[PATCH v2 08/15] mm: Pass order to __get_free_page in GFP flags

[Matthew Wilcox <willy@xxxxxxxxxxxxx>]

From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>

Switch __get_free_page() to be the implementation and __get_free_pages()
to be the wrapper that calls __get_free_page() with the appropriate
argument.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 include/linux/gfp.h | 6 +++---
 mm/page_alloc.c     | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index faf3586419ce..dac282ac1158 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -536,15 +536,15 @@ extern struct page *alloc_pages_vma(gfp_t gfp, struct vm_area_struct *vma,
 #define alloc_page_vma_node(gfp_mask, vma, addr, node)		\
 	alloc_pages_vma(gfp_mask, vma, addr, node, false)
 
-extern unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order);
+extern unsigned long __get_free_page(gfp_t gfp_mask);
 extern unsigned long get_zeroed_page(gfp_t gfp_mask);
 
 void *alloc_pages_exact(size_t size, gfp_t gfp_mask);
 void free_pages_exact(void *virt, size_t size);
 void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask);
 
-#define __get_free_page(gfp_mask) \
-		__get_free_pages((gfp_mask), 0)
+#define __get_free_pages(gfp_mask, order) \
+		__get_free_page(gfp_mask | __GFP_ORDER(order))
 
 #define __get_dma_pages(gfp_mask, order) \
 		__get_free_pages((gfp_mask) | GFP_DMA, (order))
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 6e968ab91660..eefe3c81c383 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4693,16 +4693,16 @@ EXPORT_SYMBOL(__alloc_pages_nodemask);
  * address cannot represent highmem pages. Use alloc_pages and then kmap if
  * you need to access high mem.
  */
-unsigned long __get_free_pages(gfp_t gfp_mask, unsigned int order)
+unsigned long __get_free_page(gfp_t gfp_mask)
 {
 	struct page *page;
 
-	page = alloc_pages(gfp_mask & ~__GFP_HIGHMEM, order);
+	page = alloc_page(gfp_mask & ~__GFP_HIGHMEM);
 	if (!page)
 		return 0;
 	return (unsigned long) page_address(page);
 }
-EXPORT_SYMBOL(__get_free_pages);
+EXPORT_SYMBOL(__get_free_page);
 
 unsigned long get_zeroed_page(gfp_t gfp_mask)
 {
-- 
2.20.1