linux-kernel - [PATCH v3 0/7] scsi: target: Add WRITE_ATOMIC

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Message-ID: <20251020103820.2917593-1-john.g.garry@oracle.com>
Date: Mon, 20 Oct 2025 10:38:13 +0000
From: John Garry <john.g.garry@...cle.com>
To: martin.petersen@...cle.com
Cc: target-devel@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-scsi@...r.kernel.org, michael.christie@...cle.com,
        John Garry <john.g.garry@...cle.com>
Subject: [PATCH v3 0/7] scsi: target: Add WRITE_ATOMIC_16 support

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 v2:
- Fix 32b build error

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      | 51 +++++++++++++++++++++++++++
 drivers/target/target_core_spc.c      | 49 +++++++++++++++++++++----
 include/target/target_core_backend.h  |  6 ++--
 include/target/target_core_base.h     |  6 ++++
 8 files changed, 148 insertions(+), 15 deletions(-)

-- 
2.43.5