sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file

[safe/jmp/linux-2.6] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 5717f27..2bc2ac6 100644 (file)
--- 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);
@@ -1751,7 +1769,7 @@ gfp_to_alloc_flags(gfp_t gfp_mask)
                 * See also cpuset_zone_allowed() comment in kernel/cpuset.c.
                 */
                alloc_flags &= ~ALLOC_CPUSET;
-       } else if (unlikely(rt_task(p)))
+       } else if (unlikely(rt_task(p)) && !in_interrupt())
                alloc_flags |= ALLOC_HARDER;
 
        if (likely(!(gfp_mask & __GFP_NOMEMALLOC))) {
@@ -1799,9 +1817,9 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
        if (NUMA_BUILD && (gfp_mask & GFP_THISNODE) == GFP_THISNODE)
                goto nopage;
 
+restart:
        wake_all_kswapd(order, zonelist, high_zoneidx);
 
-restart:
        /*
         * OK, we're below the kswapd watermark and have kicked background
         * reclaim. Now things get more complex, so set up alloc_flags according
@@ -2165,7 +2183,7 @@ void show_free_areas(void)
        printk("active_anon:%lu inactive_anon:%lu isolated_anon:%lu\n"
                " active_file:%lu inactive_file:%lu isolated_file:%lu\n"
                " unevictable:%lu"
-               " dirty:%lu writeback:%lu unstable:%lu buffer:%lu\n"
+               " dirty:%lu writeback:%lu unstable:%lu\n"
                " free:%lu slab_reclaimable:%lu slab_unreclaimable:%lu\n"
                " mapped:%lu shmem:%lu pagetables:%lu bounce:%lu\n",
                global_page_state(NR_ACTIVE_ANON),
@@ -2178,7 +2196,6 @@ void show_free_areas(void)
                global_page_state(NR_FILE_DIRTY),
                global_page_state(NR_WRITEBACK),
                global_page_state(NR_UNSTABLE_NFS),
-               nr_blockdev_pages(),
                global_page_state(NR_FREE_PAGES),
                global_page_state(NR_SLAB_RECLAIMABLE),
                global_page_state(NR_SLAB_UNRECLAIMABLE),
@@ -2373,7 +2390,7 @@ 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 +2399,7 @@ 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 +4723,9 @@ 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 +4733,12 @@ 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 +4749,12 @@ 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 +4775,9 @@ 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 +4789,13 @@ 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) {