redonkable/alistair23-linux
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alistair23-linux/drivers/scsi
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Hannes Reinecke 03197b61c5 scsi_dh_alua: Use workqueue for RTPG 
The current ALUA device_handler has two drawbacks:
- We're sending a 'SET TARGET PORT GROUP' command to every LUN,
  disregarding the fact that several LUNs might be in a port group
  and will be automatically switched whenever _any_ LUN within
  that port group receives the command.
- Whenever a LUN is in 'transitioning' mode we cannot block I/O
  to that LUN, instead the controller has to abort the command.
  This leads to increased traffic across the wire and heavy load
  on the controller during switchover.

With this patch the RTPG handling is moved to a per-portgroup
workqueue. This reduces the number of 'REPORT TARGET PORT GROUP'
and 'SET TARGET PORT GROUPS' sent to the controller as we're sending
them now per port group, and not per device as previously.
It also allows us to block I/O to any LUN / port group found to be
in 'transitioning' ALUA mode, as the workqueue item will be requeued
until the controller moves out of transitioning.

Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-02-23 21:27:02 -05:00
..
aacraid aacraid: Update driver version 2016-02-23 21:27:02 -05:00
aic7xxx aic7xxx: Fix queue depth handling 2016-02-23 21:27:02 -05:00
aic94xx scsi: Centralise ssp frame information units 2015-11-25 22:12:50 -05:00
arcmsr arcmsr: change driver version to v1.30.00.22-20151126 2015-11-30 18:51:20 -05:00
arm scsi: fas216: avoid fas216_log_setup for loadable module 2016-02-23 21:27:02 -05:00
be2iscsi be2iscsi: Fix memory leak in beiscsi_alloc_mem() 2016-02-23 21:27:02 -05:00
bfa bfa: deinline __bfa_trc() and __bfa_trc32() 2016-02-23 21:27:02 -05:00
bnx2fc bnx2fc: bnx2fc_eh_abort(): fix wrong return code. 2016-02-23 21:27:02 -05:00
bnx2i bnx2i: Fix call trace while device reset 2015-06-02 17:15:24 -07:00
csiostor scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
cxgbi cxgbi: Typo in MODULE_PARM_DESC 2016-01-08 12:51:04 -05:00
cxlflash cxlflash: Enable device id for future IBM CXL adapter 2016-01-06 20:58:29 -05:00
device_handler scsi_dh_alua: Use workqueue for RTPG 2016-02-23 21:27:02 -05:00
dpt
esas2r esas2r: Fix array overrun 2016-02-23 21:27:02 -05:00
fcoe fcoe: Use CHECKSUM_PARTIAL to indicate CRC offload 2015-12-15 16:49:58 -05:00
fnic scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
hisi_sas hisi_sas: update driver version to 1.2 2016-02-23 21:27:02 -05:00
ibmvscsi ibmvfc: byteswap scsi_id, wwpn, and node_name prior to logging 2016-02-23 21:27:02 -05:00
isci SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
libfc libfc: Use the correct function name in kernel-doc comment. 2015-11-09 17:15:52 -08:00
libsas Merge branch 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2015-03-24 17:08:29 -07:00
lpfc lpfc: fix missing zero termination in debugfs 2016-02-23 21:27:02 -05:00
megaraid megaraid_sas: Add an i/o barrier 2016-02-23 21:27:02 -05:00
mpt3sas mpt3sas: Free memory pools before retrying to allocate with different value. 2016-02-23 21:27:02 -05:00
mvsas Merge branch 'jejb-scsi' into misc 2016-01-07 15:51:13 -08:00
osd osd: fix signed char versus %02x issue 2015-12-10 13:14:56 -05:00
pcmcia scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
