+static int raid5_issue_flush(request_queue_t *q, struct gendisk *disk,
+ sector_t *error_sector)
+{
+ mddev_t *mddev = q->queuedata;
+ raid5_conf_t *conf = mddev_to_conf(mddev);
+ int i, ret = 0;
+
+ for (i=0; i<mddev->raid_disks; i++) {
+ mdk_rdev_t *rdev = conf->disks[i].rdev;
+ if (rdev && !rdev->faulty) {
+ struct block_device *bdev = rdev->bdev;
+ request_queue_t *r_queue;
+
+ if (!bdev)
+ continue;
+
+ r_queue = bdev_get_queue(bdev);
+ if (!r_queue)
+ continue;
+
+ if (!r_queue->issue_flush_fn) {
+ ret = -EOPNOTSUPP;
+ break;
+ }
+
+ ret = r_queue->issue_flush_fn(r_queue, bdev->bd_disk, error_sector);
+ if (ret)
+ break;
+ }
+ }
+ return ret;
+}
+