On Thu, Oct 08, 2020 at 12:49:54AM -0700, Dan Williams wrote: > > This is what got me thinking maybe this needs to be a bit bigger > > generic infrastructure - eg enter this scheme from fops mmap and > > everything else is in mm/user_iomem.c > > It still requires every file that can map physical memory to have its > ->open fop do
Common infrastructure would have to create a dummy struct file at mmap time with the global inode and attach that to the VMA. Jason
