mm: numa: avoid unnecessary disruption of NUMA hinting during migration

[platform/adaptation/renesas_rcar/renesas_kernel.git] / include / linux / migrate.h

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 8d3c57f..b7717d7 100644 (file)
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -90,11 +90,21 @@ static inline int migrate_huge_page_move_mapping(struct address_space *mapping,
 #endif /* CONFIG_MIGRATION */
 
 #ifdef CONFIG_NUMA_BALANCING
-extern int migrate_misplaced_page(struct page *page, int node);
-extern int migrate_misplaced_page(struct page *page, int node);
+extern bool pmd_trans_migrating(pmd_t pmd);
+extern void wait_migrate_huge_page(struct anon_vma *anon_vma, pmd_t *pmd);
+extern int migrate_misplaced_page(struct page *page,
+                                 struct vm_area_struct *vma, int node);
 extern bool migrate_ratelimited(int node);
 #else
-static inline int migrate_misplaced_page(struct page *page, int node)
+static inline bool pmd_trans_migrating(pmd_t pmd)
+{
+       return false;
+}
+static inline void wait_migrate_huge_page(struct anon_vma *anon_vma, pmd_t *pmd)
+{
+}
+static inline int migrate_misplaced_page(struct page *page,
+                                        struct vm_area_struct *vma, int node)
 {
        return -EAGAIN; /* can't migrate now */
 }