Christoph Hellwig c53c6d6a68 scatterlist: allow chaining to preallocated chunks ... Blk-mq drivers usually preallocate their S/G list as part of the request, but if we want to support the very large S/G lists currently supported by the SCSI code that would tie up a lot of memory in the preallocated request pool. Add support to the scatterlist code so that it can initialize a S/G list that uses a preallocated first chunks and dynamically allocated additional chunks. That way the scsi-mq code can preallocate a first page worth of S/G entries as part of the request, and dynamically extend the S/G list when needed. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Webb Scales <webbnh@hp.com> Acked-by: Jens Axboe <axboe@kernel.dk> Tested-by: Bart Van Assche <bvanassche@acm.org> Tested-by: Robert Elliott <elliott@hp.com>		2014-07-25 17:16:21 -04:00
..
aacraid	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
aic7xxx	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
aic94xx	…
arcmsr	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
arm	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
be2iscsi	be2iscsi: remove potential junk pointer free	2014-06-25 13:29:05 +02:00
bfa	…
bnx2fc	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
bnx2i	…
csiostor	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
cxgbi	scsi: use 64-bit value for 'max_luns'	2014-07-17 22:07:38 +02:00
device_handler	block: add blk_rq_set_block_pc()	2014-06-06 07:57:37 -06:00
dpt	…
esas2r	…
fcoe	…
fnic	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
ibmvscsi	ibmvstgt: remove	2014-07-17 22:07:43 +02:00
isci	…
libfc	…
libsas	scsi: convert host_busy to atomic_t	2014-07-25 07:43:43 -04:00
lpfc	scsi: use 64-bit value for 'max_luns'	2014-07-17 22:07:38 +02:00
megaraid	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
mpt2sas	mpt2sas: Add free smids to the head, not tail of list	2014-05-28 18:13:24 +02:00
mpt3sas	scsi: use 64-bit value for 'max_luns'	2014-07-17 22:07:38 +02:00
mvsas	drivers: scsi: mvsas: fix compiling issue by adding 'MVS_' for "enum pci_interrupt_cause"	2014-06-20 08:22:39 +08:00
osd	block: add blk_rq_set_block_pc()	2014-06-06 07:57:37 -06:00
pcmcia	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
pm8001	pm8001: Fix potential null pointer dereference and memory leak.	2014-06-25 13:29:05 +02:00
qla2xxx	scsi: use 64-bit value for 'max_luns'	2014-07-17 22:07:38 +02:00
qla4xxx	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
sym53c8xx_2	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
ufs	scsi: ufs: Improve UFS fatal error handling	2014-05-28 12:25:13 +02:00
.gitignore	…
3w-9xxx.c	…
3w-9xxx.h	…
3w-sas.c	…
3w-sas.h	…
3w-xxxx.c	…
3w-xxxx.h	…
53c700.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
53c700.h	…
53c700.scr	…
53c700_d.h_shipped	…
BusLogic.c	…
BusLogic.h	…
FlashPoint.c	…
Kconfig	tgt: removal	2014-07-17 22:07:44 +02:00
Makefile	tgt: removal	2014-07-17 22:07:44 +02:00
NCR53c406a.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
NCR5380.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
NCR5380.h	scsi/NCR5380: dprintk macro	2014-05-28 18:14:16 +02:00
