Hi Martin, This patch series increases IOPS by 5% on my test setup in a single-threaded test with queue depth 1 on top of the scsi_debug driver. Please consider this patch series for kernel v5.16. Thanks, Bart. Bart Van Assche (84): scsi: core: Use a member variable to track the SCSI command submitter scsi: core: Rename scsi_mq_done() into scsi_done() and export it scsi: core: Call scsi_done directly ata: Call scsi_done() directly firewire: sbp2: Call scsi_done() directly ib_srp: Call scsi_done() directly message: fusion: Call scsi_done() directly zfcp_scsi: Call scsi_done() directly 3w-9xxx: Call scsi_done() directly 3w-sas: Call scsi_done() directly 3w-xxxx: Call scsi_done() directly 53c700: Call scsi_done() directly BusLogic: Call scsi_done() directly NCR5380: Call scsi_done() directly a100u2w: Call scsi_done() directly aacraid: Introduce aac_scsi_done() aacraid: Call scsi_done() directly acornscsi: Call scsi_done() directly advansys: Call scsi_done() directly aha152x: Call scsi_done() directly aha1542: Call scsi_done() directly aic7xxx: Call scsi_done() directly arcmsr: Call scsi_done() directly atp870u: Call scsi_done() directly bfa: Call scsi_done() directly bnx2fc: Call scsi_done() directly csiostor: Call scsi_done() directly cxlflash: Call scsi_done() directly dc395x: Call scsi_done() directly dpt_i2o: Call scsi_done() directly esas2r: Call scsi_done() directly esp_scsi: Call scsi_done() directly fas216: Call scsi_done() directly fdomain: Call scsi_done() directly fnic: Call scsi_done() directly hpsa: Call scsi_done() directly hptiop: Call scsi_done() directly ibmvscsi: Call scsi_done() directly imm: Call scsi_done() directly initio: Call scsi_done() directly ipr: Call scsi_done() directly ips: Call scsi_done() directly libfc: Call scsi_done() directly libiscsi: Call scsi_done() directly libsas: Call scsi_done() directly lpfc: Call scsi_done() directly mac53c94: Call scsi_done() directly megaraid: Call scsi_done() directly megaraid: Call scsi_done() directly mesh: Call scsi_done() directly mpi3mr: Call scsi_done() directly mpt3sas: Call scsi_done() directly mvumi: Call scsi_done() directly myrb: Call scsi_done() directly myrs: Call scsi_done() directly ncr53c8xx: Call scsi_done() directly nsp32: Call scsi_done() directly pcmcia: Call scsi_done() directly pmcraid: Call scsi_done() directly ppa: Call scsi_done() directly ps3rom: Call scsi_done() directly qedf: Call scsi_done() directly qla1280: Call scsi_done() directly qla2xxx: Call scsi_done() directly qla4xxx: Call scsi_done() directly qlogicfas408: Call scsi_done() directly qlogicpti: Call scsi_done() directly scsi_debug: Call scsi_done() directly smartpqi: Call scsi_done() directly snic: Call scsi_done() directly stex: Call scsi_done() directly storvsc_drv: Call scsi_done() directly sym53c8xx_2: Call scsi_done() directly ufs: Call scsi_done() directly virtio_scsi: Call scsi_done() directly vmw_pvscsi: Call scsi_done() directly wd33c93: Call scsi_done() directly wd719x: Call scsi_done() directly xen-scsifront: Call scsi_done() directly staging: rts5208: Call scsi_done() directly staging: unisys: visorhba: Call scsi_done() directly target/tcm_loop: Call scsi_done() directly usb: Call scsi_done() directly scsi_lib: Call scsi_done() directly drivers/ata/libata-sata.c | 2 +- drivers/ata/libata-scsi.c | 14 +-- drivers/firewire/sbp2.c | 2 +- drivers/infiniband/ulp/srp/ib_srp.c | 8 +- drivers/message/fusion/mptfc.c | 6 +- drivers/message/fusion/mptsas.c | 2 +- drivers/message/fusion/mptscsih.c | 10 +- drivers/message/fusion/mptspi.c | 4 +- drivers/s390/scsi/zfcp_fsf.c | 2 +- drivers/s390/scsi/zfcp_scsi.c | 4 +- drivers/scsi/3w-9xxx.c | 7 +- drivers/scsi/3w-sas.c | 7 +- drivers/scsi/3w-xxxx.c | 13 +- drivers/scsi/53c700.c | 5 +- drivers/scsi/BusLogic.c | 9 +- drivers/scsi/NCR5380.c | 12 +- drivers/scsi/a100u2w.c | 3 +- drivers/scsi/aacraid/aachba.c | 53 ++++---- drivers/scsi/advansys.c | 3 +- drivers/scsi/aha152x.c | 27 ++-- drivers/scsi/aha1542.c | 10 +- drivers/scsi/aic7xxx/aic79xx_osm.c | 3 +- drivers/scsi/aic7xxx/aic7xxx_osm.c | 3 +- drivers/scsi/arcmsr/arcmsr_hba.c | 17 ++- drivers/scsi/arm/acornscsi.c | 6 +- drivers/scsi/arm/fas216.c | 13 +- drivers/scsi/atp870u.c | 13 +- drivers/scsi/bfa/bfad_im.c | 8 +- drivers/scsi/bnx2fc/bnx2fc_io.c | 8 +- drivers/scsi/csiostor/csio_scsi.c | 8 +- drivers/scsi/cxlflash/main.c | 6 +- drivers/scsi/dc395x.c | 8 +- drivers/scsi/dpt_i2o.c | 11 +- drivers/scsi/esas2r/esas2r_main.c | 8 +- drivers/scsi/esp_scsi.c | 10 +- drivers/scsi/fdomain.c | 2 +- drivers/scsi/fnic/fnic_scsi.c | 119 ++++++++---------- drivers/scsi/hosts.c | 2 +- drivers/scsi/hpsa.c | 12 +- drivers/scsi/hptiop.c | 7 +- drivers/scsi/ibmvscsi/ibmvfc.c | 8 +- drivers/scsi/imm.c | 3 +- drivers/scsi/initio.c | 4 +- drivers/scsi/ipr.c | 10 +- drivers/scsi/ips.c | 28 ++--- drivers/scsi/libfc/fc_fcp.c | 6 +- drivers/scsi/libiscsi.c | 4 +- drivers/scsi/libsas/sas_scsi_host.c | 4 +- drivers/scsi/lpfc/lpfc_scsi.c | 8 +- drivers/scsi/mac53c94.c | 3 +- drivers/scsi/megaraid.c | 21 ++-- drivers/scsi/megaraid/megaraid_mbox.c | 9 +- drivers/scsi/megaraid/megaraid_sas_base.c | 16 +-- drivers/scsi/megaraid/megaraid_sas_fusion.c | 6 +- drivers/scsi/mesh.c | 16 +-- drivers/scsi/mpi3mr/mpi3mr_os.c | 26 ++-- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 18 +-- drivers/scsi/mvumi.c | 4 +- drivers/scsi/myrb.c | 32 ++--- drivers/scsi/myrs.c | 10 +- drivers/scsi/ncr53c8xx.c | 3 +- drivers/scsi/nsp32.c | 3 +- drivers/scsi/pcmcia/nsp_cs.c | 4 +- drivers/scsi/pcmcia/sym53c500_cs.c | 3 +- drivers/scsi/pmcraid.c | 11 +- drivers/scsi/ppa.c | 3 +- drivers/scsi/ps3rom.c | 5 +- drivers/scsi/qedf/qedf_io.c | 19 +-- drivers/scsi/qla1280.c | 5 +- drivers/scsi/qla2xxx/qla_os.c | 8 +- drivers/scsi/qla4xxx/ql4_os.c | 4 +- drivers/scsi/qlogicfas408.c | 3 +- drivers/scsi/qlogicpti.c | 4 +- drivers/scsi/scsi_debug.c | 8 +- drivers/scsi/scsi_error.c | 18 ++- drivers/scsi/scsi_lib.c | 15 ++- drivers/scsi/scsi_priv.h | 1 + drivers/scsi/smartpqi/smartpqi_init.c | 2 +- drivers/scsi/snic/snic_scsi.c | 33 +++-- drivers/scsi/stex.c | 6 +- drivers/scsi/storvsc_drv.c | 4 +- drivers/scsi/sym53c8xx_2/sym_glue.c | 3 +- drivers/scsi/ufs/ufshcd.c | 6 +- drivers/scsi/virtio_scsi.c | 7 +- drivers/scsi/vmw_pvscsi.c | 7 +- drivers/scsi/wd33c93.c | 14 +-- drivers/scsi/wd719x.c | 4 +- drivers/scsi/xen-scsifront.c | 4 +- drivers/staging/rts5208/rtsx.c | 5 +- .../staging/unisys/visorhba/visorhba_main.c | 14 +-- drivers/target/loopback/tcm_loop.c | 4 +- drivers/usb/storage/scsiglue.c | 1 - drivers/usb/storage/uas.c | 10 +- drivers/usb/storage/usb.c | 4 +- include/scsi/scsi_cmnd.h | 13 +- include/scsi/scsi_host.h | 2 +- 96 files changed, 436 insertions(+), 527 deletions(-)