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alistair23-linux/drivers/scsi
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Johannes Thumshirn 5795eb4430 scsi: sd_zbc: emulate ZONE_APPEND commands 
Emulate ZONE_APPEND for SCSI disks using a regular WRITE(16) command
with a start LBA set to the target zone write pointer position.

In order to always know the write pointer position of a sequential write
zone, the write pointer of all zones is tracked using an array of 32bits
zone write pointer offset attached to the scsi disk structure. Each
entry of the array indicate a zone write pointer position relative to
the zone start sector. The write pointer offsets are maintained in sync
with the device as follows:
1) the write pointer offset of a zone is reset to 0 when a
   REQ_OP_ZONE_RESET command completes.
2) the write pointer offset of a zone is set to the zone size when a
   REQ_OP_ZONE_FINISH command completes.
3) the write pointer offset of a zone is incremented by the number of
   512B sectors written when a write, write same or a zone append
   command completes.
4) the write pointer offset of all zones is reset to 0 when a
   REQ_OP_ZONE_RESET_ALL command completes.

Since the block layer does not write lock zones for zone append
commands, to ensure a sequential ordering of the regular write commands
used for the emulation, the target zone of a zone append command is
locked when the function sd_zbc_prepare_zone_append() is called from
sd_setup_read_write_cmnd(). If the zone write lock cannot be obtained
(e.g. a zone append is in-flight or a regular write has already locked
the zone), the zone append command dispatching is delayed by returning
BLK_STS_ZONE_RESOURCE.

To avoid the need for write locking all zones for REQ_OP_ZONE_RESET_ALL
requests, use a spinlock to protect accesses and modifications of the
zone write pointer offsets. This spinlock is initialized from sd_probe()
using the new function sd_zbc_init().

Co-developed-by: Damien Le Moal <Damien.LeMoal@wdc.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-05-12 20:36:28 -06:00
..
aacraid SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
aic7xxx SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
aic94xx compat_ioctl: scsi: handle HDIO commands from drivers 2020-01-03 09:42:52 +01:00
arcmsr SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
arm scsi: Fix various misspellings of "connect" 2019-10-24 21:22:32 -04:00
be2iscsi scsi: be2iscsi: Use scnprintf() for avoiding potential buffer overflow 2020-03-17 13:36:09 -04:00
bfa scsi: bfa: Make restart_bfa static 2019-09-30 23:59:53 -04:00
bnx2fc scsi: bnx2fc: fix boolreturn.cocci warnings 2020-03-31 22:35:02 -04:00
bnx2i remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
csiostor SCSI misc on 20200129 2020-01-29 18:16:16 -08:00
cxgbi SCSI fixes on 20191227 2019-12-27 17:28:41 -08:00
cxlflash SCSI misc on 20191130 2019-12-02 13:37:02 -08:00
device_handler SCSI fixes on 20191101 2019-11-07 06:43:18 -07:00
dpt scsi: docs: convert dpti.txt to ReST 2020-03-11 23:07:59 -04:00
esas2r proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
fcoe SCSI misc on 20190919 2019-09-21 10:50:15 -07:00
fnic scsi: fnic: Use scnprintf() for avoiding potential buffer overflow 2020-03-17 13:36:10 -04:00
hisi_sas scsi: hisi_sas: Fix build error without SATA_HOST 2020-04-13 13:28:13 -04:00
ibmvscsi scsi: ibmvfc: Fix NULL return compiler warning 2020-03-11 23:07:57 -04:00
ibmvscsi_tgt scsi: ibmvscsi_tgt: remove set but not used variables 'iue' and 'sd' 2019-12-19 22:08:54 -05:00
isci SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
libfc SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
libsas ata: make SATA_PMP option selectable only if any SATA host driver is enabled 2020-03-26 10:28:17 -06:00
lpfc SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
megaraid SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
mpt3sas scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug 2020-03-31 22:02:37 -04:00
mvsas scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
pcmcia scsi: docs: convert NinjaSCSI.txt to ReST 2020-03-11 23:08:01 -04:00
