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f18573abcc
linux/drivers/scsi
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FUJITA Tomonori f18573abcc block: move the padding adjustment to blk_rq_map_sg 
blk_rq_map_user adjusts bi_size of the last bio. It breaks the rule
that req->data_len (the true data length) is equal to sum(bio). It
broke the scsi command completion code.

commit e97a294ef6 was introduced to fix
the above issue. However, the partial completion code doesn't work
with it. The commit is also a layer violation (scsi mid-layer should
not know about the block layer's padding).

This patch moves the padding adjustment to blk_rq_map_sg (suggested by
James). The padding works like the drain buffer. This patch breaks the
rule that req->data_len is equal to sum(sg), however, the drain buffer
already broke it. So this patch just restores the rule that
req->data_len is equal to sub(bio) without breaking anything new.

Now when a low level driver needs padding, blk_rq_map_user and
blk_rq_map_user_iov guarantee there's enough room for padding.
blk_rq_map_sg can safely extend the last entry of a scatter list.

blk_rq_map_sg must extend the last entry of a scatter list only for a
request that got through bio_copy_user_iov. This patches introduces
new REQ_COPY_USER flag.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-04-21 09:50:08 +02:00
..
aacraid [SCSI] aacraid: Do not describe check_reset parameter with its value 2008-04-16 09:34:03 -05:00
aic7xxx [SCSI] aic7xxx: Test opcode, not definition in aicasm:type_check() 2008-04-07 12:18:59 -05:00
aic7xxx_old
aic94xx [SCSI] aic94xx: cleanups 2008-04-07 12:19:08 -05:00
arcmsr [SCSI] arcmsr: fix iounmap error for Type B adapter 2008-03-14 15:25:26 -05:00
arm [SCSI] Remove random noop unchecked_isa_dma users 2008-04-07 12:15:40 -05:00
dpt [SCSI] dpt: whitespace cleanup 2007-04-01 10:10:04 -05:00
ibmvscsi [SCSI] tgt: fix build errors when dprintk is defined 2008-03-03 13:19:52 -06:00
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 8.2.6 : Update lpfc driver version to 8.2.6 2008-04-10 07:53:34 -05:00
megaraid [SCSI] megaraid_sas: Add the new controller(1078DE) support to the driver 2008-04-07 12:19:00 -05:00
pcmcia pcmcia: convert some internal-only ioaddr_t to unsigned int 2008-02-05 09:44:08 -08:00
qla2xxx [SCSI] qla2xxx: Update version number to 8.02.01-k1. 2008-04-07 12:19:16 -05:00
qla4xxx [SCSI] qla4xxx: fix scsi command completion, lun reset and target reset code 2008-04-07 12:19:00 -05:00
sym53c8xx_2 [SCSI] sym53c8xx: fix resid calculation 2008-02-07 18:02:34 -06:00
.gitignore [SCSI] 53c7xx: fix removal fallout 2008-01-11 18:22:30 -06:00
3w-9xxx.c [SCSI] 3w-9xxx, 3w-xxxx: memset not needed in probe 2008-04-07 12:18:59 -05:00
3w-9xxx.h [SCSI] 3w-9xxx: add support for 9690SA 2007-07-21 08:57:40 -05:00
3w-xxxx.c [SCSI] 3w-9xxx, 3w-xxxx: memset not needed in probe 2008-04-07 12:18:59 -05:00
3w-xxxx.h [SCSI] 3ware 8000 serialize reset code 2007-01-06 09:18:00 -06:00
53c700_d.h_shipped
53c700.c [SCSI] replace sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE 2008-01-23 11:29:27 -06:00
53c700.h [SCSI] 53c700: m68k support for the 53c700 SCSI core 2007-06-17 16:15:56 -05:00
53c700.scr
a100u2w.c [SCSI] a100u2w: fix bitmap lookup routine 2008-03-20 09:19:25 -05:00
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
a3000.c [SCSI] WD33C93: let platform stub override no_sync/fast/dma_mode 2008-04-07 12:19:01 -05:00
a3000.h
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] aha152x: Use scsi_eh API for REQUEST_SENSE invocation 2008-01-11 18:22:34 -06:00
aha152x.h [SCSI] aha152x: fix debug mode symbol conflict 2007-08-04 09:11:06 -05:00
aha1542.c MAINTAINERS: remove Adam Fritzler, remove his email address in other sources 2008-02-03 16:36:24 +02:00
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_dma_emul.c
atari_NCR5380.c [SCSI] atari_NCR5380, sun3_NCR5380: operator precedence fix 2008-01-11 18:28:57 -06:00
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] atp870u: convert to accessors and !use_sg cleanup 2008-01-11 18:22:38 -06:00
atp870u.h
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