NCR_D700.c	…
NCR_D700.h	…
NCR_Q720.c	…
NCR_Q720.h	…
a100u2w.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
a100u2w.h	…
a2091.c	…
a2091.h	…
a3000.c	…
a3000.h	…
a4000t.c	…
advansys.c	scsi: convert host_busy to atomic_t	2014-07-25 07:43:43 -04:00
aha152x.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
aha152x.h	…
aha1542.c	…
aha1542.h	…
aha1740.c	…
aha1740.h	…
atari_NCR5380.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
atari_scsi.c	SCSI for-linus on 20140609	2014-06-09 18:54:06 -07:00
atari_scsi.h	scsi/NCR5380: remove unused macro definitions	2014-05-28 12:11:08 +02:00
atp870u.c	…
atp870u.h	…
bvme6000_scsi.c	…
ch.c	scsi: Implement ch_printk()	2014-07-17 22:07:40 +02:00
constants.c	…
dc395x.c	scsi: use 64-bit value for 'max_luns'	2014-07-17 22:07:38 +02:00
dc395x.h	…
dmx3191d.c	…
dpt_i2o.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
dpti.h	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
dtc.c	scsi/NCR5380: fix and standardize NDEBUG macros	2014-05-28 12:10:43 +02:00
dtc.h	…
eata.c	scsi: use 64-bit value for 'max_luns'	2014-07-17 22:07:38 +02:00
eata_generic.h	…
eata_pio.c	…
eata_pio.h	…
esp_scsi.c	…
esp_scsi.h	…
fdomain.c	…
fdomain.h	…
g_NCR5380.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
g_NCR5380.h	scsi/NCR5380: remove old CVS keywords	2014-05-28 12:05:37 +02:00
g_NCR5380_mmio.c	…
gdth.c	…
gdth.h	…
gdth_ioctl.h	…
gdth_proc.c	…
gdth_proc.h	…
gvp11.c	…
gvp11.h	…
hosts.c	scsi: use dev_printk variants where possible	2014-07-17 22:07:42 +02:00
hpsa.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
hpsa.h	hpsa: fix event filtering to prevent excessive rescans with old firmware	2014-06-02 09:54:59 +02:00
hpsa_cmd.h	hpsa: fix handling of hpsa_volume_offline return value	2014-06-02 09:55:02 +02:00
hptiop.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
hptiop.h	…
imm.c	…
imm.h	…
in2000.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
in2000.h	…
initio.c	…
initio.h	…
ipr.c	…
ipr.h	…
ips.c	…
ips.h	…
iscsi_boot_sysfs.c	…
iscsi_tcp.c	…
iscsi_tcp.h	…
jazz_esp.c	…
lasi700.c	…
libiscsi.c	scsi: convert host_busy to atomic_t	2014-07-25 07:43:43 -04:00
libiscsi_tcp.c	…
mac53c94.c	…
mac53c94.h	…
mac_esp.c	…
mac_scsi.c	scsi/NCR5380: fix and standardize NDEBUG macros	2014-05-28 12:10:43 +02:00
mac_scsi.h	scsi/NCR5380: remove old CVS keywords	2014-05-28 12:05:37 +02:00
megaraid.c	scsi: use 64-bit value for 'max_luns'	2014-07-17 22:07:38 +02:00
megaraid.h	…
mesh.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
mesh.h	…
mvme16x_scsi.c	…
mvme147.c	…
mvme147.h	…
mvumi.c	…
mvumi.h	…
ncr53c8xx.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
ncr53c8xx.h	scsi: Remove CONFIG_SCSI_MULTI_LUN	2014-07-17 22:07:35 +02:00
nsp32.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
nsp32.h	…
nsp32_debug.c	…
nsp32_io.h	…
osst.c	block: add blk_rq_set_block_pc()	2014-06-06 07:57:37 -06:00
osst.h	…
osst_detect.h	…
osst_options.h	…
pas16.c	…
pas16.h	scsi/NCR5380: remove redundant HOSTS_C macro tests	2014-05-28 12:05:36 +02:00
pmcraid.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
pmcraid.h	…
ppa.c	…
ppa.h	…
