----- Ursprüngliche Mail ----- > Von: "hch" <hch@xxxxxx> > Yes. So the code needs to stop using sg_virt to work on highmem > setups and do the equivalent of scsi_kmap_atomic_sg. Best way > forward is probably to move scsi_kmap_atomic_sg to lib/scatterlist.c > (and also convert it to kmap_local instead of kmap_atomic while you're > at it) and then use that in ubiblock Will do so! So far I managed to get UBIblock work with scsi_kmap_atomic_sg(). Sadly now with kmap'ed memory a bounce buffer is needed since IO in UBI/MTD can sleep. Is there a strong reason why scsi_kmap_atomic_sg() needs IRQs disabled? Thanks, //richard