On Tue, Aug 12, 2025 at 02:17:01PM +0900, Damien Le Moal wrote: > And indeed, that: > > /* size of the new backing store needs to be the same */ > if (get_loop_size(lo, file) != get_loop_size(lo, old_file)) > goto out_err; > > Will need some massaging. Why? get_loop_size just derives the first arguments to get_size from the passed in loop device in the same way the only other caller to get_size does. So we can just: 1) convert loop_set_status to use get_loop_size 2) Fold get_size into get_loop_size 3) Maye rename get_size to lo_calculate_size to have a descriptive name while we're touching it? 4) switch to vfs_getattr