On Sun, Mar 06, 2022 at 11:48:26PM -0800, Christoph Hellwig wrote: > On Sun, Mar 06, 2022 at 11:33:02AM +0000, Matthew Wilcox wrote: > > On Sun, Mar 06, 2022 at 07:32:04AM +0200, Jarkko Sakkinen wrote: > > > For device memory (aka VM_IO | VM_PFNMAP) MAP_POPULATE does nothing. Allow > > > to use that for initializing the device memory by providing a new callback > > > f_ops->populate() for the purpose. > > > > As I said, NAK. > > Agreed. This is an amazingly bad interface. So what would you suggest to sort out the issue? I'm happy to go with ioctl if nothing else is acceptable. BR, Jarkko
