Christoph, > I am very much against that for the following reason: > > - the current REQ_OP_DISCARD is purely a hint, and implementations can > (and do) choose to ignore it > > - REQ_OP_WRITE_ZEROES is an actual data integrity operation with > everything that entails If you want to keep emphasis on the "integrity operation" instead of the provisioning aspect, would you expect REQ_ALLOCATE (which may or may not zero blocks) to be considered a deterministic operation or a non-deterministic one? Should this depend on whether the device guarantees zeroing when provisioning blocks or not? -- Martin K. Petersen Oracle Linux Engineering
