Switch from head pages to folios. This removes an assumption that
THPs are the only way to have a high-order page.
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
mm/gup.c | 28 ++++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/mm/gup.c b/mm/gup.c
index 76717e05413d..eb7c66e2b785 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1822,41 +1822,41 @@ static long check_and_migrate_movable_pages(unsigned long nr_pages,
bool drain_allow = true;
LIST_HEAD(movable_page_list);
long ret = 0;
- struct page *prev_head = NULL;
- struct page *head;
+ struct folio *folio, *prev_folio = NULL;
struct migration_target_control mtc = {
.nid = NUMA_NO_NODE,
.gfp_mask = GFP_USER | __GFP_NOWARN,
};
for (i = 0; i < nr_pages; i++) {
- head = compound_head(pages[i]);
- if (head == prev_head)
+ folio = page_folio(pages[i]);
+ if (folio == prev_folio)
continue;
- prev_head = head;
+ prev_folio = folio;
/*
* If we get a movable page, since we are going to be pinning
* these entries, try to move them out if possible.
*/
- if (!is_pinnable_page(head)) {
- if (PageHuge(head)) {
- if (!isolate_huge_page(head, &movable_page_list))
+ if (!is_pinnable_page(&folio->page)) {
+ if (folio_test_hugetlb(folio)) {
+ if (!isolate_huge_page(&folio->page,
+ &movable_page_list))
isolation_error_count++;
} else {
- if (!PageLRU(head) && drain_allow) {
+ if (!folio_test_lru(folio) && drain_allow) {
lru_add_drain_all();
drain_allow = false;
}
- if (isolate_lru_page(head)) {
+ if (isolate_lru_folio(folio)) {
isolation_error_count++;
continue;
}
- list_add_tail(&head->lru, &movable_page_list);
- mod_node_page_state(page_pgdat(head),
+ list_add_tail(&folio->lru, &movable_page_list);
+ node_stat_mod_folio(folio,
NR_ISOLATED_ANON +
- page_is_file_lru(head),
- thp_nr_pages(head));
+ folio_is_file_lru(folio),
+ folio_nr_pages(folio));
}
}
}
--
2.33.0
