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Mike Christie ecefe8a975 [SCSI] fix shared tag map tag allocation 
When drivers use a shared tag map we can end up with more requests
than tags, because the tag map is shost->can_queue tags and there
can be sdevs * sdev->queue_depth requests. In scsi_request_fn
if tag allocation fails we just drop down to just dequeueing the
tag without a tag. The problem is that drivers using the shared tag
map rely on a valid tag always being set, because it will use the
tag number to lookup commands later.

This patch has us check if we got a valid tag when the host lock
is held right before we check if the host queue is ready. We do the
check here because to allocate the tag we need the q lock, but
if the tag is bad we want to add the device/q onto the starved list
which requires the host lock.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
 		2008-07-26 15:14:50 -04:00
..
aacraid Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-15 18:58:04 -07:00
aic7xxx scsi: fix integer as NULL pointer warnings 2008-04-28 17:31:13 -07:00
aic7xxx_old Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
aic94xx aic94xx: treat firmware data as const 2008-07-10 14:26:15 +01:00
arcmsr SCSI: convert struct class_device to struct device 2008-04-19 19:10:33 -07:00
arm [ARM] rpc: acornscsi: update to new style ecard driver 2008-07-03 14:25:57 +01:00
device_handler scsi_dh: Verify "dev" is a sdev before accessing it. 2008-07-16 17:54:21 -07:00
dpt [SCSI] dpt_i2o: Add PROC_IA64 define 2008-06-15 11:12:20 -05:00
ibmvscsi ibmvfc: Add support for collaborative memory overcommit 2008-07-25 15:44:45 +10:00
libsas Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-04-18 11:25:31 -07:00
lpfc [SCSI] lpfc 8.2.7 : Update version to 8.2.7 2008-07-12 08:22:29 -05:00
megaraid megaraid: BKL pushdown 2008-06-20 14:05:58 -06:00
pcmcia SCSI: convert struct class_device to struct device 2008-04-19 19:10:33 -07:00
qla2xxx [SCSI] qla2xxx: Update version number to 8.02.01-k5. 2008-07-26 15:14:47 -04:00
qla4xxx [SCSI] qla4xxx: fix queue depth setting 2008-07-26 15:14:49 -04:00
sym53c8xx_2 [SCSI] sym53c8xx: Fix bogus sym_que_entry re-implementation of container_of 2008-07-12 08:22:37 -05:00
.gitignore [SCSI] 53c7xx: fix removal fallout 2008-01-11 18:22:30 -06:00
3w-9xxx.c Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
3w-9xxx.h [SCSI] 3w-9xxx: add support for 9690SA 2007-07-21 08:57:40 -05:00
3w-xxxx.c Add a bunch of cycle_kernel_lock() calls 2008-06-20 14:05:53 -06:00
3w-xxxx.h [SCSI] 3ware 8000 serialize reset code 2007-01-06 09:18:00 -06:00
53c700.c [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer 2008-05-02 10:18:22 -05:00
53c700.h [SCSI] 53c700: m68k support for the 53c700 SCSI core 2007-06-17 16:15:56 -05:00
53c700.scr
…
53c700_d.h_shipped
…
BusLogic.c [SCSI] BusLogic: make FlashPoint support x86-32 only 2008-04-07 12:15:44 -05:00
BusLogic.h [SCSI] BusLogic: make FlashPoint support x86-32 only 2008-04-07 12:15:44 -05:00
FlashPoint.c [SCSI] FlashPoint: fix off-by-one errors 2008-04-27 12:19:55 -05:00
Kconfig [SCSI] ibmvfc: IBM Power Virtual Fibre Channel Adapter Client Driver 2008-07-12 08:22:32 -05:00
Makefile [SCSI] ibmvfc: IBM Power Virtual Fibre Channel Adapter Client Driver 2008-07-12 08:22:32 -05:00
NCR53c406a.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
NCR5380.c [SCSI] NCR5380: fix section mismatch 2008-01-23 13:44:31 -06:00
