remove libdss from Makefile

[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / mm / internal.h

diff --git a/mm/internal.h b/mm/internal.h
index 1df011f624801ffbdf3379a6d17218d9b32280e1..b0302094d4bb4e23e96fbe2fcdb53522cdcaf1d2 100644 (file)
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -537,4 +537,23 @@ static inline bool is_migrate_highatomic_page(struct page *page)
 }
 
 void setup_zone_pageset(struct zone *zone);
+
+/*
+ * A cached value of the page's pageblock's migratetype, used when the page is
+ * put on a pcplist. Used to avoid the pageblock migratetype lookup when
+ * freeing from pcplists in most cases, at the cost of possibly becoming stale.
+ * Also the migratetype set in the page does not necessarily match the pcplist
+ * index, e.g. page might have MIGRATE_CMA set but be on a pcplist with any
+ * other index - this ensures that it will be put on the correct CMA freelist.
+ */
+static inline int get_pcppage_migratetype(struct page *page)
+{
+       return page->index;
+}
+
+static inline void set_pcppage_migratetype(struct page *page, int migratetype)
+{
+       page->index = migratetype;
+}
+
 #endif /* __MM_INTERNAL_H */