flusher: Fix PF_FROZEN race

[safe/jmp/linux-2.6] / mm / memory-failure.c

diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index e354b9f..dacc641 100644 (file)
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -613,13 +613,16 @@ static int page_action(struct page_state *ps, struct page *p,
                        unsigned long pfn, int ref)
 {
        int result;
+       int count;
 
        result = ps->action(p, pfn);
        action_result(pfn, ps->msg, result);
-       if (page_count(p) != 1 + ref)
+
+       count = page_count(p) - 1 - ref;
+       if (count != 0)
                printk(KERN_ERR
                       "MCE %#lx: %s page still referenced by %d users\n",
-                      pfn, ps->msg, page_count(p) - 1);
+                      pfn, ps->msg, count);
 
        /* Could do more checks here if page looks ok */
        /*