On Mon, Mar 30, 2020 at 10:06:41AM +0200, Martijn Coenen wrote: > Hi Ming, > > On Mon, Mar 30, 2020 at 3:00 AM Ming Lei <ming.lei@xxxxxxxxxx> wrote: > > The new ioctl LOOP_SET_FD_WITH_OFFSET looks not generic enough, could > > you consider to add one ioctl LOOP_SET_FD_AND_STATUS to cover both > > SET_FD and SET_STATUS so that using two ioctl() to setup loop can become > > deprecated finally? > > I originally started out doing that. However, it is a significantly > larger refactoring of the loop driver, and it makes things like error > handling more complex. I thought configuring loop with an offset is > the most common case. But if there's a preference to do an ioctl that > takes the full status, I can work on that. I think the full blown set fd an status would seem a lot more useful, or even better a LOOP_CTL_ADD variant that sets up everything important on the character device so that we avoid the half set up block devices entirely.
