On Sat, May 16, 2020 at 11:54:31AM +0800, Coly Li wrote: > For a zoned device, e.g. host managed SMR hard drive, REQ_OP_ZONE_RESET > is to reset the LBA of a zone's write pointer back to the start LBA of > this zone. After the write point is reset, all previously stored data > in this zone is invalid and unaccessible anymore. Therefore, this op > code changes on disk data, belongs to a WRITE request op code. > > Current REQ_OP_ZONE_RESET is defined as number 6, but the convention of > the op code is, READ requests are even numbers, and WRITE requests are > odd numbers. See how op_is_write defined, The convention is all about data transfer, and zone reset does not transfer any data.
