Hi Christoph, Thanks a lot for your reply. I will test your patches tomorrow. Cheers, Christian Sent from my iPhone > On 12. Dec 2018, at 15:15, Christoph Hellwig <hch@xxxxxx> wrote: > > Thanks for bisecting. I've spent some time going over the conversion > but can't really pinpoint it. I have three little patches that switch > parts of the code to the generic version. This is on top of the > last good commmit (977706f9755d2d697aa6f45b4f9f0e07516efeda). > > Can you check with whіch one things stop working? > > > <0001-get_required_mask.patch> > <0002-swiotlb-dma_supported.patch> > <0003-nommu-dma_supported.patch> > <0004-alloc-free.patch>