On 06/14/2017 02:37 PM, Christoph Hellwig wrote: > Btw, I think these could also easily map to DSM field in the NVMe > write command, except that these unfortunately mix in read information > as well. But that's the problem, they are read/write mixed flags. I'd much rather keep them separate. If some application finds it useful to specify read access patterns, we should have separate flags for those imho. -- Jens Axboe