bvme6000_scsi.c [SCSI] kmalloc + memset conversion to kzalloc 2007-10-12 14:41:00 -04:00
ch.c [SCSI] ch: fix sparse shadowed variable warnings 2008-04-07 12:19:08 -05:00
constants.c [SCSI] Add Documentation and integrate into docbook build 2008-01-11 18:22:40 -06:00
dc395x.c [SCSI] Remove random noop unchecked_isa_dma users 2008-04-07 12:15:40 -05:00
dc395x.h
dmx3191d.c
dpt_i2o.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
dpti.h revert "dpt_i2o: convert to SCSI hotplug model" 2007-12-10 19:43:54 -08:00
dtc.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
dtc.h
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
eata.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
esp_scsi.c esp_scsi: fix reset cleanup spinlock recursion 2007-12-10 19:43:55 -08:00
esp_scsi.h [SCSI] ESP: Revert ESP_BUS_TIMEOUT back down to 250 2007-07-31 10:51:25 -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 [SG] Update drivers to use sg helpers 2007-10-22 21:19:53 +02:00
fdomain.h
FlashPoint.c [SCSI] BusLogic: make FlashPoint support x86-32 only 2008-04-07 12:15:44 -05:00
g_NCR5380_mmio.c
g_NCR5380.c [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage 2007-11-25 12:19:26 +02:00
g_NCR5380.h
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
gdth.c [SCSI] gdth: remove command accessors 2008-04-07 12:15:39 -05:00
gdth.h [SCSI] gdth: PCI probe cleanups, prep for PCI hotplug API conversion 2008-04-07 12:15:36 -05:00
gvp11.c [SCSI] wd33c93: fix up cut and paste error 2008-04-07 12:19:07 -05:00
gvp11.h
hosts.c [SCSI] hosts.c: removed one unneeded shost->active_mode assignment 2008-04-07 12:19:05 -05:00
hptiop.c [SCSI] hptiop: fix header.context usage 2008-04-07 12:19:08 -05:00
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: do non-atomic pc->flags testing 2008-04-18 00:46:27 +02:00
imm.c [SCSI] imm: convert to accessors and !use_sg cleanup 2008-01-11 18:22:41 -06:00
imm.h
in2000.c [SCSI] in2000: convert to accessors and !use_sg cleanup 2008-01-11 18:22:36 -06:00
in2000.h
initio.c [SCSI] initio: fix big endian problems for auto request sense 2008-04-11 17:16:28 -04:00
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 libata: kill ata_noop_dev_select() 2008-04-17 15:44:24 -04:00
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] iscsi: bidi support for iscsi_tcp 2008-04-18 11:53:24 -05:00
iscsi_tcp.h [SCSI] iscsi_tcp: enable sg chaining 2008-01-11 18:28:48 -06:00
jazz_esp.c [SCSI] esp: use shost_priv 2007-05-31 17:30:04 -04:00
Kconfig [SCSI] BusLogic: make FlashPoint support x86-32 only 2008-04-07 12:15:44 -05:00
lasi700.c some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
libiscsi.c [SCSI] iscsi: bidi support at the generic libiscsi level 2008-04-18 11:53:00 -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_scsi.c [SCSI] Remove random noop unchecked_isa_dma users 2008-04-07 12:15:40 -05:00
mac_scsi.h
Makefile [SCSI] mvsas: Add Marvell 6440 SAS/SATA driver 2008-02-23 07:29:31 -06:00
megaraid.c [SCSI] megaraid: outb_p extermination 2008-02-18 08:57:16 -06:00
megaraid.h [SCSI] megaraid: fix warnings when CONFIG_PROC_FS=n 2007-05-08 11:15:08 -05:00
mesh.c PM: Introduce PM_EVENT_HIBERNATE callback state 2008-02-23 10:40:04 -08:00
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
mvsas.c [SCSI] mvsas: check subsystem id 2008-03-28 12:32:22 -05:00
ncr53c8xx.c [SCSI] ncr53c8xx: fix sense_buffer access bug 2008-01-30 13:03:39 -06:00
ncr53c8xx.h [SCSI] ncr53c8xx: Call scsi_host_put in release 2007-10-12 14:51:18 -04:00
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
nsp32_debug.c
nsp32_io.h
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
osst_detect.h
osst_options.h
osst.c [SCSI] osst: fix if (...) \n #if... cases missing semicolons when false 2007-10-27 14:31:06 -05:00
osst.h [SCSI] osst: Use mutex instead of semaphore 2007-10-12 14:50:55 -04:00
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
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] qla1280: remove version check 2008-04-17 12:59:21 -05:00
qla1280.h [SCSI] qla1280: eliminate wasted space in request and response ring 2007-10-23 12:35:35 -04:00
qlogicfas408.c [SG] Update drivers to use sg helpers 2007-10-22 21:19:53 +02:00
