1 files changed, 6 insertions, 26 deletions

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 7bf4686af774..ab23bbc467e7 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -273,19 +273,6 @@ static void __loop_update_dio(struct loop_device *lo, bool dio)
 }
 
 /**
- * loop_validate_block_size() - validates the passed in block size
- * @bsize: size to validate
- */
-static int
-loop_validate_block_size(unsigned short bsize)
-{
-	if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
  * loop_set_size() - sets device size and notifies userspace
  * @lo: struct loop_device to set the size for
  * @size: new size of the loop device
@@ -1236,7 +1223,7 @@ static int loop_configure(struct loop_device *lo, fmode_t mode,
 	}
 
 	if (config->block_size) {
-		error = loop_validate_block_size(config->block_size);
+		error = blk_validate_block_size(config->block_size);
 		if (error)
 			goto out_unlock;
 	}
@@ -1329,7 +1316,6 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
 {
 	struct file *filp = NULL;
 	gfp_t gfp = lo->old_gfp_mask;
-	struct block_device *bdev = lo->lo_device;
 	int err = 0;
 	bool partscan = false;
 	int lo_number;
@@ -1395,22 +1381,16 @@ static int __loop_clr_fd(struct loop_device *lo, bool release)
 	blk_queue_logical_block_size(lo->lo_queue, 512);
 	blk_queue_physical_block_size(lo->lo_queue, 512);
 	blk_queue_io_min(lo->lo_queue, 512);
-	if (bdev) {
-		invalidate_bdev(bdev);
-		bdev->bd_inode->i_mapping->wb_err = 0;
-	}
-	set_capacity(lo->lo_disk, 0);
+	invalidate_disk(lo->lo_disk);
 	loop_sysfs_exit(lo);
-	if (bdev) {
-		/* let user-space know about this change */
-		kobject_uevent(&disk_to_dev(bdev->bd_disk)->kobj, KOBJ_CHANGE);
-	}
+	/* let user-space know about this change */
+	kobject_uevent(&disk_to_dev(lo->lo_disk)->kobj, KOBJ_CHANGE);
 	mapping_set_gfp_mask(filp->f_mapping, gfp);
 	/* This is safe: open() is still holding a reference. */
 	module_put(THIS_MODULE);
 	blk_mq_unfreeze_queue(lo->lo_queue);
 
-	partscan = lo->lo_flags & LO_FLAGS_PARTSCAN && bdev;
+	partscan = lo->lo_flags & LO_FLAGS_PARTSCAN;
 	lo_number = lo->lo_number;
 	disk_force_media_change(lo->lo_disk, DISK_EVENT_MEDIA_CHANGE);
 out_unlock:
@@ -1759,7 +1739,7 @@ static int loop_set_block_size(struct loop_device *lo, unsigned long arg)
 	if (lo->lo_state != Lo_bound)
 		return -ENXIO;
 
-	err = loop_validate_block_size(arg);
+	err = blk_validate_block_size(arg);
 	if (err)
 		return err;