On Mon, Sep 04, 2017 at 11:17:33PM +0200, Stephan Müller wrote: > Hi Greg, > > > Nope, this broke the build, sorry. If you want it in 4.4-stable, please > > provide a backported patch. > > > The issue is the missing page_ref_count function which used to be > atomic_read(&page->_count). > > I am not fully sure how to properly provide a patch for old kernels. Below > is a manually created patch that compiles and has the same logic. Please > let me know if that patch is not suitable. That works great, thanks. > Note, this patch is only for 4.4 and earlier. This doesn't apply to 3.18-stable, is it needed there? thanks, greg k-h