On 26/06/2020 10:03, Christoph Hellwig wrote: > - size = bdev->bd_block_size; > - if (!size) > - size = 1024; > - Why is this correct? block_size() only returns 'bdev->bd_block_size' but I cannot see where it's made sure bd_block_size is not 0. At least no calls to set_blocksize()