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-rw-r--r--include/linux/page-isolation.h19
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/page-isolation.h b/include/linux/page-isolation.h
index a92061e08d48..3fff8e774067 100644
--- a/include/linux/page-isolation.h
+++ b/include/linux/page-isolation.h
@@ -1,6 +1,25 @@
#ifndef __LINUX_PAGEISOLATION_H
#define __LINUX_PAGEISOLATION_H
+#ifdef CONFIG_MEMORY_ISOLATION
+static inline bool is_migrate_isolate_page(struct page *page)
+{
+ return get_pageblock_migratetype(page) == MIGRATE_ISOLATE;
+}
+static inline bool is_migrate_isolate(int migratetype)
+{
+ return migratetype == MIGRATE_ISOLATE;
+}
+#else
+static inline bool is_migrate_isolate_page(struct page *page)
+{
+ return false;
+}
+static inline bool is_migrate_isolate(int migratetype)
+{
+ return false;
+}
+#endif
bool has_unmovable_pages(struct zone *zone, struct page *page, int count,
bool skip_hwpoisoned_pages);