From: Mike Christie <[email protected]> Add a sbc ops callout for compare and write commands, so backends like rbd which support that commmand can execute it natively.
Signed-off-by: Mike Christie <[email protected]> --- drivers/target/target_core_sbc.c | 9 +++++++-- include/target/target_core_backend.h | 1 + 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index e318ddb..9a001e6 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -968,8 +968,13 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) cmd->t_task_lba = get_unaligned_be64(&cdb[2]); cmd->t_task_nolb = sectors; cmd->se_cmd_flags |= SCF_SCSI_DATA_CDB | SCF_COMPARE_AND_WRITE; - cmd->execute_cmd = sbc_compare_and_write; - cmd->transport_complete_callback = compare_and_write_callback; + if (ops->execute_compare_and_write) { + cmd->execute_cmd = ops->execute_compare_and_write; + } else { + cmd->execute_cmd = sbc_compare_and_write; + cmd->transport_complete_callback = + compare_and_write_callback; + } break; case READ_CAPACITY: size = READ_CAP_LEN; diff --git a/include/target/target_core_backend.h b/include/target/target_core_backend.h index 1e5c8f9..ec5a09f 100644 --- a/include/target/target_core_backend.h +++ b/include/target/target_core_backend.h @@ -51,6 +51,7 @@ struct sbc_ops { sense_reason_t (*execute_write_same)(struct se_cmd *cmd); sense_reason_t (*execute_unmap)(struct se_cmd *cmd, sector_t lba, sector_t nolb); + sense_reason_t (*execute_compare_and_write)(struct se_cmd *cmd); }; int transport_backend_register(const struct target_backend_ops *); -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