pm8001 scsi: pm80xx: Introduce read and write length for IOCTL payload structure 2020-03-17 13:57:19 -04:00
qedf scsi: qedf: Use pci_get_dsn() 2020-03-05 17:36:24 -08:00
qedi scsi: qedi: Add PCI shutdown handler support 2020-03-26 22:38:54 -04:00
qla2xxx scsi: qla2xxx: Fix regression warnings 2020-04-13 13:58:18 -04:00
qla4xxx scsi: qla4xxx: Adjust indentation in qla4xxx_mem_free 2019-12-19 22:08:55 -05:00
smartpqi scsi: smartpqi: Use scnprintf() for avoiding potential buffer overflow 2020-03-17 13:36:13 -04:00
snic scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
sym53c8xx_2 scsi: sym53c8xx: fix typos in comments 2019-12-19 22:08:54 -05:00
ufs SCSI misc on 20200410 2020-04-10 12:21:11 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
3w-9xxx.c scsi: 3w-9xxx: fix calls to dma_set_mask_and_coherent() 2019-02-25 21:37:25 -05:00
3w-9xxx.h
3w-sas.c SCSI fixes on 20190302 2019-03-02 11:39:54 -08:00
3w-sas.h
3w-xxxx.c compat_ioctl: move more drivers to compat_ptr_ioctl 2019-10-23 17:23:44 +02:00
3w-xxxx.h scsi: 3w-xxx: fully convert to the generic DMA API 2018-10-17 21:58:51 -04:00
53c700.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
53c700.h scsi: 53c700: Fix spelling of 'NEGOTIATION' 2018-08-30 07:27:22 -04:00
53c700.scr
53c700_d.h_shipped
a100u2w.c cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
a100u2w.h
a2091.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
a2091.h
a3000.c scsi: Use pr_warn instead of pr_warning 2019-10-18 15:01:54 +02:00
a3000.h
a4000t.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
advansys.c scsi: advansys: Replace zero-length array with flexible-array member 2020-02-18 00:39:54 -05:00
aha152x.c scsi: docs: convert aha152x.txt to ReST 2020-03-11 23:07:58 -04:00
aha152x.h
aha1542.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
aha1542.h
aha1740.c scsi: aha1740: Fix an errro handling path in aha1740_probe() 2020-03-26 21:10:53 -04:00
aha1740.h
am53c974.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
atari_scsi.c scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE 2019-11-12 22:21:34 -05:00
atp870u.c scsi: core: Clean up SG_NONE 2019-11-12 22:21:35 -05:00
atp870u.h
BusLogic.c SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
BusLogic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 388 2019-06-05 17:37:11 +02:00
bvme6000_scsi.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ch.c scsi: ch: remove ch_mutex() 2020-02-24 14:54:25 -05:00
constants.c scsi: core: Add DID_ALLOC_FAILURE and DID_MEDIUM_ERROR to hostbyte_table 2020-04-01 22:03:04 -04:00
dc395x.c scsi: dc395x: remove dc395x_bios_param 2020-03-26 22:51:18 -04:00
dc395x.h
dmx3191d.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
dpt_i2o.c scsi: docs: convert dpti.txt to ReST 2020-03-11 23:07:59 -04:00
dpti.h scsi: docs: convert dpti.txt to ReST 2020-03-11 23:07:59 -04:00
esp_scsi.c scsi: esp_scsi: Add support for FSC chip 2019-12-19 22:08:51 -05:00
esp_scsi.h scsi: esp_scsi: Add support for FSC chip 2019-12-19 22:08:51 -05:00
fdomain.c scsi: fdomain: use BSTAT_{MSG|CMD|IO} in fdomain_work() 2019-07-30 12:17:28 -04:00
fdomain.h scsi: fdomain: Add register definitions 2019-06-18 19:46:22 -04:00
fdomain_isa.c scsi: fdomain_isa: use CFG1_IRQ_MASK 2019-07-30 12:18:24 -04:00
fdomain_pci.c scsi: fdomain: Resurrect driver - PCI support 2019-06-18 19:46:18 -04:00
FlashPoint.c scsi: FlashPoint: Remove unnecessary parentheses 2018-09-25 20:45:53 -04:00
g_NCR5380.c scsi: docs: convert g_NCR5380.txt to ReST 2020-03-11 23:08:00 -04:00
gdth.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 148 2019-05-30 11:25:18 -07:00
gdth.h scsi: gdth: remove ISA and EISA support 2019-01-08 21:58:35 -05:00
gdth_ioctl.h scsi: gdth: remove dead code under #ifdef GDTH_IOCTL_PROC 2019-01-08 21:58:35 -05:00
gdth_proc.c scsi: gdth: Use scnprintf() for avoiding potential buffer overflow 2020-03-17 13:36:10 -04:00
gdth_proc.h scsi: gdth: remove gdth_{alloc,free}_ioctl 2019-01-08 21:57:42 -05:00
gvp11.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
gvp11.h
hosts.c scsi: core: add scsi_host_busy_iter() 2020-02-28 20:54:52 -05:00
hpsa.c scsi: hpsa: correct race condition in offload enabled 2020-03-26 22:44:41 -04:00
hpsa.h scsi: hpsa: correct device resets 2019-06-18 19:46:18 -04:00
