}
#ifdef CONFIG_COMPACTION
-
-int PageMovable(struct page *page)
+bool PageMovable(struct page *page)
{
- struct address_space *mapping;
+ const struct movable_operations *mops;
VM_BUG_ON_PAGE(!PageLocked(page), page);
if (!__PageMovable(page))
- return 0;
+ return false;
- mapping = page_mapping(page);
- if (mapping && mapping->a_ops && mapping->a_ops->isolate_page)
- return 1;
+ mops = page_movable_ops(page);
+ if (mops)
+ return true;
- return 0;
+ return false;
}
EXPORT_SYMBOL(PageMovable);
-void __SetPageMovable(struct page *page, struct address_space *mapping)
+void __SetPageMovable(struct page *page, const struct movable_operations *mops)
{
VM_BUG_ON_PAGE(!PageLocked(page), page);
- VM_BUG_ON_PAGE((unsigned long)mapping & PAGE_MAPPING_MOVABLE, page);
- page->mapping = (void *)((unsigned long)mapping | PAGE_MAPPING_MOVABLE);
+ VM_BUG_ON_PAGE((unsigned long)mops & PAGE_MAPPING_MOVABLE, page);
+ page->mapping = (void *)((unsigned long)mops | PAGE_MAPPING_MOVABLE);
}
EXPORT_SYMBOL(__SetPageMovable);
{
VM_BUG_ON_PAGE(!PageMovable(page), page);
/*
- * Clear registered address_space val with keeping PAGE_MAPPING_MOVABLE
- * flag so that VM can catch up released page by driver after isolation.
- * With it, VM migration doesn't try to put it back.
+ * This page still has the type of a movable page, but it's
+ * actually not movable any more.
*/
- page->mapping = (void *)((unsigned long)page->mapping &
- PAGE_MAPPING_MOVABLE);
+ page->mapping = (void *)PAGE_MAPPING_MOVABLE;
}
EXPORT_SYMBOL(__ClearPageMovable);
/*
* Only pages without mappings or that have a
- * ->migratepage callback are possible to migrate
+ * ->migrate_folio callback are possible to migrate
* without blocking. However, we can be racing with
* truncation so it's necessary to lock the page
* to stabilise the mapping as truncation holds
goto isolate_fail_put;
mapping = page_mapping(page);
- migrate_dirty = !mapping || mapping->a_ops->migratepage;
+ migrate_dirty = !mapping ||
+ mapping->a_ops->migrate_folio;
unlock_page(page);
if (!migrate_dirty)
goto isolate_fail_put;