From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Greetings all, This series adds some follow up TPE/TPU emulation patches for TCM Core and IBLOCK + FILEIO -> Block Discard emulation. The first renames the current DEV_ATTRIB(dev)->emulate_tpe configfs attr to an explict signaling of UNMAP emulation support with DEV_ATTRIB(dev)->emulate_tpu. This was done because the meaning of TPE=1 will be changing in future SBC3 specs, and we need to support both TPU and TPWS for TCM/IBLOCK and TCM/FILEIO subsystem plugins. The second adds support for INQUIRY EVPD Thin Provisioning VPD (0xb2) emulation for IBLOCK + FILEIO backstores w/ blk_queue_discard()=1 following mkp's recommendation. The third adds support for filling in the proper max_unmap_lba_count, max_unmap_block_desc_count, unmap_granularity, and unmap_granularity_alignment from generic struct request_queue->limits values reported by the underlying SCSI (TPU/TPWS) and SATA (TRIM) HW accordingly. So far these patches have been tested with TCM_Loop -> TCM/IBLOCK -> scsi_debug backstores, and sg_vpd output has been included in the second and third patches for reference. Many, many thanks to Martin Petersen for answering questions wrt to TPE/TPU/TPWS -> Block Discard translation and EVPD 0xb2 THRESHOLD EXPONENT usage! Thanks mkp! Signed-off-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx> Nicholas Bellinger (3): tcm: Rename device attribute emulate_tpe to emulate_tpu tcm: Add Thin Provisioning VPD page emulation tcm/iblock,fileio: Fill in remaining Block Limits VPD from rq->limits drivers/target/target_core_configfs.c | 6 ++-- drivers/target/target_core_device.c | 8 +++--- drivers/target/target_core_file.c | 18 +++++++++++- drivers/target/target_core_iblock.c | 19 +++++++++++-- drivers/target/target_core_transport.c | 44 +++++++++++++++++++++++++++---- include/target/target_core_base.h | 2 +- include/target/target_core_device.h | 2 +- include/target/target_core_transport.h | 4 +- 8 files changed, 81 insertions(+), 22 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
