So did we settle on the new mmap_validate vs adding a new argument
to ->mmap for real now? I have to say I'd much prefer passing an
additional argument instead, but if higher powers rule that out
this version is ok.
> diff --git a/include/linux/fs.h b/include/linux/fs.h
> index 13dab191a23e..5aee97d64cae 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -1701,6 +1701,8 @@ struct file_operations {
> long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
> long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
> int (*mmap) (struct file *, struct vm_area_struct *);
> + int (*mmap_validate) (struct file *, struct vm_area_struct *,
> + unsigned long);
Can we make this return a bool for ok vs not ok? That way we only
need to have the error code discussion in one place instead of every
file system.
