This is a reposting of Mike's atomic writes support for the SCSI target.

Again, we are now only supporting target_core_iblock. It's implemented
similar to UNMAP where we do not do any emulation and instead pass the
operation to the block layer.

Changes since v1:
- Don't make atomic alignment configurable
- Drop atomic_supported configfs entry
- reformatting
- fix lba size in sbc_check_atomic()
- fix return code from sbc_check_atomic()

Mike Christie (7):
  scsi: target: Rename target_configure_unmap_from_queue
  scsi: target: Add atomic se_device fields
  scsi: target: Add helper to setup atomic values from block_device
  scsi: target: Add WRITE_ATOMIC_16 handler
  scsi: target: Report atomic values in INQUIRY
  scsi: target: Add WRITE_ATOMIC_16 support to RSOC
  scsi: target: Add atomic support to target_core_iblock

 drivers/target/target_core_configfs.c | 15 ++++++++
 drivers/target/target_core_device.c   | 23 +++++++++++--
 drivers/target/target_core_file.c     |  4 +--
 drivers/target/target_core_iblock.c   |  9 +++--
 drivers/target/target_core_sbc.c      | 49 +++++++++++++++++++++++++++
 drivers/target/target_core_spc.c      | 49 +++++++++++++++++++++++----
 include/target/target_core_backend.h  |  6 ++--
 include/target/target_core_base.h     |  6 ++++
 8 files changed, 146 insertions(+), 15 deletions(-)

-- 
2.43.5