[PATCH] md: define backing_dev_info.congested_fn for raid0 and linear
[linux-2.6.git] / drivers / md / raid0.c
index cb8c631..dfe3214 100644 (file)
@@ -60,6 +60,21 @@ static int raid0_issue_flush(request_queue_t *q, struct gendisk *disk,
        return ret;
 }
 
+static int raid0_congested(void *data, int bits)
+{
+       mddev_t *mddev = data;
+       raid0_conf_t *conf = mddev_to_conf(mddev);
+       mdk_rdev_t **devlist = conf->strip_zone[0].dev;
+       int i, ret = 0;
+
+       for (i = 0; i < mddev->raid_disks && !ret ; i++) {
+               request_queue_t *q = bdev_get_queue(devlist[i]->bdev);
+
+               ret |= bdi_congested(&q->backing_dev_info, bits);
+       }
+       return ret;
+}
+
 
 static int create_strip_zones (mddev_t *mddev)
 {
@@ -236,6 +251,8 @@ static int create_strip_zones (mddev_t *mddev)
        mddev->queue->unplug_fn = raid0_unplug;
 
        mddev->queue->issue_flush_fn = raid0_issue_flush;
+       mddev->queue->backing_dev_info.congested_fn = raid0_congested;
+       mddev->queue->backing_dev_info.congested_data = mddev;
 
        printk("raid0: done.\n");
        return 0;