On Wed, Jun 29, 2022 at 04:08:29PM +0900, Damien Le Moal wrote: > On 6/29/22 15:20, Christoph Hellwig wrote: > > Independent access ranges only matter for file system I/O and are only > > valid with a registered gendisk, so move them there. > > Would this potentially affect the use of ranges in DM ? E.g. exposing a > dm-linear device targets as ranges. I do not think so but I did not check > the details. Device mapper only ever does file system I/O. Passthrough I/O must be initiated by the actual driver like scsi or nvme.