mm: highmem kernel-doc additions

[sfrench/cifs-2.6.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 26a54a17dc9f5dfc0191da8f0dd774476ab8eee0..402a504f12283f23cb510ec9ebfce4d0d52eea29 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -19,6 +19,7 @@
 #include <linux/swap.h>
 #include <linux/interrupt.h>
 #include <linux/pagemap.h>
+#include <linux/jiffies.h>
 #include <linux/bootmem.h>
 #include <linux/compiler.h>
 #include <linux/kernel.h>
@@ -221,13 +222,19 @@ static inline int bad_range(struct zone *zone, struct page *page)
 
 static void bad_page(struct page *page)
 {
-       printk(KERN_EMERG "Bad page state in process '%s'\n"
-               KERN_EMERG "page:%p flags:0x%0*lx mapping:%p mapcount:%d count:%d\n"
-               KERN_EMERG "Trying to fix it up, but a reboot is needed\n"
-               KERN_EMERG "Backtrace:\n",
+       void *pc = page_get_page_cgroup(page);
+
+       printk(KERN_EMERG "Bad page state in process '%s'\n" KERN_EMERG
+               "page:%p flags:0x%0*lx mapping:%p mapcount:%d count:%d\n",
                current->comm, page, (int)(2*sizeof(unsigned long)),
                (unsigned long)page->flags, page->mapping,
                page_mapcount(page), page_count(page));
+       if (pc) {
+               printk(KERN_EMERG "cgroup:%p\n", pc);
+               page_reset_bad_cgroup(page);
+       }
+       printk(KERN_EMERG "Trying to fix it up, but a reboot is needed\n"
+               KERN_EMERG "Backtrace:\n");
        dump_stack();
        page->flags &= ~(1 << PG_lru    |
                        1 << PG_private |
@@ -453,6 +460,7 @@ static inline int free_pages_check(struct page *page)
 {
        if (unlikely(page_mapcount(page) |
                (page->mapping != NULL)  |
+               (page_get_page_cgroup(page) != NULL) |
                (page_count(page) != 0)  |
                (page->flags & (
                        1 << PG_lru     |
@@ -602,6 +610,7 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
 {
        if (unlikely(page_mapcount(page) |
                (page->mapping != NULL)  |
+               (page_get_page_cgroup(page) != NULL) |
                (page_count(page) != 0)  |
                (page->flags & (
                        1 << PG_lru     |
@@ -988,7 +997,6 @@ static void free_hot_cold_page(struct page *page, int cold)
 
        if (!PageHighMem(page))
                debug_check_no_locks_freed(page_address(page), PAGE_SIZE);
-       VM_BUG_ON(page_get_page_cgroup(page));
        arch_free_page(page, 0);
        kernel_map_pages(page, 1, 0);
 
@@ -1276,7 +1284,7 @@ static nodemask_t *zlc_setup(struct zonelist *zonelist, int alloc_flags)
        if (!zlc)
                return NULL;
 
-       if (jiffies - zlc->last_full_zap > 1 * HZ) {
+       if (time_after(jiffies, zlc->last_full_zap + HZ)) {
                bitmap_zero(zlc->fullzones, MAX_ZONES_PER_ZONELIST);
                zlc->last_full_zap = jiffies;
        }
@@ -1451,7 +1459,7 @@ try_next_zone:
 /*
  * This is the 'heart' of the zoned buddy allocator.
  */
-struct page * fastcall
+struct page *
 __alloc_pages(gfp_t gfp_mask, unsigned int order,
                struct zonelist *zonelist)
 {
@@ -2527,7 +2535,6 @@ void __meminit memmap_init_zone(unsigned long size, int nid, unsigned long zone,
                set_page_links(page, zone, nid, pfn);
                init_page_count(page);
                reset_page_mapcount(page);
-               page_assign_page_cgroup(page, NULL);
                SetPageReserved(page);
 
                /*
@@ -3314,7 +3321,7 @@ static inline int pageblock_default_order(unsigned int order)
  *   - mark all memory queues empty
  *   - clear the memory bitmaps
  */
-static void __meminit free_area_init_core(struct pglist_data *pgdat,
+static void __paginginit free_area_init_core(struct pglist_data *pgdat,
                unsigned long *zones_size, unsigned long *zholes_size)
 {
        enum zone_type j;
@@ -3438,7 +3445,7 @@ static void __init_refok alloc_node_mem_map(struct pglist_data *pgdat)
 #endif /* CONFIG_FLAT_NODE_MEM_MAP */
 }
 
-void __meminit free_area_init_node(int nid, struct pglist_data *pgdat,
+void __paginginit free_area_init_node(int nid, struct pglist_data *pgdat,
                unsigned long *zones_size, unsigned long node_start_pfn,
                unsigned long *zholes_size)
 {