Merge branch 'md-next' of https://github.com/liu-song-6/linux into for-5.1/block

Pull MD changes for 5.1 from Song.

* 'md-next' of https://github.com/liu-song-6/linux:
  raid1: simplify raid1_error function
  md-linear: use struct_size() in kzalloc()

drivers/md/md-linear.c

@@ -96,8 +96,7 @@ static struct linear_conf *linear_conf(struct mddev *mddev, int raid_disks)
 	int i, cnt;
 	bool discard_supported = false;
 
-	conf = kzalloc (sizeof (*conf) + raid_disks*sizeof(struct dev_info),
-			GFP_KERNEL);
+	conf = kzalloc(struct_size(conf, disks, raid_disks), GFP_KERNEL);
 	if (!conf)
 		return NULL;
 

drivers/md/raid1.c

@@ -1603,11 +1603,9 @@ static void raid1_error(struct mddev *mddev, struct md_rdev *rdev)
 		return;
 	}
 	set_bit(Blocked, &rdev->flags);
-	if (test_and_clear_bit(In_sync, &rdev->flags)) {
+	if (test_and_clear_bit(In_sync, &rdev->flags))
 		mddev->degraded++;
 	set_bit(Faulty, &rdev->flags);
-	} else
-		set_bit(Faulty, &rdev->flags);
 	spin_unlock_irqrestore(&conf->device_lock, flags);
 	/*
 	 * if recovery is running, make sure it aborts.