5 files changed, 32 insertions, 27 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 9671b6f23eda..00bad7793788 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -550,7 +550,7 @@ static inline compound_page_dtor *get_compound_page_dtor(struct page *page)
         return compound_page_dtors[page[1].compound_dtor];
 }
 
-static inline int compound_order(struct page *page)
+static inline unsigned int compound_order(struct page *page)
 {
         if (!PageHead(page))
                 return 0;
@@ -1810,7 +1810,8 @@ extern void si_meminfo(struct sysinfo * val);
 extern void si_meminfo_node(struct sysinfo *val, int nid);
 
 extern __printf(3, 4)
-void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...);
+void warn_alloc_failed(gfp_t gfp_mask, unsigned int order,
+                const char *fmt, ...);
 
 extern void setup_per_cpu_pageset(void);
 
diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h
index 2baeee12f48e..e942558b3585 100644
--- a/include/linux/pageblock-flags.h
+++ b/include/linux/pageblock-flags.h
@@ -44,7 +44,7 @@ enum pageblock_bits {
 #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
 
 /* Huge page sizes are variable */
-extern int pageblock_order;
+extern unsigned int pageblock_order;
 
 #else /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */
 
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 4eb0f0964883..7ce07d681265 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -994,7 +994,7 @@ static int hstate_next_node_to_free(struct hstate *h, nodemask_t *nodes_allowed)
 
 #if defined(CONFIG_CMA) && defined(CONFIG_X86_64)
 static void destroy_compound_gigantic_page(struct page *page,
-                                        unsigned long order)
+                                        unsigned int order)
 {
         int i;
         int nr_pages = 1 << order;
@@ -1009,7 +1009,7 @@ static void destroy_compound_gigantic_page(struct page *page,
         __ClearPageHead(page);
 }
 
-static void free_gigantic_page(struct page *page, unsigned order)
+static void free_gigantic_page(struct page *page, unsigned int order)
 {
         free_contig_range(page_to_pfn(page), 1 << order);
 }
@@ -1053,7 +1053,7 @@ static bool zone_spans_last_pfn(const struct zone *zone,
         return zone_spans_pfn(zone, last_pfn);
 }
 
-static struct page *alloc_gigantic_page(int nid, unsigned order)
+static struct page *alloc_gigantic_page(int nid, unsigned int order)
 {
         unsigned long nr_pages = 1 << order;
         unsigned long ret, pfn, flags;
@@ -1089,7 +1089,7 @@ static struct page *alloc_gigantic_page(int nid, unsigned order)
 }
 
 static void prep_new_huge_page(struct hstate *h, struct page *page, int nid);
-static void prep_compound_gigantic_page(struct page *page, unsigned long order);
+static void prep_compound_gigantic_page(struct page *page, unsigned int order);
 
 static struct page *alloc_fresh_gigantic_page_node(struct hstate *h, int nid)
 {
@@ -1122,9 +1122,9 @@ static int alloc_fresh_gigantic_page(struct hstate *h,
 static inline bool gigantic_page_supported(void) { return true; }
 #else
 static inline bool gigantic_page_supported(void) { return false; }
-static inline void free_gigantic_page(struct page *page, unsigned order) { }
+static inline void free_gigantic_page(struct page *page, unsigned int order) { }
 static inline void destroy_compound_gigantic_page(struct page *page,
-                                                unsigned long order) { }
+                                                unsigned int order) { }
 static inline int alloc_fresh_gigantic_page(struct hstate *h,
                                         nodemask_t *nodes_allowed) { return 0; }
 #endif
@@ -1250,7 +1250,7 @@ static void prep_new_huge_page(struct hstate *h, struct page *page, int nid)
         put_page(page); /* free it into the hugepage allocator */
 }
 
-static void prep_compound_gigantic_page(struct page *page, unsigned long order)
+static void prep_compound_gigantic_page(struct page *page, unsigned int order)
 {
         int i;
         int nr_pages = 1 << order;
@@ -1968,7 +1968,8 @@ found:
         return 1;
 }
 
-static void __init prep_compound_huge_page(struct page *page, int order)
+static void __init prep_compound_huge_page(struct page *page,
+                unsigned int order)
 {
         if (unlikely(order > (MAX_ORDER - 1)))
                 prep_compound_gigantic_page(page, order);
@@ -2679,7 +2680,7 @@ static int __init hugetlb_init(void)
 module_init(hugetlb_init);
 
 /* Should be called on processing a hugepagesz=... option */
-void __init hugetlb_add_hstate(unsigned order)
+void __init hugetlb_add_hstate(unsigned int order)
 {
         struct hstate *h;
         unsigned long i;
diff --git a/mm/internal.h b/mm/internal.h
index a7f5670fea23..38e24b89e4c4 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -177,7 +177,7 @@ __find_buddy_index(unsigned long page_idx, unsigned int order)
 extern int __isolate_free_page(struct page *page, unsigned int order);
 extern void __free_pages_bootmem(struct page *page, unsigned long pfn,
                                         unsigned int order);
-extern void prep_compound_page(struct page *page, unsigned long order);
+extern void prep_compound_page(struct page *page, unsigned int order);
 #ifdef CONFIG_MEMORY_FAILURE
 extern bool is_free_buddy_page(struct page *page);
 #endif
@@ -235,7 +235,7 @@ int find_suitable_fallback(struct free_area *area, unsigned int order,
  * page cannot be allocated or merged in parallel. Alternatively, it must
  * handle invalid values gracefully, and use page_order_unsafe() below.
  */
-static inline unsigned long page_order(struct page *page)
+static inline unsigned int page_order(struct page *page)
 {
         /* PageBuddy() must be checked by the caller */
         return page_private(page);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e361001519d3..208e4c7e771b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -181,7 +181,7 @@ bool pm_suspended_storage(void)
 #endif /* CONFIG_PM_SLEEP */
 