pm8001 SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
qla2xxx qla2xxx: Update driver version to 8.07.00.33-k 2016-02-23 21:27:02 -05:00
qla4xxx scsi: qla4xxx: shut up warning for rd_reg_indirect 2016-02-23 21:27:02 -05:00
snic SCSI misc on 20151113 2015-11-13 20:35:54 -08:00
sym53c8xx_2
ufs scsi: ufs: fix typo in comment 2016-02-23 21:27:02 -05:00
.gitignore
3w-9xxx.c 3w-9xxx: don't unmap bounce buffered commands 2015-10-07 10:24:48 -07:00
3w-9xxx.h 3w-9xxx: fix command completion race 2015-04-27 10:10:19 -07:00
3w-sas.c 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-sas.h 3w-sas: fix command completion race 2015-04-27 10:04:39 -07:00
3w-xxxx.c 3w-xxxx: Pass through compat mode ioctls 2016-01-08 12:51:03 -05:00
3w-xxxx.h 3w-xxxx: fix command completion race 2015-04-27 10:05:55 -07:00
53c700.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
53c700.h
53c700.scr
53c700_d.h_shipped
a100u2w.c scsi: a100u2w: trivial typo in printk 2015-08-07 15:03:42 +02:00
a100u2w.h
a2091.c
a2091.h
a3000.c
a3000.h
a4000t.c
advansys.c Merge branch 'mkp-fixes' into fixes 2015-12-03 09:32:33 -08:00
aha152x.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha152x.h
aha1542.c scsi: aha1542: avoid uninitialized variable warnings 2016-02-23 21:27:02 -05:00
aha1542.h aha1542: fix include guard and remove useless changelog 2015-04-09 18:08:31 -07:00
aha1740.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
aha1740.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
am53c974.c am53c974: Fix crash during modprobe 2015-04-17 10:13:56 -07:00
atari_NCR5380.c ncr5380: Cleanup whitespace and parentheses 2016-01-06 21:43:10 -05:00
atari_scsi.c atari_scsi, sun3_scsi: Remove global Scsi_Host pointer 2016-01-06 21:43:08 -05:00
atp870u.c atp870u: Introduce atp870_init() 2015-11-25 22:08:55 -05:00
atp870u.h atp870u: Remove scam_on from struct atp_unit 2015-11-25 22:08:52 -05:00
BusLogic.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
BusLogic.h
bvme6000_scsi.c
ch.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2015-04-14 09:50:27 -07:00
constants.c scsi: Conditionally compile in constants.c 2015-01-09 15:44:31 +01:00
dc395x.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
dc395x.h
dmx3191d.c ncr5380: Fix soft lockups 2016-01-06 21:43:09 -05:00
dpt_i2o.c dpt_i2o: fix build warning 2016-02-23 21:27:02 -05:00
dpti.h
dtc.c ncr5380: Fix soft lockups 2016-01-06 21:43:09 -05:00
dtc.h ncr5380: Fix and cleanup scsi_host_template initializers 2016-01-06 21:43:03 -05:00
eata.c
eata_generic.h
eata_pio.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
eata_pio.h
esp_scsi.c scsi: use host wide tags by default 2015-11-09 17:11:57 -08:00
esp_scsi.h
fdomain.c scsi: fdomain: drop fdomain_pci_tbl when built-in 2016-02-23 21:27:02 -05:00
fdomain.h
FlashPoint.c FlashPoint: fix build warning 2015-11-09 16:32:14 -08:00
g_NCR5380.c ncr5380: Add support for HP C2502 2016-01-06 21:43:13 -05:00
g_NCR5380.h ncr5380: Add support for HP C2502 2016-01-06 21:43:13 -05:00
g_NCR5380_mmio.c
gdth.c
gdth.h
gdth_ioctl.h
gdth_proc.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
gdth_proc.h
gvp11.c
gvp11.h
hosts.c scsi: Use ida for host number management 2016-02-23 21:27:02 -05:00
hpsa.c Merge branch 'jejb-scsi' into misc 2016-01-07 15:51:13 -08:00
hpsa.h hpsa: Change SAS transport devices to bus 0. 2016-01-06 15:10:35 -05:00
