block: convert blkdev_issue_flush() to use empty barriers

[firefly-linux-kernel-4.4.55.git] / drivers / md / raid0.c

diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index ef0da2d8495969de264563ce7ee6751afe002aff..e79e1a538d44cda459f00dffa89e4c93bc15b421 100644 (file)
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -40,26 +40,6 @@ static void raid0_unplug(struct request_queue *q)
        }
 }
 
-static int raid0_issue_flush(struct request_queue *q, struct gendisk *disk,
-                            sector_t *error_sector)
-{
-       mddev_t *mddev = q->queuedata;
-       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 == 0; i++) {
-               struct block_device *bdev = devlist[i]->bdev;
-               struct request_queue *r_queue = bdev_get_queue(bdev);
-
-               if (!r_queue->issue_flush_fn)
-                       ret = -EOPNOTSUPP;
-               else
-                       ret = r_queue->issue_flush_fn(r_queue, bdev->bd_disk, error_sector);
-       }
-       return ret;
-}
-
 static int raid0_congested(void *data, int bits)
 {
        mddev_t *mddev = data;
@@ -250,7 +230,6 @@ 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;