memory hotplug: fix page_zone() calculation in test_pages_isolated()

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

diff --git a/mm/pdflush.c b/mm/pdflush.c
index 9d834aa..0cbe0c6 100644 (file)
--- a/mm/pdflush.c
+++ b/mm/pdflush.c
@@ -130,7 +130,7 @@ static int __pdflush(struct pdflush_work *my_work)
                 * Thread creation: For how long have there been zero
                 * available threads?
                 */
-               if (jiffies - last_empty_jifs > 1 * HZ) {
+               if (time_after(jiffies, last_empty_jifs + 1 * HZ)) {
                        /* unlocked list_empty() test is OK here */
                        if (list_empty(&pdflush_list)) {
                                /* unlocked test is OK here */
@@ -151,7 +151,7 @@ static int __pdflush(struct pdflush_work *my_work)
                if (nr_pdflush_threads <= MIN_PDFLUSH_THREADS)
                        continue;
                pdf = list_entry(pdflush_list.prev, struct pdflush_work, list);
-               if (jiffies - pdf->when_i_went_to_sleep > 1 * HZ) {
+               if (time_after(jiffies, pdf->when_i_went_to_sleep + 1 * HZ)) {
                        /* Limit exit rate */
                        pdf->when_i_went_to_sleep = jiffies;
                        break;                                  /* exeunt */