hpsa_cmd.h hpsa: Add box and bay information for enclosure devices 2016-01-06 15:10:36 -05:00
hptiop.c hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
hptiop.h hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer 2015-08-12 13:14:57 -07:00
imm.c imm: Use new parport device model 2016-01-08 13:08:15 -05:00
imm.h
in2000.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
in2000.h
initio.c SCSI: initio: remove duplicate module device table 2015-11-20 11:39:03 -05:00
initio.h
ipr.c Initial roundup of 4.5 merge window patches 2016-01-23 18:45:06 -08:00
ipr.h irq_poll: make blk-iopoll available outside the block layer 2015-12-11 11:52:24 -08:00
ips.c ips: remove pointless #warning 2015-06-02 17:24:54 -07:00
ips.h
iscsi_boot_sysfs.c
iscsi_tcp.c
iscsi_tcp.h
jazz_esp.c
Kconfig Initial roundup of 4.5 merge window patches 2016-01-23 18:45:06 -08:00
lasi700.c
libiscsi.c libiscsi: Fix iscsi_check_transport_timeouts possible infinite loop 2015-09-17 07:25:02 -07:00
libiscsi_tcp.c
mac53c94.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
mac53c94.h
mac_esp.c
mac_scsi.c ncr5380: Fix soft lockups 2016-01-06 21:43:09 -05:00
Makefile hisi_sas: Add initial bare main driver 2015-11-25 22:12:51 -05:00
megaraid.c megaraid : use dev_printk when possible 2015-08-26 07:23:04 -07:00
megaraid.h
mesh.c powerpc: Move Power Macintosh drivers to generic byteswappers 2015-03-23 14:29:40 +11:00
mesh.h
mvme16x_scsi.c
mvme147.c
mvme147.h
mvumi.c mvumi: 64bit value for seconds_since1970 2015-11-11 20:45:23 -05:00
mvumi.h
ncr53c8xx.c
ncr53c8xx.h
NCR53c406a.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
NCR5380.c ncr5380: Cleanup whitespace and parentheses 2016-01-06 21:43:10 -05:00
NCR5380.h ncr5380: Use runtime register mapping 2016-01-06 21:43:10 -05:00
NCR_D700.c
NCR_D700.h
NCR_Q720.c
NCR_Q720.h
nsp32.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
nsp32.h
nsp32_debug.c
nsp32_io.h
osst.c
osst.h
osst_detect.h
osst_options.h
pas16.c ncr5380: Fix soft lockups 2016-01-06 21:43:09 -05:00
pas16.h ncr5380: Fix and cleanup scsi_host_template initializers 2016-01-06 21:43:03 -05:00
pmcraid.c SCSI queue for 4.4. 2015-11-12 07:06:18 -05:00
pmcraid.h
ppa.c scsi: ppa: use new parport device model 2016-02-23 21:27:02 -05:00
ppa.h
ps3rom.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qla1280.h
qlogicfas.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicfas408.c
qlogicfas408.h
qlogicpti.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
qlogicpti.h
raid_class.c
script_asm.pl
scsi.c scsi: rescan VPD attributes 2015-11-30 11:23:45 -05:00
scsi.h
scsi_common.c scsi: Protect against buffer possible overflow in scsi_set_sense_information 2015-07-23 22:53:05 -07:00
scsi_debug.c Merge branch 'jejb-scsi' into misc 2016-01-07 15:51:13 -08:00
scsi_devinfo.c Merge remote-tracking branch 'mkp-scsi/4.5/scsi-fixes' into fixes 2016-02-11 21:50:48 -08:00
scsi_dh.c scsi_dh: move 'dh_state' sysfs attribute to generic code 2015-12-02 16:29:19 -05:00
scsi_error.c mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM 2015-11-06 17:50:42 -08:00
scsi_ioctl.c
scsi_lib.c scsi: Add scsi_vpd_tpg_id() 2015-12-02 16:43:11 -05:00
scsi_lib_dma.c
scsi_logging.c scsi_logging: return void for dev_printk() functions 2015-02-04 08:00:24 -08:00
scsi_logging.h
scsi_module.c
scsi_netlink.c
