On Mon, Sep 14, 2020 at 04:53:25PM -0700, Ralph Campbell wrote: > Since set_page_refcounted() is defined in mm_interal.h I would have to > move the definition to someplace like page_ref.h or have the drivers > cal init_page_count() or set_page_count() since get_page() calls > VM_BUG_ON_PAGE() if refcount == 0. > I'll move set_page_refcounted() since that is what the page allocator > uses and seems named for the purpose. I don't think any of the three ->page_free instances even cares about the page refcount.
