diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 78c47c4..85de673 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1036,6 +1036,8 @@
 	memset(lo->lo_crypt_name, 0, LO_NAME_SIZE);
 	memset(lo->lo_file_name, 0, LO_NAME_SIZE);
 	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) {
 		bdput(bdev);
 		invalidate_bdev(bdev);
@@ -1330,6 +1332,8 @@
 	blk_mq_freeze_queue(lo->lo_queue);
 
 	blk_queue_logical_block_size(lo->lo_queue, arg);
+	blk_queue_physical_block_size(lo->lo_queue, arg);
+	blk_queue_io_min(lo->lo_queue, arg);
 	loop_update_dio(lo);
 
 	blk_mq_unfreeze_queue(lo->lo_queue);
@@ -1777,8 +1781,6 @@
 	}
 	lo->lo_queue->queuedata = lo;
 
-	blk_queue_physical_block_size(lo->lo_queue, PAGE_SIZE);
-
 	blk_queue_max_hw_sectors(lo->lo_queue, BLK_DEF_MAX_SECTORS);
 
 	/*