> From: Jason Gunthorpe <jgg@xxxxxxxxxx> > Sent: Thursday, August 10, 2023 12:44 AM > > On Tue, Aug 08, 2023 at 08:35:09AM -0700, Yi Liu wrote: > > +static int iommufd_zero_fill_user(void __user *ptr, size_t bytes) > > +{ > > + int index = 0; > > + > > + for (; index < bytes; index++) { > > + if (put_user(0, (uint8_t __user *)(ptr + index))) > > + return -EFAULT; > > + } > > I've recently learned this routine is spelled 'clear_user()' I see. Will replace with it. Regards, Yi Liu