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-rw-r--r--drivers/md/md.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index c068f171b4eb..14d3b37944df 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -284,6 +284,8 @@ static blk_qc_t md_make_request(struct request_queue *q, struct bio *bio)
 	 * go away inside make_request
 	 */
 	sectors = bio_sectors(bio);
+	/* bio could be mergeable after passing to underlayer */
+	bio->bi_rw &= ~REQ_NOMERGE;
 	mddev->pers->make_request(mddev, bio);
 
 	cpu = part_stat_lock();
@@ -718,6 +720,7 @@ static void super_written(struct bio *bio)
 
 	if (atomic_dec_and_test(&mddev->pending_writes))
 		wake_up(&mddev->sb_wait);
+	rdev_dec_pending(rdev, mddev);
 	bio_put(bio);
 }
 
@@ -732,6 +735,8 @@ void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
 	 */
 	struct bio *bio = bio_alloc_mddev(GFP_NOIO, 1, mddev);
 
+	atomic_inc(&rdev->nr_pending);
+
 	bio->bi_bdev = rdev->meta_bdev ? rdev->meta_bdev : rdev->bdev;
 	bio->bi_iter.bi_sector = sector;
 	bio_add_page(bio, page, size, 0);
@@ -6883,7 +6888,7 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode,
 
 	case ADD_NEW_DISK:
 		/* We can support ADD_NEW_DISK on read-only arrays
-		 * on if we are re-adding a preexisting device.
+		 * only if we are re-adding a preexisting device.
 		 * So require mddev->pers and MD_DISK_SYNC.
 		 */
 		if (mddev->pers) {