On Sat, Feb 22, 2025 at 08:44:51PM +0800, Ming Lei wrote: > IMO, it is fine to read it lockless without READ_ONCE/WRITE_ONCE because > disk->nr_zones is defined as 'unsigned int', which won't return garbage > value anytime. > > But I don't object if you want to change to READ_ONCE/WRITE_ONCE. It changes every time the disk capacity changes. And on the (uncommon) reformats. So the best locking would be the same as for the disk capacity.
