1 files changed, 23 insertions, 0 deletions

diff --git a/mm/memory.c b/mm/memory.c
index 0f9abbaf618c..b12888c1b4e3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -383,6 +383,29 @@ static void print_bad_pte(struct vm_area_struct *vma, unsigned long addr,
         pmd_t *pmd = pmd_offset(pud, addr);
         struct address_space *mapping;
         pgoff_t index;
+        static unsigned long resume;
+        static unsigned long nr_shown;
+        static unsigned long nr_unshown;
+
+        /*
+         * 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++;
+                        return;
+                }
+                if (nr_unshown) {
+                        printk(KERN_EMERG
+                                "Bad page map: %lu messages suppressed\n",
+                                nr_unshown);
+                        nr_unshown = 0;
+                }
+                nr_shown = 0;
+        }
+        if (nr_shown++ == 0)
+                resume = jiffies + 60 * HZ;
 
         mapping = vma->vm_file ? vma->vm_file->f_mapping : NULL;
         index = linear_page_index(vma, addr);