 #ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
-int pageblock_order __read_mostly;
+unsigned int pageblock_order __read_mostly;
 #endif
 
 static void __free_pages_ok(struct page *page, unsigned int order);
@@ -462,7 +462,7 @@ static void free_compound_page(struct page *page)
         __free_pages_ok(page, compound_order(page));
 }
 
-void prep_compound_page(struct page *page, unsigned long order)
+void prep_compound_page(struct page *page, unsigned int order)
 {
         int i;
         int nr_pages = 1 << order;
@@ -662,7 +662,7 @@ static inline void __free_one_page(struct page *page,
         unsigned long combined_idx;
         unsigned long uninitialized_var(buddy_idx);
         struct page *buddy;
-        int max_order = MAX_ORDER;
+        unsigned int max_order = MAX_ORDER;
 
         VM_BUG_ON(!zone_is_initialized(zone));
         VM_BUG_ON_PAGE(page->flags & PAGE_FLAGS_CHECK_AT_PREP, page);
@@ -675,7 +675,7 @@ static inline void __free_one_page(struct page *page,
                  * pageblock. Without this, pageblock isolation
                  * could cause incorrect freepage accounting.
                  */
-                max_order = min(MAX_ORDER, pageblock_order + 1);
+                max_order = min_t(unsigned int, MAX_ORDER, pageblock_order + 1);
         } else {
                 __mod_zone_freepage_state(zone, 1 << order, migratetype);
         }
@@ -1471,7 +1471,7 @@ int move_freepages(struct zone *zone,
                           int migratetype)
 {
         struct page *page;
-        unsigned long order;
+        unsigned int order;
         int pages_moved = 0;
 
 #ifndef CONFIG_HOLES_IN_ZONE
@@ -1584,7 +1584,7 @@ static bool can_steal_fallback(unsigned int order, int start_mt)
 static void steal_suitable_fallback(struct zone *zone, struct page *page,
                                                           int start_type)
 {
-        int current_order = page_order(page);
+        unsigned int current_order = page_order(page);
         int pages;
 
         /* Take ownership for orders >= pageblock_order */
@@ -2637,7 +2637,7 @@ static DEFINE_RATELIMIT_STATE(nopage_rs,
                 DEFAULT_RATELIMIT_INTERVAL,
                 DEFAULT_RATELIMIT_BURST);
 
-void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...)
+void warn_alloc_failed(gfp_t gfp_mask, unsigned int order, const char *fmt, ...)
 {
         unsigned int filter = SHOW_MEM_FILTER_NODES;
 
@@ -2671,7 +2671,7 @@ void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...)
                 va_end(args);
         }
 
-        pr_warn("%s: page allocation failure: order:%d, mode:0x%x\n",
+        pr_warn("%s: page allocation failure: order:%u, mode:0x%x\n",
                 current->comm, order, gfp_mask);
 
         dump_stack();
@@ -3449,7 +3449,8 @@ void free_kmem_pages(unsigned long addr, unsigned int order)
         }
 }
 
-static void *make_alloc_exact(unsigned long addr, unsigned order, size_t size)
+static void *make_alloc_exact(unsigned long addr, unsigned int order,
+                size_t size)
 {
         if (addr) {
                 unsigned long alloc_end = addr + (PAGE_SIZE << order);
@@ -3499,7 +3500,7 @@ EXPORT_SYMBOL(alloc_pages_exact);
  */
 void * __meminit alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask)
 {
-        unsigned order = get_order(size);
+        unsigned int order = get_order(size);
         struct page *p = alloc_pages_node(nid, gfp_mask, order);
         if (!p)
                 return NULL;
@@ -3800,7 +3801,8 @@ void show_free_areas(unsigned int filter)
         }
 
         for_each_populated_zone(zone) {
-                unsigned long nr[MAX_ORDER], flags, order, total = 0;
+                unsigned int order;
+                unsigned long nr[MAX_ORDER], flags, total = 0;
                 unsigned char types[MAX_ORDER];
 
                 if (skip_free_areas_node(filter, zone_to_nid(zone)))
@@ -4149,7 +4151,7 @@ static void build_zonelists(pg_data_t *pgdat)
         nodemask_t used_mask;
         int local_node, prev_node;
         struct zonelist *zonelist;
-        int order = current_zonelist_order;
+        unsigned int order = current_zonelist_order;
 
         /* initialize zonelists */
         for (i = 0; i < MAX_ZONELISTS; i++) {
@@ -6678,7 +6680,8 @@ int alloc_contig_range(unsigned long start, unsigned long end,
                        unsigned migratetype)
 {
         unsigned long outer_start, outer_end;
-        int ret = 0, order;
+        unsigned int order;
+        int ret = 0;
 
         struct compact_control cc = {
                 .nr_migratepages = 0,