[PATCH v2 13/15] mm: Pass order to prepare_alloc_pages in GFP flags

[Matthew Wilcox <willy@infradead.org>]

From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

Also pass the order to should_fail_alloc_page() in the GFP flags,
which only used the order when calling prepare_alloc_pages().

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/page_alloc.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d4ac38780e44..d457dfa8a0ac 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3262,8 +3262,9 @@ static int __init setup_fail_page_alloc(char *str)
 }
 __setup("fail_page_alloc=", setup_fail_page_alloc);
 
-static bool __should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
+static bool __should_fail_alloc_page(gfp_t gfp_mask)
 {
+	unsigned int order = gfp_order(gfp_mask);
 	if (order < fail_page_alloc.min_order)
 		return false;
 	if (gfp_mask & __GFP_NOFAIL)
@@ -3302,16 +3303,16 @@ late_initcall(fail_page_alloc_debugfs);
 
 #else /* CONFIG_FAIL_PAGE_ALLOC */
 
-static inline bool __should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
+static inline bool __should_fail_alloc_page(gfp_t gfp_mask)
 {
 	return false;
 }
 
 #endif /* CONFIG_FAIL_PAGE_ALLOC */
 
-static noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
+static noinline bool should_fail_alloc_page(gfp_t gfp_mask)
 {
-	return __should_fail_alloc_page(gfp_mask, order);
+	return __should_fail_alloc_page(gfp_mask);
 }
 ALLOW_ERROR_INJECTION(should_fail_alloc_page, TRUE);
 
@@ -4569,7 +4570,7 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
 	return page;
 }
 
-static inline bool prepare_alloc_pages(gfp_t gfp_mask, unsigned int order,
+static inline bool prepare_alloc_pages(gfp_t gfp_mask,
 		int preferred_nid, nodemask_t *nodemask,
 		struct alloc_context *ac, gfp_t *alloc_mask,
 		unsigned int *alloc_flags)
@@ -4592,7 +4593,7 @@ static inline bool prepare_alloc_pages(gfp_t gfp_mask, unsigned int order,
 
 	might_sleep_if(gfp_mask & __GFP_DIRECT_RECLAIM);
 
-	if (should_fail_alloc_page(gfp_mask, order))
+	if (should_fail_alloc_page(gfp_mask))
 		return false;
 
 	if (IS_ENABLED(CONFIG_CMA) && ac->migratetype == MIGRATE_MOVABLE)
@@ -4639,7 +4640,7 @@ __alloc_pages_nodemask(gfp_t gfp_mask, int preferred_nid, nodemask_t *nodemask)
 
 	gfp_mask &= gfp_allowed_mask;
 	alloc_mask = gfp_mask;
-	if (!prepare_alloc_pages(gfp_mask, order, preferred_nid, nodemask, &ac, &alloc_mask, &alloc_flags))
+	if (!prepare_alloc_pages(gfp_mask, preferred_nid, nodemask, &ac, &alloc_mask, &alloc_flags))
 		return NULL;
 
 	finalise_ac(gfp_mask, &ac);
-- 
2.20.1