hpsa_cmd.h SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
hptiop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
hptiop.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
imm.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
imm.h
initio.c scsi: initio: make initio_state_7() static 2019-12-19 22:08:54 -05:00
initio.h
ipr.c SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
ipr.h SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
ips.c scsi: ips: make array 'options' static const, makes object smaller 2019-09-30 22:46:40 -04:00
ips.h scsi: ips: properly handle 64-bit DMA 2018-11-06 21:31:28 -05:00
iscsi_boot_sysfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 287 2019-06-05 17:36:37 +02:00
iscsi_tcp.c scsi: iscsi: Don't destroy session if there are outstanding connections 2020-01-15 22:48:34 -05:00
iscsi_tcp.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
jazz_esp.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
Kconfig SCSI misc on 20200402 2020-04-02 17:03:53 -07:00
lasi700.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
libiscsi.c scsi: libiscsi: Fix error count for active session 2020-03-26 22:48:58 -04:00
libiscsi_tcp.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
mac53c94.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mac53c94.h
mac_esp.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mac_scsi.c scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE 2019-11-12 22:21:34 -05:00
Makefile scsi: remove pointless $(MODVERDIR)/$(obj)/53c700.ver 2019-07-17 22:39:27 +09:00
megaraid.c scsi: simplify scsi_partsize 2020-03-24 07:57:07 -06:00
megaraid.h
mesh.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mesh.h
mvme16x_scsi.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
mvme147.c scsi: flip the default on use_clustering 2018-12-18 23:13:12 -05:00
mvme147.h
mvumi.c SCSI sg on 20190709 2019-07-11 15:17:41 -07:00
mvumi.h scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
myrb.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
myrb.h scsi: mylex: Use the correct style for SPDX License Identifier 2020-01-02 21:57:44 -05:00
myrs.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
myrs.h scsi: mylex: Use the correct style for SPDX License Identifier 2020-01-02 21:57:44 -05:00
ncr53c8xx.c scsi: docs: convert ncr53c8xx.txt to ReST 2020-03-11 23:08:01 -04:00
ncr53c8xx.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
NCR5380.c scsi: NCR5380: Add disconnect_mask module parameter 2019-11-19 21:37:34 -05:00
NCR5380.h Revert "scsi: ncr5380: Increase register polling limit" 2019-06-20 15:37:02 -04:00
nsp32.c scsi: Fix various misspellings of "connect" 2019-10-24 21:22:32 -04:00
nsp32.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
nsp32_debug.c
nsp32_io.h
pmcraid.c compat_ioctl: move more drivers to compat_ptr_ioctl 2019-10-23 17:23:44 +02:00
pmcraid.h scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
ppa.c scsi: ppa: use sg helper to iterate over scatterlist 2019-06-20 15:21:33 -04:00
ppa.h
ps3rom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 164 2019-05-30 11:26:38 -07:00
qla1280.c scsi: qla1280: Make checking for 64bit support consistent 2020-01-20 18:35:55 -05:00
qla1280.h scsi: qla1280: Fix dma firmware download, if dma address is 64bit 2020-01-15 23:09:11 -05:00
qlogicfas.c scsi: remove the use_clustering flag 2018-12-18 23:19:21 -05:00
qlogicfas408.c scsi: qlogicfas408: clean up a couple of indentation issues 2019-03-19 17:11:37 -04:00
qlogicfas408.h
qlogicpti.c scsi: qlogicpti: Mark expected switch fall-throughs 2019-08-07 21:32:53 -04:00
qlogicpti.h scsi: qlogicpti: Use of_node_name_eq for node name comparisons 2019-02-13 22:07:03 -05:00
raid_class.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 437 2019-06-05 17:37:17 +02:00
script_asm.pl treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
scsi.c scsi: core: Remove cmd_list functionality 2020-02-28 20:54:55 -05:00
scsi.h
scsi_common.c
scsi_debug.c block: move struct partition out of genhd.h 2020-03-24 07:57:08 -06:00
scsi_debugfs.c scsi: scsi_debugfs: Use for_each_set_bit to simplify code 2019-07-30 12:42:55 -04:00
