wait_on_bit: add an acquire memory barrier

[linux-2.6-microblaze.git] / kernel / sched / wait_bit.c

diff --git a/kernel/sched/wait_bit.c b/kernel/sched/wait_bit.c
index d4788f8..0b1cd98 100644 (file)
--- a/kernel/sched/wait_bit.c
+++ b/kernel/sched/wait_bit.c
@@ -47,7 +47,7 @@ __wait_on_bit(struct wait_queue_head *wq_head, struct wait_bit_queue_entry *wbq_
                prepare_to_wait(wq_head, &wbq_entry->wq_entry, mode);
                if (test_bit(wbq_entry->key.bit_nr, wbq_entry->key.flags))
                        ret = (*action)(&wbq_entry->key, mode);
-       } while (test_bit(wbq_entry->key.bit_nr, wbq_entry->key.flags) && !ret);
+       } while (test_bit_acquire(wbq_entry->key.bit_nr, wbq_entry->key.flags) && !ret);
 
        finish_wait(wq_head, &wbq_entry->wq_entry);