On Thu, Oct 14, 2021 at 08:13:59AM -0500, Dave Kleikamp wrote: > On 10/14/21 4:32AM, Anton Altaparmakov wrote: > > Hi Christoph, > > > > > On 14 Oct 2021, at 07:28, Christoph Hellwig <hch@xxxxxx> wrote: > > > > > > On Wed, Oct 13, 2021 at 07:10:13AM +0200, Christoph Hellwig wrote: > > > > I wondered about adding a helper for looking at the size in byte units > > > > to avoid the SECTOR_SHIFT shifts in various places. But given that > > > > I could not come up with a good name and block devices fundamentally > > > > work in sector size granularity I decided against that. > > > > > > So it seems like the biggest review feedback is that we should have > > > such a helper. I think the bdev_size name is the worst as size does > > > not imply a particular unit. bdev_nr_bytes is a little better but I'm > > > not too happy. Any other suggestions or strong opinions? > > > > bdev_byte_size() would seem to address your concerns? > > > > bdev_nr_bytes() would work though - it is analogous to bdev_nr_sectors() after all. > > > > No strong opinion here but I do agree with you that bdev_size() is a bad choice for sure. It is bound to cause bugs down the line when people forget what unit it is in. > > I don't really mind bdev_size since it's analogous to i_size, but > bdev_nr_bytes seems good to me. I much prefer bdev_nr_bytes(), as "size" has no units. -- Kees Cook