scsi_debugfs.h scsi: core: add SPDX tags to scsi midlayer files missing licensing information 2019-05-21 06:16:21 -04:00
scsi_devinfo.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
scsi_dh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_error.c scsi: core: Remove cmd_list functionality 2020-02-28 20:54:55 -05:00
scsi_ioctl.c compat_ioctl: add scsi_compat_ioctl 2020-01-03 09:33:18 +01:00
scsi_lib.c block: Introduce REQ_OP_ZONE_APPEND 2020-05-12 20:36:28 -06:00
scsi_lib_dma.c
scsi_logging.c scsi: core: Log SCSI command age with errors 2019-09-30 23:07:16 -04:00
scsi_logging.h scsi: core: Fix a compiler warning triggered by the SCSI logging code 2019-12-19 22:08:54 -05:00
scsi_netlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_pm.c scsi: core: remove dummy q->dev check 2019-09-12 07:11:58 -06:00
scsi_priv.h scsi: core: Remove cmd_list functionality 2020-02-28 20:54:55 -05:00
scsi_proc.c proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
scsi_sas_internal.h
scsi_scan.c scsi: core: Remove cmd_list functionality 2020-02-28 20:54:55 -05:00
scsi_sysctl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 209 2019-05-30 11:29:53 -07:00
scsi_sysfs.c scsi: core: Use scnprintf() for avoiding potential buffer overflow 2020-03-17 13:36:12 -04:00
scsi_trace.c scsi: scsi_trace: Use get_unaligned_be24() 2020-03-16 22:08:36 -04:00
scsi_transport_api.h
scsi_transport_fc.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
scsi_transport_iscsi.c scsi: iscsi: Report unbind session event when the target has been removed 2020-03-31 21:39:58 -04:00
scsi_transport_sas.c scsi: scsi_transport_sas: Fix memory leak when removing devices 2019-11-21 21:12:39 -05:00
scsi_transport_spi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
scsi_transport_srp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 502 2019-06-19 17:09:56 +02:00
scsicam.c block: move struct partition out of genhd.h 2020-03-24 07:57:08 -06:00
sd.c scsi: sd_zbc: emulate ZONE_APPEND commands 2020-05-12 20:36:28 -06:00
sd.h scsi: sd_zbc: emulate ZONE_APPEND commands 2020-05-12 20:36:28 -06:00
sd_dif.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 410 2019-06-05 17:37:14 +02:00
sd_zbc.c scsi: sd_zbc: emulate ZONE_APPEND commands 2020-05-12 20:36:28 -06:00
sense_codes.h
ses.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
sg.c scsi: sg: add sg_remove_request in sg_common_write 2020-04-13 21:58:48 -04:00
sgiwd93.c scsi: remove the use_clustering flag 2018-12-18 23:19:21 -05:00
sim710.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
sni_53c710.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
sr.c block: add a cdrom_device_info pointer to struct gendisk 2020-05-04 10:13:42 -06:00
sr.h scsi: sr: get rid of sr global mutex 2020-02-24 15:01:57 -05:00
sr_ioctl.c
sr_vendor.c scsi: sr: remove references to BLK_DEV_SR_VENDOR, leave it enabled 2020-02-24 14:59:01 -05:00
st.c scsi: st: Use get_unaligned_be24() and sign_extend32() 2020-03-16 22:08:34 -04:00
st.h
st_options.h
stex.c scsi: Replace zero-length array with flexible-array member 2020-03-11 23:07:56 -04:00
storvsc_drv.c scsi: storvsc: Correctly set number of hardware queues for IDE disk 2020-01-15 23:02:24 -05:00
sun3_scsi.c scsi: atari_scsi: sun3_scsi: Set sg_tablesize to 1 instead of SG_NONE 2019-11-12 22:21:34 -05:00
sun3_scsi_vme.c
sun3x_esp.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
sun_esp.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
virtio_scsi.c scsi: core: remove .for_blk_mq 2020-02-10 22:46:55 -05:00
vmw_pvscsi.c scsi: vmw_pvscsi: Silence dma mapping errors 2019-12-19 22:42:44 -05:00
vmw_pvscsi.h
wd33c93.c scsi: wd33c93: Mark expected switch fall-through 2019-08-07 21:35:59 -04:00
wd33c93.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
wd719x.c SCSI misc on 20190709 2019-07-11 15:14:01 -07:00
wd719x.h scsi: wd719x: use per-command private data 2018-11-15 14:27:08 -05:00
xen-scsifront.c scsi: xen-scsifront: remove DISABLE_CLUSTERING 2018-12-18 23:13:12 -05:00
zalon.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
zorro7xx.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
zorro_esp.c scsi: zorro_esp: Restore devm_ioremap() alignment 2020-02-12 22:56:47 -05:00