unsigned long totalram_pages __read_mostly;
unsigned long totalreserve_pages __read_mostly;
+unsigned long highest_memmap_pfn __read_mostly;
int percpu_pagelist_fraction;
#ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE
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",
- current->comm, page, (int)(2*sizeof(unsigned long)),
- (unsigned long)page->flags, page->mapping,
- page_mapcount(page), page_count(page));
+ static unsigned long resume;
+ static unsigned long nr_shown;
+ static unsigned long nr_unshown;
- printk(KERN_EMERG "Trying to fix it up, but a reboot is needed\n"
- KERN_EMERG "Backtrace:\n");
- dump_stack();
+ /*
+ * Allow a burst of 60 reports, then keep quiet for that minute;
+ * or allow a steady drip of one report per second.
+ */
+ if (nr_shown == 60) {
+ if (time_before(jiffies, resume)) {
+ nr_unshown++;
+ goto out;
+ }
+ if (nr_unshown) {
+ printk(KERN_ALERT
+ "BUG: Bad page state: %lu messages suppressed\n",
+ nr_unshown);
+ nr_unshown = 0;
+ }
+ nr_shown = 0;
+ }
+ if (nr_shown++ == 0)
+ resume = jiffies + 60 * HZ;
+ printk(KERN_ALERT "BUG: Bad page state in process %s pfn:%05lx\n",
+ current->comm, page_to_pfn(page));
+ printk(KERN_ALERT
+ "page:%p flags:%p count:%d mapcount:%d mapping:%p index:%lx\n",
+ page, (void *)page->flags, page_count(page),
+ page_mapcount(page), page->mapping, page->index);
+
+ dump_stack();
+out:
/* Leave bad fields for debug, except PageBuddy could make trouble */
__ClearPageBuddy(page);
add_taint(TAINT_BAD_PAGE);
unsigned long pfn;
struct zone *z;
+ if (highest_memmap_pfn < end_pfn - 1)
+ highest_memmap_pfn = end_pfn - 1;
+
z = &NODE_DATA(nid)->node_zones[zone];
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
/*
INIT_LIST_HEAD(&zone->lru[l].list);
zone->lru[l].nr_scan = 0;
}
- zone->recent_rotated[0] = 0;
- zone->recent_rotated[1] = 0;
- zone->recent_scanned[0] = 0;
- zone->recent_scanned[1] = 0;
+ zone->reclaim_stat.recent_rotated[0] = 0;
+ zone->reclaim_stat.recent_rotated[1] = 0;
+ zone->reclaim_stat.recent_scanned[0] = 0;
+ zone->reclaim_stat.recent_scanned[1] = 0;
zap_zone_vm_stats(zone);
zone->flags = 0;
if (!size)
return table;
}
-#ifdef CONFIG_OUT_OF_LINE_PFN_TO_PAGE
-struct page *pfn_to_page(unsigned long pfn)
-{
- return __pfn_to_page(pfn);
-}
-unsigned long page_to_pfn(struct page *page)
-{
- return __page_to_pfn(page);
-}
-EXPORT_SYMBOL(pfn_to_page);
-EXPORT_SYMBOL(page_to_pfn);
-#endif /* CONFIG_OUT_OF_LINE_PFN_TO_PAGE */
-
/* Return a pointer to the bitmap storing bits affecting a block of pages */
static inline unsigned long *get_pageblock_bitmap(struct zone *zone,
unsigned long pfn)