diff --git a/fs/block_dev.c b/fs/block_dev.c
index 6016777b6483..0c533ac92e24 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1407,46 +1407,12 @@ EXPORT_SYMBOL_GPL(bdev_disk_changed);
  *  mutex_lock(part->bd_mutex)
  *    mutex_lock_nested(whole->bd_mutex, 1)
  */
-
-static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
-		int for_part)
+static int __blkdev_get(struct block_device *bdev, struct gendisk *disk,
+		int partno, fmode_t mode)
 {
-	struct block_device *whole = NULL, *claiming = NULL;
-	struct gendisk *disk;
 	int ret;
-	int partno;
-	bool first_open = false, unblock_events = true, need_restart;
 
- restart:
-	need_restart = false;
-	ret = -ENXIO;
-	disk = bdev_get_gendisk(bdev, &partno);
-	if (!disk)
-		goto out;
-
-	if (partno) {
-		whole = bdget_disk(disk, 0);
-		if (!whole) {
-			ret = -ENOMEM;
-			goto out_put_disk;
-		}
-	}
-
-	if (!for_part && (mode & FMODE_EXCL)) {
-		WARN_ON_ONCE(!holder);
-		if (whole)
-			claiming = whole;
-		else
-			claiming = bdev;
-		ret = bd_prepare_to_claim(bdev, claiming, holder);
-		if (ret)
-			goto out_put_whole;
-	}
-
-	disk_block_events(disk);
-	mutex_lock_nested(&bdev->bd_mutex, for_part);
 	if (!bdev->bd_openers) {
-		first_open = true;
 		bdev->bd_disk = disk;
 		bdev->bd_contains = bdev;
 		bdev->bd_partno = partno;
@@ -1458,15 +1424,8 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
 				goto out_clear;
 
 			ret = 0;
-			if (disk->fops->open) {
+			if (disk->fops->open)
 				ret = disk->fops->open(bdev, mode);
-				/*
-				 * If we lost a race with 'disk' being deleted,
-				 * try again.  See md.c
-				 */
-				if (ret == -ERESTARTSYS)
-					need_restart = true;
-			}
 
 			if (!ret) {
 				bd_set_nr_sectors(bdev, get_capacity(disk));
@@ -1486,14 +1445,23 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
 			if (ret)
 				goto out_clear;
 		} else {
-			BUG_ON(for_part);
-			ret = __blkdev_get(whole, mode, NULL, 1);
-			if (ret)
+			struct block_device *whole = bdget_disk(disk, 0);
+
+			mutex_lock_nested(&whole->bd_mutex, 1);
+			ret = __blkdev_get(whole, disk, 0, mode);
+			if (ret) {
+				mutex_unlock(&whole->bd_mutex);
+				bdput(whole);
 				goto out_clear;
-			bdev->bd_contains = bdgrab(whole);
+			}
+			whole->bd_part_count++;
+			mutex_unlock(&whole->bd_mutex);
+
+			bdev->bd_contains = whole;
 			bdev->bd_part = disk_get_part(disk, partno);
 			if (!(disk->flags & GENHD_FL_UP) ||
 			    !bdev->bd_part || !bdev->bd_part->nr_sects) {
+				__blkdev_put(whole, mode, 1);
 				ret = -ENXIO;
 				goto out_clear;
 			}
@@ -1513,58 +1481,17 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
 			    (!ret || ret == -ENOMEDIUM))
 				bdev_disk_changed(bdev, ret == -ENOMEDIUM);
 			if (ret)
-				goto out_unlock_bdev;
+				return ret;
 		}
 	}
 	bdev->bd_openers++;
-	if (for_part)
-		bdev->bd_part_count++;
-	if (claiming)
-		bd_finish_claiming(bdev, claiming, holder);
-
-	/*
-	 * Block event polling for write claims if requested.  Any write holder
-	 * makes the write_holder state stick until all are released.  This is
-	 * good enough and tracking individual writeable reference is too
-	 * fragile given the way @mode is used in blkdev_get/put().
-	 */
-	if (claiming && (mode & FMODE_WRITE) && !bdev->bd_write_holder &&
-	    (disk->flags & GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE)) {
-		bdev->bd_write_holder = true;
-		unblock_events = false;
-	}
-	mutex_unlock(&bdev->bd_mutex);
-
-	if (unblock_events)
-		disk_unblock_events(disk);
-
-	/* only one opener holds refs to the module and disk */
-	if (!first_open)
-		put_disk_and_module(disk);
-	if (whole)
-		bdput(whole);
 	return 0;
 
  out_clear:
 	disk_put_part(bdev->bd_part);
 	bdev->bd_disk = NULL;
 	bdev->bd_part = NULL;
-	if (bdev != bdev->bd_contains)
-		__blkdev_put(bdev->bd_contains, mode, 1);
 	bdev->bd_contains = NULL;
- out_unlock_bdev:
-	if (claiming)
-		bd_abort_claiming(bdev, claiming, holder);
-	mutex_unlock(&bdev->bd_mutex);
-	disk_unblock_events(disk);
- out_put_whole:
- 	if (whole)
-		bdput(whole);
- out_put_disk:
-	put_disk_and_module(disk);
-	if (need_restart)
-		goto restart;
- out:
 	return ret;
 }
 