ps3rom.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
qla1280.c	…
qla1280.h	…
qlogicfas.c	…
qlogicfas408.c	…
qlogicfas408.h	…
qlogicpti.c	scsi: convert host_busy to atomic_t	2014-07-25 07:43:43 -04:00
qlogicpti.h	…
raid_class.c	…
script_asm.pl	…
scsi.c	scsi: fix the {host,target,device}_blocked counter mess	2014-07-25 17:15:48 -04:00
scsi.h	…
scsi_debug.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
scsi_devinfo.c	…
scsi_error.c	scsi: convert host_busy to atomic_t	2014-07-25 07:43:43 -04:00
scsi_ioctl.c	scsi: use dev_printk() variants for ioctl	2014-07-17 22:07:41 +02:00
scsi_lib.c	scatterlist: allow chaining to preallocated chunks	2014-07-25 17:16:21 -04:00
scsi_lib_dma.c	…
scsi_logging.h	…
scsi_module.c	…
scsi_netlink.c	…
scsi_pm.c	…
scsi_priv.h	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
scsi_proc.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
scsi_sas_internal.h	…
scsi_scan.c	scsi: use dev_printk variants where possible	2014-07-17 22:07:42 +02:00
scsi_sysctl.c	scsi: convert use of typedef ctl_table to struct ctl_table	2014-06-06 16:08:16 -07:00
scsi_sysfs.c	scsi: fix the {host,target,device}_blocked counter mess	2014-07-25 17:15:48 -04:00
scsi_trace.c	…
scsi_transport_api.h	…
scsi_transport_fc.c	tgt: removal	2014-07-17 22:07:44 +02:00
scsi_transport_iscsi.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
scsi_transport_sas.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
scsi_transport_spi.c	…
scsi_transport_srp.c	tgt: removal	2014-07-17 22:07:44 +02:00
scsi_typedefs.h	…
scsicam.c	…
sd.c	sd: split sd_init_command	2014-07-17 22:16:29 +02:00
sd.h	sd: Limit transfer length	2014-07-17 22:07:33 +02:00
sd_dif.c	…
ses.c	…
sg.c	scsi: convert device_busy to atomic_t	2014-07-25 07:43:45 -04:00
sgiwd93.c	…
sim710.c	…
sni_53c710.c	…
sr.c	scsi: set sc_data_direction in common code	2014-07-17 22:11:41 +02:00
sr.h	scsi: Implement sr_printk()	2014-07-17 22:07:39 +02:00
sr_ioctl.c	scsi: Implement sr_printk()	2014-07-17 22:07:39 +02:00
sr_vendor.c	scsi: Implement sr_printk()	2014-07-17 22:07:39 +02:00
st.c	scsi: Implement st_printk()	2014-07-17 22:07:41 +02:00
st.h	…
st_options.h	…
stex.c	…
storvsc_drv.c	…
sun3_NCR5380.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
sun3_scsi.c	scsi/NCR5380: merge sun3_scsi_vme.c into sun3_scsi.c	2014-05-28 12:16:28 +02:00
sun3_scsi.h	scsi/NCR5380: reduce depth of sun3_scsi nested includes	2014-05-28 12:11:33 +02:00
sun3_scsi_vme.c	scsi/NCR5380: merge sun3_scsi_vme.c into sun3_scsi.c	2014-05-28 12:16:28 +02:00
sun3x_esp.c	…
sun_esp.c	…
sym53c416.c	…
sym53c416.h	…
t128.c	scsi/NCR5380: remove old CVS keywords	2014-05-28 12:05:37 +02:00
t128.h	scsi/NCR5380: remove old CVS keywords	2014-05-28 12:05:37 +02:00
tmscsim.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
tmscsim.h	…
u14-34f.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
ultrastor.c	…
ultrastor.h	…
virtio_scsi.c	virtio-scsi: fix various bad behavior on aborted requests	2014-06-25 13:29:33 +02:00
vmw_pvscsi.c	…
vmw_pvscsi.h	…
wd33c93.c	scsi: use 64-bit LUNs	2014-07-17 22:07:37 +02:00
wd33c93.h	…
wd7000.c	…
zalon.c	…
zorro7xx.c	…