block: handle blk_pm_resume_request() requests in blk_execute_rq_nowa…

…it() For blk_pm_resume_request() requests (which are used only by IDE subsystem currently) the queue is stopped so we need to call ->request_fn explicitly. Thanks to: - Rafael for reporting/bisecting the bug - Borislav/Rafael for testing the fix This is a preparation for converting IDE to use blk_execute_rq(). Cc: FUJITA Tomonori <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Jens Axboe <[email protected]> Cc: "Rafael J. Wysocki" <[email protected]> Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
patjak · Jul 15, 2008 · 9a2d43b · 9a2d43b
1 parent 64ea1b4
commit 9a2d43b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/block/blk-exec.c b/block/blk-exec.c
@@ -58,6 +58,9 @@ void blk_execute_rq_nowait(struct request_queue *q, struct gendisk *bd_disk,
 	spin_lock_irq(q->queue_lock);
 	__elv_add_request(q, rq, where, 1);
 	__generic_unplug_device(q);
+	/* the queue is stopped so it won't be plugged+unplugged */
+	if (blk_pm_resume_request(rq))
+		q->request_fn(q);
 	spin_unlock_irq(q->queue_lock);
 }
 EXPORT_SYMBOL_GPL(blk_execute_rq_nowait);