[PATCH v2 0/4] scsi: scsi_debug: fix zoned write validation

[Niklas Cassel <cassel@kernel.org>]

This series fixes scsi_debug with regards to writes to a ZBC drive.

The series is based on 7.4/scsi-staging rather than 7.3/scsi-fixes (as
Damien suggested on v1) to avoid a build warning that would have happened
if this series was simply merged with linux-next (7.4/scsi-staging):

  error: too many arguments to function 'mk_sense_buffer'

Tested on a zoned scsi_debug device with 512 byte logical blocks and a
4096 byte physical block; the notes below each patch describe what was
observed before and after it.

Changes since v1:
- Based on 7.4/scsi-staging instead of 7.3/scsi-fixes, with patch 2
  using the combined sense code introduced there.
- Added patch 1, so that none of the write paths advance the write
  pointer when do_device_access() did not write all of the data.
- Patch 2 is unchanged, and has picked up Damien's Reviewed-by.
- Added patch 3, which marks the region that WRITE ATOMIC (16) wrote in
  the logical block provisioning map.
- Patch 4 advances the write pointer only when all of the data was
  written.

Niklas Cassel (4):
  scsi: scsi_debug: Do not advance the write pointer of a failed write
  scsi: scsi_debug: Enforce physical block alignment of zoned writes
  scsi: scsi_debug: Map the region written by WRITE ATOMIC (16)
  scsi: scsi_debug: Validate zone access for WRITE ATOMIC (16)

 drivers/scsi/scsi_debug.c | 38 ++++++++++++++++++++++++++++++++++----
 1 file changed, 34 insertions(+), 4 deletions(-)


base-commit: c3cff7fac01638ab58e85fe7df41a04fa25c5bae
-- 
2.55.0