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authorMike Christie <michael.christie@oracle.com>2025-10-20 10:38:20 +0000
committerMartin K. Petersen <martin.petersen@oracle.com>2025-11-02 21:40:02 -0500
commit8e62d8f4b159ae80b4db5b5e46db0c5fec58c4a2 (patch)
tree095c5317c0b24960c03fd89356dd9d70d81706fe /drivers/target
parent2d9668883bba31b206f9b02bfc8db1fcb4ca6079 (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.c5
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;