[PATCH 2/8] drm/shmem: switch shmem helper to &drm_gem_object_funcs.mmap
kraxel at redhat.com
Tue Sep 17 08:14:48 UTC 2019
> > - /* VM_PFNMAP was set by drm_gem_mmap() */
> > - vma->vm_flags &= ~VM_PFNMAP;
> > - vma->vm_flags |= VM_MIXEDMAP;
> > + vma->vm_flags |= (VM_MIXEDMAP|VM_DONTEXPAND);
> I'm finding this a bit hard to follow - but I think here we've lost
> VM_IO and VM_DONTDUMP which used to be set by drm_gem_mmap().
Yep. Intentional, but I think I better split that off to a separate
patch with a commit message explaining things.
> Also it looks like nothing is fiddling vma->vm_page_prot anymore.
Oops, that one was not intentional. Will fix.
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