drm/radeon: don't allow device to be opened if powered down

[mv-sheeva.git] / mm / backing-dev.c

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index eaa4a5bbe0634390fc802ebffdbad4291fa3b991..c2bf86f470ed0044ab7366d5e6ea95a4aea2adf2 100644 (file)
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -445,8 +445,8 @@ static int bdi_forker_thread(void *ptr)
                switch (action) {
                case FORK_THREAD:
                        __set_current_state(TASK_RUNNING);
-                       task = kthread_run(bdi_writeback_thread, &bdi->wb, "flush-%s",
-                                          dev_name(bdi->dev));
+                       task = kthread_create(bdi_writeback_thread, &bdi->wb,
+                                             "flush-%s", dev_name(bdi->dev));
                        if (IS_ERR(task)) {
                                /*
                                 * If thread creation fails, force writeout of
@@ -457,10 +457,13 @@ static int bdi_forker_thread(void *ptr)
                                /*
                                 * The spinlock makes sure we do not lose
                                 * wake-ups when racing with 'bdi_queue_work()'.
+                                * And as soon as the bdi thread is visible, we
+                                * can start it.
                                 */
                                spin_lock_bh(&bdi->wb_lock);
                                bdi->wb.task = task;
                                spin_unlock_bh(&bdi->wb_lock);
+                               wake_up_process(task);
                        }
                        break;