@@ -1589,7 +1516,12 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder,
  */
 static int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder)
 {
-	int ret, perm = 0;
+	struct block_device *claiming;
+	bool unblock_events = true;
+	struct gendisk *disk;
+	int perm = 0;
+	int partno;
+	int ret;
 
 	if (mode & FMODE_READ)
 		perm |= MAY_READ;
@@ -1599,13 +1531,67 @@ static int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder)
 	if (ret)
 		goto bdput;
 
-	ret =__blkdev_get(bdev, mode, holder, 0);
-	if (ret)
+	/*
+	 * If we lost a race with 'disk' being deleted, try again.  See md.c.
+	 */
+retry:
+	ret = -ENXIO;
+	disk = bdev_get_gendisk(bdev, &partno);
+	if (!disk)
 		goto bdput;
-	return 0;
 
+	if (mode & FMODE_EXCL) {
+		WARN_ON_ONCE(!holder);
+	
+		ret = -ENOMEM;
+		claiming = bdget_disk(disk, 0);
+		if (!claiming)
+			goto put_disk;
+		ret = bd_prepare_to_claim(bdev, claiming, holder);
+		if (ret)
+			goto put_claiming;
+	}
+
+	disk_block_events(disk);
+
+	mutex_lock(&bdev->bd_mutex);
+	ret =__blkdev_get(bdev, disk, partno, mode);
+	if (!(mode & FMODE_EXCL)) {
+		; /* nothing to do here */
+	} else if (ret) {
+		bd_abort_claiming(bdev, claiming, holder);
+	} else {
+		bd_finish_claiming(bdev, claiming, holder);
+
+		/*
+		 * Block event polling for write claims if requested.  Any write
+		 * holder makes the write_holder state stick until all are
+		 * released.  This is good enough and tracking individual
+		 * writeable reference is too fragile given the way @mode is
+		 * used in blkdev_get/put().
+		 */
+		if ((mode & FMODE_WRITE) && !bdev->bd_write_holder &&
+		    (disk->flags & GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE)) {
+			bdev->bd_write_holder = true;
+			unblock_events = false;
+		}
+	}
+	mutex_unlock(&bdev->bd_mutex);
+
+	if (unblock_events)
+		disk_unblock_events(disk);
+
+put_claiming:
+	if (mode & FMODE_EXCL)
+		bdput(claiming);
+put_disk:
+	if (ret)
+		put_disk_and_module(disk);
+	if (ret == -ERESTARTSYS)
+		goto retry;
 bdput:
-	bdput(bdev);
+	if (ret)
+		bdput(bdev);
 	return ret;
 }
 
@@ -1753,8 +1739,6 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
 		if (bdev_is_partition(bdev))
 			victim = bdev->bd_contains;
 		bdev->bd_contains = NULL;
-
-		put_disk_and_module(disk);
 	} else {
 		if (!bdev_is_partition(bdev) && disk->fops->release)
 			disk->fops->release(disk, mode);
@@ -1767,6 +1751,8 @@ static void __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part)
 
 void blkdev_put(struct block_device *bdev, fmode_t mode)
 {
+	struct gendisk *disk = bdev->bd_disk;
+
 	mutex_lock(&bdev->bd_mutex);
 
 	if (mode & FMODE_EXCL) {
@@ -1795,7 +1781,7 @@ void blkdev_put(struct block_device *bdev, fmode_t mode)
 		 * unblock evpoll if it was a write holder.
 		 */
 		if (bdev_free && bdev->bd_write_holder) {
-			disk_unblock_events(bdev->bd_disk);
+			disk_unblock_events(disk);
 			bdev->bd_write_holder = false;
 		}
 	}
@@ -1805,11 +1791,12 @@ void blkdev_put(struct block_device *bdev, fmode_t mode)
 	 * event.  This is to ensure detection of media removal commanded
 	 * from userland - e.g. eject(1).
 	 */
-	disk_flush_events(bdev->bd_disk, DISK_EVENT_MEDIA_CHANGE);
+	disk_flush_events(disk, DISK_EVENT_MEDIA_CHANGE);
 
 	mutex_unlock(&bdev->bd_mutex);
 
 	__blkdev_put(bdev, mode, 0);
+	put_disk_and_module(disk);
 }
 EXPORT_SYMBOL(blkdev_put);