1 files changed, 31 insertions, 13 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5717f27a0704..bf720550b44d 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -234,6 +234,12 @@ static void bad_page(struct page *page)
         static unsigned long nr_shown;
         static unsigned long nr_unshown;
 
+        /* Don't complain about poisoned pages */
+        if (PageHWPoison(page)) {
+                __ClearPageBuddy(page);
+                return;
+        }
+
         /*
          * Allow a burst of 60 reports, then keep quiet for that minute;
          * or allow a steady drip of one report per second.
@@ -666,7 +672,7 @@ static inline void expand(struct zone *zone, struct page *page,
 /*
  * This page is about to be returned from the page allocator
  */
-static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
+static inline int check_new_page(struct page *page)
 {
         if (unlikely(page_mapcount(page) |
                 (page->mapping != NULL)  |
@@ -675,6 +681,18 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
                 bad_page(page);
                 return 1;
         }
+        return 0;
+}
+
+static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
+{
+        int i;
+
+        for (i = 0; i < (1 << order); i++) {
+                struct page *p = page + i;
+                if (unlikely(check_new_page(p)))
+                        return 1;
+        }
 
         set_page_private(page, 0);
         set_page_refcounted(page);
@@ -2373,7 +2391,7 @@ early_param("numa_zonelist_order", setup_numa_zonelist_order);
  * sysctl handler for numa_zonelist_order
  */
 int numa_zonelist_order_handler(ctl_table *table, int write,
-                struct file *file, void __user *buffer, size_t *length,
+                void __user *buffer, size_t *length,
                 loff_t *ppos)
 {
         char saved_string[NUMA_ZONELIST_ORDER_LEN];
@@ -2382,7 +2400,7 @@ int numa_zonelist_order_handler(ctl_table *table, int write,
         if (write)
                 strncpy(saved_string, (char*)table->data,
                         NUMA_ZONELIST_ORDER_LEN);
-        ret = proc_dostring(table, write, file, buffer, length, ppos);
+        ret = proc_dostring(table, write, buffer, length, ppos);
         if (ret)
                 return ret;
         if (write) {
@@ -4706,9 +4724,9 @@ module_init(init_per_zone_wmark_min)
  *      changes.
  */
 int min_free_kbytes_sysctl_handler(ctl_table *table, int write, 
-        struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+        void __user *buffer, size_t *length, loff_t *ppos)
 {
-        proc_dointvec(table, write, file, buffer, length, ppos);
+        proc_dointvec(table, write, buffer, length, ppos);
         if (write)
                 setup_per_zone_wmarks();
         return 0;
@@ -4716,12 +4734,12 @@ int min_free_kbytes_sysctl_handler(ctl_table *table, int write,
 
 #ifdef CONFIG_NUMA
 int sysctl_min_unmapped_ratio_sysctl_handler(ctl_table *table, int write,
-        struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+        void __user *buffer, size_t *length, loff_t *ppos)
 {
         struct zone *zone;
         int rc;
 
-        rc = proc_dointvec_minmax(table, write, file, buffer, length, ppos);
+        rc = proc_dointvec_minmax(table, write, buffer, length, ppos);
         if (rc)
                 return rc;
 
@@ -4732,12 +4750,12 @@ int sysctl_min_unmapped_ratio_sysctl_handler(ctl_table *table, int write,
 }
 
 int sysctl_min_slab_ratio_sysctl_handler(ctl_table *table, int write,
-        struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+        void __user *buffer, size_t *length, loff_t *ppos)
 {
         struct zone *zone;
         int rc;
 
-        rc = proc_dointvec_minmax(table, write, file, buffer, length, ppos);
+        rc = proc_dointvec_minmax(table, write, buffer, length, ppos);
         if (rc)
                 return rc;
 
@@ -4758,9 +4776,9 @@ int sysctl_min_slab_ratio_sysctl_handler(ctl_table *table, int write,
  * if in function of the boot time zone sizes.
  */
 int lowmem_reserve_ratio_sysctl_handler(ctl_table *table, int write,
-        struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+        void __user *buffer, size_t *length, loff_t *ppos)
 {
-        proc_dointvec_minmax(table, write, file, buffer, length, ppos);
+        proc_dointvec_minmax(table, write, buffer, length, ppos);
         setup_per_zone_lowmem_reserve();
         return 0;
 }
@@ -4772,13 +4790,13 @@ int lowmem_reserve_ratio_sysctl_handler(ctl_table *table, int write,
  */
 
 int percpu_pagelist_fraction_sysctl_handler(ctl_table *table, int write,
-        struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+        void __user *buffer, size_t *length, loff_t *ppos)
 {
         struct zone *zone;
         unsigned int cpu;
         int ret;
 
-        ret = proc_dointvec_minmax(table, write, file, buffer, length, ppos);
+        ret = proc_dointvec_minmax(table, write, buffer, length, ppos);
         if (!write || (ret == -EINVAL))
                 return ret;
         for_each_populated_zone(zone) {