8 Oct
2020
8 Oct
'20
12:41 p.m.
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