tcp: enforce tcp_min_snd_mss in tcp_mtu_probing()

[pandora-kernel.git] / mm / page_alloc.c

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 092c992..5961c93 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -59,6 +59,7 @@
 #include <linux/prefetch.h>
 #include <linux/migrate.h>
 #include <linux/page-debug-flags.h>
+#include <linux/nmi.h>
 
 #include <asm/tlbflush.h>
 #include <asm/div64.h>
@@ -1241,9 +1242,14 @@ void drain_all_pages(void)
 
 #ifdef CONFIG_HIBERNATION
 
+/*
+ * Touch the watchdog for every WD_PAGE_COUNT pages.
+ */
+#define WD_PAGE_COUNT  (128*1024)
+
 void mark_free_pages(struct zone *zone)
 {
-       unsigned long pfn, max_zone_pfn;
+       unsigned long pfn, max_zone_pfn, page_count = WD_PAGE_COUNT;
        unsigned long flags;
        int order, t;
        struct list_head *curr;
@@ -1258,6 +1264,11 @@ void mark_free_pages(struct zone *zone)
                if (pfn_valid(pfn)) {
                        struct page *page = pfn_to_page(pfn);
 
+                       if (!--page_count) {
+                               touch_nmi_watchdog();
+                               page_count = WD_PAGE_COUNT;
+                       }
+
                        if (!swsusp_page_is_forbidden(page))
                                swsusp_unset_page_free(page);
                }
@@ -1267,8 +1278,13 @@ void mark_free_pages(struct zone *zone)
                        unsigned long i;
 
                        pfn = page_to_pfn(list_entry(curr, struct page, lru));
-                       for (i = 0; i < (1UL << order); i++)
+                       for (i = 0; i < (1UL << order); i++) {
+                               if (!--page_count) {
+                                       touch_nmi_watchdog();
+                                       page_count = WD_PAGE_COUNT;
+                               }
                                swsusp_set_page_free(pfn_to_page(pfn + i));
+                       }
                }
        }
        spin_unlock_irqrestore(&zone->lock, flags);