scsi_pm.c Revert "SCSI: Fix NULL pointer dereference in runtime PM" 2015-12-10 12:24:44 -05:00
scsi_priv.h scsi_dh: move 'dh_state' sysfs attribute to generic code 2015-12-02 16:29:19 -05:00
scsi_proc.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
scsi_sas_internal.h
scsi_scan.c scsi: Export function scsi_scan.c:sanitize_inquiry_string 2016-02-23 21:27:02 -05:00
scsi_sysctl.c
scsi_sysfs.c scsi: fix soft lockup in scsi_remove_target() on module removal 2016-02-11 21:47:32 -08:00
scsi_trace.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
scsi_transport_api.h
scsi_transport_fc.c scsi_transport_fc: Introduce scsi_host_{get,put}() 2015-11-30 17:43:55 -05:00
scsi_transport_iscsi.c scsi_transport_iscsi: Add 25G and 40G speed definition 2016-02-23 21:27:02 -05:00
scsi_transport_sas.c scsi_transport_sas: add function to get SAS endpoint address 2015-12-18 19:29:50 -08:00
scsi_transport_spi.c [SCSI] Fix printk typos in drivers/scsi 2015-08-07 14:28:45 +02:00
scsi_transport_srp.c IB/srp: Avoid using uninitialized variable 2015-07-14 13:20:09 -04:00
scsi_typedefs.h
scsicam.c
sd.c Merge remote-tracking branch 'mkp-scsi/4.5/scsi-fixes' into fixes 2016-02-04 21:37:52 -08:00
sd.h block/sd: Fix device-imposed transfer length limits 2015-11-25 21:38:58 -05:00
sd_dif.c block: Consolidate static integrity profile properties 2015-10-21 14:42:38 -06:00
ses.c ses: fix discovery of SATA devices in SAS enclosures 2015-12-18 19:29:50 -08:00
sg.c drivers/scsi/sg.c: mark VMA as VM_IO to prevent migration 2016-02-03 08:28:43 -08:00
sgiwd93.c
sim710.c scsi: sim710: fix build warning 2016-02-23 21:27:02 -05:00
sni_53c710.c
sr.c SCSI: fix crashes in sd and sr runtime PM 2016-01-26 17:24:16 -08:00
sr.h
sr_ioctl.c sr: reduce debug noise in sr_do_ioctl 2015-01-20 19:43:24 +01:00
sr_vendor.c
st.c st: Fix MTMKPART to work with newer drives 2016-02-23 21:27:02 -05:00
st.h st: Remove obsolete scsi_tape.max_pfn 2015-11-18 11:59:09 -05:00
st_options.h
stex.c stex: Remove use of struct timeval 2015-11-09 17:42:19 -08:00
storvsc_drv.c Merge remote-tracking branch 'mkp-scsi/4.5/scsi-fixes' into fixes 2016-02-04 21:37:52 -08:00
sun3_scsi.c atari_scsi, sun3_scsi: Remove global Scsi_Host pointer 2016-01-06 21:43:08 -05:00
sun3_scsi.h
sun3_scsi_vme.c
sun3x_esp.c arch, drivers: don't include <asm/io.h> directly, use <linux/io.h> instead 2015-08-10 23:07:05 -04:00
sun_esp.c
sym53c416.c scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
sym53c416.h
t128.c ncr5380: Fix soft lockups 2016-01-06 21:43:09 -05:00
t128.h ncr5380: Fix and cleanup scsi_host_template initializers 2016-01-06 21:43:03 -05:00
u14-34f.c
ultrastor.c
ultrastor.h
virtio_scsi.c virtio/vhost: fixes for 4.2 2015-07-23 13:07:04 -07:00
vmw_pvscsi.c VMW_PVSCSI: Fix the issue of DMA-API related warnings. 2015-12-10 12:57:04 -05:00
vmw_pvscsi.h VMW_PVSCSI: Fix the issue of DMA-API related warnings. 2015-12-10 12:57:04 -05:00
wd33c93.c scsi: print single-character strings with seq_putc 2015-02-02 09:57:46 -08:00
wd33c93.h
wd719x.c [SCSI] Fix printk typos in drivers/scsi 2015-08-07 14:28:45 +02:00
wd719x.h scsi: Do not set cmd_per_lun to 1 in the host template 2015-05-31 18:06:28 -07:00
wd7000.c scsi: replace seq_printf with seq_puts 2015-02-02 09:57:45 -08:00
xen-scsifront.c xen: Use correctly the Xen memory terminologies 2015-09-08 18:03:49 +01:00
zalon.c
zorro7xx.c