mm: migrate: add hugepage migration code to move_pages()

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / migrate.c

diff --git a/mm/migrate.c b/mm/migrate.c
index 3ec47d3..d313737 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1092,7 +1092,11 @@ static struct page *new_page_node(struct page *p, unsigned long private,
 
        *result = &pm->status;
 
-       return alloc_pages_exact_node(pm->node,
+       if (PageHuge(p))
+               return alloc_huge_page_node(page_hstate(compound_head(p)),
+                                       pm->node);
+       else
+               return alloc_pages_exact_node(pm->node,
                                GFP_HIGHUSER_MOVABLE | GFP_THISNODE, 0);
 }
 
@@ -1152,6 +1156,11 @@ static int do_move_page_to_node_array(struct mm_struct *mm,
                                !migrate_all)
                        goto put_and_set;
 
+               if (PageHuge(page)) {
+                       isolate_huge_page(page, &pagelist);
+                       goto put_and_set;
+               }
+
                err = isolate_lru_page(page);
                if (!err) {
                        list_add_tail(&page->lru, &pagelist);
@@ -1174,7 +1183,7 @@ set_status:
                err = migrate_pages(&pagelist, new_page_node,
                                (unsigned long)pm, MIGRATE_SYNC, MR_SYSCALL);
                if (err)
-                       putback_lru_pages(&pagelist);
+                       putback_movable_pages(&pagelist);
        }
 
        up_read(&mm->mmap_sem);