NCR5380.h [SCSI] NCR5380: Use scsi_eh API for REQUEST_SENSE invocation 2007-10-12 14:55:07 -04:00
NCR_D700.c [SCSI] kmalloc + memset conversion to kzalloc 2007-10-12 14:41:00 -04:00
NCR_D700.h
…
NCR_Q720.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
NCR_Q720.h
…
a100u2w.c Don't crash on IOMMU overflow in A100U2W driver 2008-07-15 14:30:56 -07:00
a100u2w.h [SCSI] a100u2w: Convert into Linux style 2007-06-17 16:09:29 -05:00
a2091.c [SCSI] wd33c93: fix up cut and paste error 2008-04-07 12:19:07 -05:00
a2091.h [SCSI] wd33c93: Scsi_Cmnd convertion 2006-09-12 17:12:31 -05:00
a3000.c [SCSI] WD33C93: let platform stub override no_sync/fast/dma_mode 2008-04-07 12:19:01 -05:00
a3000.h [SCSI] wd33c93: Scsi_Cmnd convertion 2006-09-12 17:12:31 -05:00
a4000t.c [SCSI] kmalloc + memset conversion to kzalloc 2007-10-12 14:41:00 -04:00
advansys.c [SCSI] advansys: Fix bug in AdvLoadMicrocode 2008-03-07 10:05:43 -06:00
aha152x.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
aha152x.h [SCSI] aha152x: fix debug mode symbol conflict 2007-08-04 09:11:06 -05:00
aha1542.c [SCSI] aha1542: minor irq handler cleanups 2008-04-27 12:19:55 -05:00
aha1542.h
…
aha1740.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
aha1740.h
…
aic7xxx_old.c Remove pointless casts from void pointers 2008-02-06 10:41:01 -08:00
atari_NCR5380.c [SCSI] atari_NCR5380, sun3_NCR5380: operator precedence fix 2008-01-11 18:28:57 -06:00
atari_dma_emul.c IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
atari_scsi.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
atari_scsi.h m68k: Atari SCSI driver compile fixes 2007-05-04 17:59:05 -07:00
atp870u.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
atp870u.h
…
bvme6000_scsi.c [SCSI] kmalloc + memset conversion to kzalloc 2007-10-12 14:41:00 -04:00
ch.c Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
constants.c [SCSI] add support for variable length extended commands 2008-05-02 11:33:25 -05:00
dc395x.c [SCSI] Remove random noop unchecked_isa_dma users 2008-04-07 12:15:40 -05:00
dc395x.h
…
dmx3191d.c [SCSI] pci_module_init conversion in scsi subsystem 2006-09-26 11:35:32 -07:00
dpt_i2o.c device create: scsi: convert device_create to device_create_drvdata 2008-07-21 21:54:44 -07:00
dpti.h drivers/scsi/dpt_i2o.c: fix build on alpha 2008-05-08 10:46:56 -07:00
dtc.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
dtc.h
…
eata.c [SCSI] aha152x, eata, u14-34f: minor irq handler cleanups 2008-04-25 09:52:30 -05:00
eata_generic.h [SCSI] eata_pio: Remove FALSE/TRUE defines 2007-03-20 11:27:03 -05:00
eata_pio.c [SCSI] Remove random noop unchecked_isa_dma users 2008-04-07 12:15:40 -05:00
eata_pio.h
…
esp_scsi.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-15 18:58:04 -07:00
esp_scsi.h [SCSI] esp: tidy up target reference counting 2008-06-25 12:36:13 -05:00
fd_mcs.c [SCSI] fd_mcs: convert to accessors and !use_sg cleanup 2008-01-11 18:22:35 -06:00
fdomain.c scsi: fix integer as NULL pointer warnings 2008-04-28 17:31:13 -07:00
fdomain.h
…
g_NCR5380.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
g_NCR5380.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
g_NCR5380_mmio.c
…
gdth.c gdth: cdev lock_kernel() pushdown 2008-06-20 14:05:49 -06:00
gdth.h [SCSI] gdth: PCI probe cleanups, prep for PCI hotplug API conversion 2008-04-07 12:15:36 -05:00
gdth_ioctl.h
…
