178,6 +178,32 @@ void putback_movable_pages(struct list_head *l) } } +/* Must be called with an elevated refcount on the non-hugetlb folio */ +bool isolate_folio_to_list(struct folio *folio, struct list_head *list) +{ + bool isolated, lru; + + if (folio_test_hugetlb(folio)) + return isolate_hugetlb(folio, list); + + lru = !__folio_test_movable(folio); + if (lru) + isolated = folio_isolate_lru(folio); + else + isolated = isolate_movable_page(&folio->page, + ISOLATE_UNEVICTABLE); + + if (!isolated) + return false; + + list_add(&folio->lru, list); + if (lru) + node_stat_add_folio(folio, NR_ISOLATED_ANON + + folio_is_file_lru(folio)); + + return true; +} + /* * Restore a potential migration pte to a working pte entry */ |