qlogicfas408.h
qlogicfas.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
qlogicpti_asm.c
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
raid_class.c [SCSI] transport_class: BUG if we can't release the attribute container 2008-04-07 12:19:10 -05:00
script_asm.pl
scsi_debug.c [SCSI] scsi_debug: remove unnecessary function declarations 2008-04-07 12:19:07 -05:00
scsi_devinfo.c [SCSI] kernel-doc: use correct function name 2008-01-11 18:22:44 -06:00
scsi_error.c [SCSI] add scsi_build_sense_buffer helper function 2008-04-07 12:19:01 -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_dma.c [SCSI] don't build scsi_dma_{map,unmap} for !HAS_DMA 2007-07-14 19:28:10 -05:00
scsi_lib.c [SCSI] fix barrier failure issue 2008-04-07 12:19:10 -05:00
scsi_logging.h
scsi_module.c
scsi_netlink.c [NETNS]: Consolidate kernel netlink socket destruction. 2008-01-28 15:08:07 -08:00
scsi_priv.h [SCSI] don't use __GFP_DMA for sense buffers if not required 2008-01-23 11:37:44 -06:00
scsi_proc.c [SCSI] Add Documentation and integrate into docbook build 2008-01-11 18:22:40 -06:00
scsi_sas_internal.h
scsi_scan.c [SCSI] docbook: fix scsi source file 2008-03-03 13:17:14 -06:00
scsi_sysctl.c [SCSI] small cleanups 2007-07-18 11:16:32 -05:00
scsi_sysfs.c Revert "[SCSI] fix bsg queue oops with iscsi logout" 2008-03-26 09:09:19 -07:00
scsi_tgt_if.c [SCSI] tgt: convert to use the data buffer accessors 2008-01-11 18:22:30 -06:00
scsi_tgt_lib.c [SCSI] tgt: use KMEM_CACHE macro 2008-04-16 09:22:19 -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
scsi_transport_fc_internal.h [SCSI] fc_transport: add target driver support 2007-10-12 14:46:58 -04:00
scsi_transport_fc.c [SCSI] Add Documentation and integrate into docbook build 2008-01-11 18:22:40 -06:00
scsi_transport_iscsi.c [SCSI] iscsi class: regression - fix races with state manipulation and blocking/unblocking 2008-03-05 12:04:09 -06:00
scsi_transport_sas.c drivers/scsi/: Spelling fixes 2008-02-03 17:28:22 +02:00
scsi_transport_spi.c [SCSI] scsi_transport_spi: convert to attribute groups 2008-01-23 11:29:18 -06:00
scsi_transport_srp_internal.h [SCSI] scsi_transport_srp: remove tgt dependencies 2007-10-12 14:38:09 -04:00
scsi_transport_srp.c [SCSI] docbook and kernel-doc updates 2008-01-11 18:22:45 -06:00
scsi_typedefs.h
scsi_wait_scan.c
scsi.c block: move the padding adjustment to blk_rq_map_sg 2008-04-21 09:50:08 +02:00
scsi.h
scsicam.c [SCSI] Add Documentation and integrate into docbook build 2008-01-11 18:22:40 -06:00
sd.c [SCSI] sd, sr: do not emit change event at device add 2008-03-19 11:28:56 -05:00
ses.c [SCSI] ses: fix data corruption 2008-02-18 08:57:15 -06:00
sg.c Convert SG from nopage to fault. 2008-02-07 19:09:22 -08:00
sgiwd93.c [SCSI] WD33C93: let platform stub override no_sync/fast/dma_mode 2008-04-07 12:19:01 -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] sni_53c710: Cleanup 2007-07-14 19:12:15 -05:00
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
sr.c [SCSI] sd, sr: do not emit change event at device add 2008-03-19 11:28:56 -05:00
sr.h [SCSI] sr: fix test unit ready responses 2008-02-07 18:02:44 -06:00
st_options.h [SCSI] st: add option to use SILI in variable block reads 2008-04-07 12:15:39 -05:00
st.c [SCSI] st: rename flush_write_buffer() 2008-04-16 09:23:46 -05:00
st.h [SCSI] st: add option to use SILI in variable block reads 2008-04-07 12:15:39 -05:00
stex.c [SCSI] stex: use scsi_build_sense_buffer 2008-04-07 12:19:02 -05:00
sun3_NCR5380.c [SCSI] atari_NCR5380, sun3_NCR5380: operator precedence fix 2008-01-11 18:28:57 -06:00
sun3_scsi_vme.c [SCSI] sun3_scsi_vme: add MODULE_LICENSE 2008-04-16 09:28:11 -05:00
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
sun3x_esp.c [SCSI] sun3x_esp: convert to esp_scsi 2008-02-07 18:02:33 -06:00
sun_esp.c [SCSI] esp: use shost_priv 2007-05-31 17:30:04 -04:00
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 data direction bug 2008-02-07 18:02:44 -06:00
ultrastor.c [SCSI] remove use_sg_chaining 2008-01-30 13:14:02 -06:00
ultrastor.h
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
zorro7xx.c m68k: zorro7xx needs <asm/amigahw.h> 2007-11-29 09:24:52 -08:00