gdth_proc.c [SCSI] gdth: don't call pci_free_consistent under spinlock 2008-02-18 09:02:25 -06:00
gdth_proc.h [SCSI] gdth: clean up host private data 2007-10-12 14:55:46 -04:00
gvp11.c [SCSI] wd33c93: fix up cut and paste error 2008-04-07 12:19:07 -05:00
gvp11.h [SCSI] wd33c93: Scsi_Cmnd convertion 2006-09-12 17:12:31 -05:00
hosts.c driver core: remove KOBJ_NAME_LEN define 2008-07-21 21:54:52 -07:00
hptiop.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
hptiop.h [SCSI] hptiop: add more adapter models and other fixes 2008-01-11 18:28:06 -06:00
ibmmca.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
ide-scsi.c ide-scsi: remove kmalloced struct request 2008-07-24 22:53:35 +02:00
imm.c [SCSI] imm: convert to accessors and !use_sg cleanup 2008-01-11 18:22:41 -06:00
imm.h Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
in2000.c [SCSI] in2000: convert to accessors and !use_sg cleanup 2008-01-11 18:22:36 -06:00
in2000.h
…
initio.c [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer 2008-05-02 10:18:22 -05:00
initio.h [SCSI] initio: Convert into a real Linux driver and update to modern style 2007-05-22 11:08:56 -05:00
ipr.c [SCSI] ipr: Fix HDIO_GET_IDENTITY oops for SATA devices 2008-07-11 13:45:48 -05:00
ipr.h [SCSI] ipr: Use PCI-E reset API for new ipr adapter 2007-05-08 11:54:40 -05:00
ips.c [SCSI] ips: remove spurious cpu_to_leX on outX statements 2008-04-07 12:19:11 -05:00
ips.h [SCSI] ips: trim trailing whitespace 2008-01-11 18:27:59 -06:00
iscsi_tcp.c [SCSI] libiscsi, iscsi_tcp, ib_iser: fix setting of can_queue with old tools. 2008-07-12 08:22:29 -05:00
iscsi_tcp.h [SCSI] iscsi_tcp: handle iscsi_cmd_task rename 2008-07-12 08:22:20 -05:00
jazz_esp.c [SCSI] jazz_esp, sgiwd93, sni_53c710, sun3x_esp: fix platform driver hotplug/coldplug 2008-04-27 12:33:04 -05:00
lasi700.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
libiscsi.c [SCSI] libiscsi, iscsi_tcp, ib_iser: fix setting of can_queue with old tools. 2008-07-12 08:22:29 -05:00
libsrp.c [SCSI] implement scsi_data_buffer 2008-01-30 13:03:40 -06:00
mac53c94.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
mac53c94.h
…
mac_esp.c MODULE_LICENSE expects "GPL v2", not "GPLv2" 2008-05-21 16:56:00 -07:00
mac_scsi.c [SCSI] Remove random noop unchecked_isa_dma users 2008-04-07 12:15:40 -05:00
mac_scsi.h
…
megaraid.c Add a bunch of cycle_kernel_lock() calls 2008-06-20 14:05:53 -06:00
megaraid.h [SCSI] megaraid: fix warnings when CONFIG_PROC_FS=n 2007-05-08 11:15:08 -05:00
mesh.c [SCSI] SCSI: remove dev->power.power_state from mesh driver 2008-06-05 09:23:44 -05:00
mesh.h
…
mvme16x_scsi.c [SCSI] kmalloc + memset conversion to kzalloc 2007-10-12 14:41:00 -04:00
mvme147.c [SCSI] wd33c93: fix up cut and paste error 2008-04-07 12:19:07 -05:00
mvme147.h [SCSI] wd33c93: Scsi_Cmnd convertion 2006-09-12 17:12:31 -05:00
mvsas.c drivers/scsi/mvsas.c: fix printk warnings 2008-05-01 08:04:03 -07:00
ncr53c8xx.c drivers/scsi/ncr53c8xx.c: fix warning 2008-05-01 08:04:02 -07:00
ncr53c8xx.h [SCSI] ncr53c8xx: Call scsi_host_put in release 2007-10-12 14:51:18 -04:00
nsp32.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
nsp32.h define global BIT macro 2007-10-19 11:53:42 -07:00
nsp32_debug.c
…
nsp32_io.h
…
osst.c Merge commit 'v2.6.26' into bkl-removal 2008-07-14 15:29:34 -06:00
osst.h [SCSI] osst: Use mutex instead of semaphore 2007-10-12 14:50:55 -04:00
osst_detect.h
…
osst_options.h
…
