Hi Martin, The SCSI target iblock backend uses regular writes to implement the SCSI WRITE SAME command. That is suboptimal for at least SCSI and NVMe SSDs. This patch series makes the iblock backend use REQ_OP_WRITE_SAME instead. Please consider these patches for inclusion in the upstream kernel. Thanks, Bart. Bart Van Assche (2): block: Add blkdev_submit_write_same() target/core: Use REQ_OP_WRITE_SAME to implement WRITE SAME block/blk-lib.c | 37 ++++++++++++++++++++++++++++- drivers/target/target_core_iblock.c | 17 +++++++++++++ include/linux/blkdev.h | 3 +++ 3 files changed, 56 insertions(+), 1 deletion(-) -- 2.22.0.410.gd8fdbe21b5-goog
