diff options
| author | Mike Christie <michael.christie@oracle.com> | 2025-10-20 10:38:20 +0000 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-11-02 21:40:02 -0500 |
| commit | 8e62d8f4b159ae80b4db5b5e46db0c5fec58c4a2 (patch) | |
| tree | 095c5317c0b24960c03fd89356dd9d70d81706fe /drivers/target | |
| parent | 2d9668883bba31b206f9b02bfc8db1fcb4ca6079 (diff) | |
scsi: target: Add atomic support to target_core_iblock
Make target_core_iblock use the LIO helper function to translate its
block_device atomic settings to LIO settings. If we then get a write
that LIO has indicated is atomic via the SCF_ATOMIC flag, we use the
REQ_ATOMIC flag to tell the block layer to perform an atomic write.
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: John Garry <john.g.garry@oracle.com>
Reviewed-by: John Garry <john.g.garry@oracle.com>
Link: https://patch.msgid.link/20251020103820.2917593-8-john.g.garry@oracle.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/target')
| -rw-r--r-- | drivers/target/target_core_iblock.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 281612b9830f..8ec7b534ad76 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -152,6 +152,8 @@ static int iblock_configure_device(struct se_device *dev) if (bdev_nonrot(bd)) dev->dev_attrib.is_nonrot = 1; + target_configure_write_atomic_from_bdev(&dev->dev_attrib, bd); + bi = bdev_get_integrity(bd); if (!bi) return 0; @@ -773,6 +775,9 @@ iblock_execute_rw(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, else if (!bdev_write_cache(ib_dev->ibd_bd)) opf |= REQ_FUA; } + + if (cmd->se_cmd_flags & SCF_ATOMIC) + opf |= REQ_ATOMIC; } else { opf = REQ_OP_READ; miter_dir = SG_MITER_FROM_SG; |