pas16.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
pas16.h
…
ppa.c [SCSI] ppa: convert to accessors and !use_sg cleanup 2008-01-11 18:22:41 -06:00
ppa.h Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
ps3rom.c [SCSI] ps3rom: use scsi_build_sense_buffer 2008-04-07 12:19:02 -05:00
ql1040_fw.h
…
ql1280_fw.h
…
ql12160_fw.h
…
qla1280.c scsi: fix integer as NULL pointer warning 2008-05-23 08:11:07 -07:00
qla1280.h [SCSI] qla1280: eliminate wasted space in request and response ring 2007-10-23 12:35:35 -04:00
qlogicfas.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
qlogicfas408.c [SG] Update drivers to use sg helpers 2007-10-22 21:19:53 +02:00
qlogicfas408.h [SCSI] Scsi_Cmnd conversion in qlogicfas408 driver 2006-10-25 15:11:55 -07:00
qlogicpti.c [SCSI] qlogicpt: section fixes 2008-02-23 09:07:32 -06:00
qlogicpti.h [SCSI] qlogicpti: Add a slave_configure method 2007-10-12 14:52:38 -04:00
qlogicpti_asm.c [SPARC]: Fix some section mismatch warnings in sparc drivers. 2006-10-17 19:28:51 -07:00
raid_class.c SCSI: convert struct class_device to struct device 2008-04-19 19:10:33 -07:00
script_asm.pl
…
scsi.c [SCSI] fix shared tag map setup 2008-07-26 15:14:48 -04:00
scsi.h [SCSI] remove unnecessary includes of linux/config.h from drivers/scsi/ 2006-08-19 13:39:11 -07:00
scsi_debug.c [SCSI] scsi_debug: add support for rotation speed 2008-07-12 08:22:30 -05:00
scsi_devinfo.c proc: switch /proc/scsi/device_info to seq_file interface 2008-04-29 08:06:19 -07:00
scsi_error.c [SCSI] scsi_dh: add infrastructure for SCSI Device Handlers 2008-06-05 09:23:40 -05:00
scsi_ioctl.c [SCSI] sd,sr: add early detection of medium not present 2008-01-11 18:22:50 -06:00
scsi_lib.c [SCSI] fix shared tag map tag allocation 2008-07-26 15:14:50 -04:00
scsi_lib_dma.c [SCSI] don't build scsi_dma_{map,unmap} for !HAS_DMA 2007-07-14 19:28:10 -05:00
scsi_logging.h Remove obsolete #include <linux/config.h> 2006-06-30 19:25:36 +02:00
scsi_module.c
…
scsi_netlink.c [NETNS]: Consolidate kernel netlink socket destruction. 2008-01-28 15:08:07 -08:00
scsi_priv.h [SCSI] use default attributes for scsi_host 2008-04-22 15:16:31 -05:00
scsi_proc.c scsi: use non-racy method for proc entries creation 2008-04-29 08:06:21 -07:00
scsi_sas_internal.h SCSI: convert struct class_device to struct device 2008-04-19 19:10:33 -07:00
scsi_scan.c [SCSI] make struct scsi_{host,target}_type static 2008-07-12 08:22:36 -05:00
scsi_sysctl.c [SCSI] small cleanups 2007-07-18 11:16:32 -05:00
scsi_sysfs.c [SCSI] scsi_dh: add infrastructure for SCSI Device Handlers 2008-06-05 09:23:40 -05:00
scsi_tgt_if.c scsi-tgt: BKL pushdown 2008-07-02 15:06:25 -06:00
scsi_tgt_lib.c [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer 2008-05-02 10:18:22 -05:00
scsi_tgt_priv.h [SCSI] tgt: add I_T nexus support 2007-10-12 14:37:50 -04:00
scsi_transport_api.h [PATCH] SCSI: make scsi_implement_eh() generic API for SCSI transports 2006-05-20 00:39:08 -04:00
scsi_transport_fc.c driver core: remove KOBJ_NAME_LEN define 2008-07-21 21:54:52 -07:00
scsi_transport_fc_internal.h [SCSI] fc_transport: add target driver support 2007-10-12 14:46:58 -04:00
scsi_transport_iscsi.c driver core: remove KOBJ_NAME_LEN define 2008-07-21 21:54:52 -07:00
scsi_transport_sas.c block: make queue flags non-atomic 2008-04-29 14:48:33 +02:00
scsi_transport_spi.c [SCSI] scsi_transport_spi: include sysfs.h 2008-04-27 12:19:55 -05:00
scsi_transport_srp.c SCSI: convert struct class_device to struct device 2008-04-19 19:10:33 -07:00
scsi_transport_srp_internal.h [SCSI] scsi_transport_srp: remove tgt dependencies 2007-10-12 14:38:09 -04:00
scsi_typedefs.h [SCSI] remove scsi_request infrastructure 2006-06-10 16:24:40 -05:00
scsi_wait_scan.c [SCSI] Add ability to scan scsi busses asynchronously 2006-10-11 13:44:25 -05:00
scsicam.c [SCSI] Add Documentation and integrate into docbook build 2008-01-11 18:22:40 -06:00
sd.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-15 18:58:04 -07:00
sd.h [SCSI] sd: Move scsi_disk() accessor function to sd.h 2008-07-12 08:22:31 -05:00
ses.c [SCSI] ses: Fix timeout 2008-06-24 12:02:27 -05:00
sg.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-07-15 18:58:04 -07:00
sgiwd93.c [SCSI] jazz_esp, sgiwd93, sni_53c710, sun3x_esp: fix platform driver hotplug/coldplug 2008-04-27 12:33:04 -05:00
sim710.c Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2007-07-22 11:36:49 -07:00
sni_53c710.c [SCSI] jazz_esp, sgiwd93, sni_53c710, sun3x_esp: fix platform driver hotplug/coldplug 2008-04-27 12:33:04 -05:00
sr.c scsi: sr avoids useless buffer allocation 2008-07-04 09:52:14 +02:00
sr.h [SCSI] sr: fix test unit ready responses 2008-02-07 18:02:44 -06:00
sr_ioctl.c [SCSI] sr: fix test unit ready responses 2008-02-07 18:02:44 -06:00
sr_vendor.c [PATCH] getting rid of all casts of k[cmz]alloc() calls 2006-12-13 09:05:58 -08:00
st.c [SCSI] st: Remove bogus memset 2008-07-26 15:14:47 -04:00
st.h [SCSI] st: add option to use SILI in variable block reads 2008-04-07 12:15:39 -05:00
st_options.h [SCSI] st: add option to use SILI in variable block reads 2008-04-07 12:15:39 -05:00
stex.c [SCSI] stex: fix queue depth setting 2008-07-26 15:14:49 -04:00
sun3_NCR5380.c [SCSI] atari_NCR5380, sun3_NCR5380: operator precedence fix 2008-01-11 18:28:57 -06:00
sun3_scsi.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
sun3_scsi.h [PATCH] Sun3 SCSI: Make sun3 scsi drivers compile/work again 2006-12-09 09:41:18 -08:00
sun3_scsi_vme.c [SCSI] sun3_scsi_vme: add MODULE_LICENSE 2008-04-16 09:28:11 -05:00
sun3x_esp.c [SCSI] jazz_esp, sgiwd93, sni_53c710, sun3x_esp: fix platform driver hotplug/coldplug 2008-04-27 12:33:04 -05:00
sun_esp.c PAGE_ALIGN(): correctly handle 64-bit values on 32-bit architectures 2008-07-24 10:47:21 -07:00
sym53c416.c [SCSI] sym53c416: fix module parameters 2008-02-12 15:24:58 -06:00
sym53c416.h
…
t128.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
t128.h [SCSI] scsi: t128 scsi_cmnd convertion 2006-11-15 16:43:50 -06:00
tmscsim.c [SCSI] replace sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE 2008-01-23 11:29:27 -06:00
tmscsim.h [SCSI] tmscsim: Further clean-up of the driver 2007-07-14 18:56:33 -05:00
u14-34f.c [SCSI] u14-34f: Fix 32bit only problem 2008-05-02 13:18:06 -05:00
ultrastor.c scsi: fix integer as NULL pointer warnings 2008-04-28 17:31:13 -07:00
ultrastor.h [SCSI] scsi-driver ultrastore replace Scsi_Cmnd with struct scsi_cmnd 2006-09-07 12:39:34 -05:00
wd33c93.c [SCSI] WD33C93: let platform stub override no_sync/fast/dma_mode 2008-04-07 12:19:01 -05:00
wd33c93.h Spelling fix: explicitly 2007-10-19 23:22:55 +02:00
wd7000.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
zalon.c [PATCH] irq-flags: scsi: Use the new IRQF_ constants 2006-07-02 13:58:53 -07:00
zorro7xx.c m68k: zorro7xx needs <asm/amigahw.h> 2007-11-29 09:24:52 -08:00