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f5ce815f34
linux/drivers
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Bodo Stroesser f5ce815f34 scsi: target: tcmu: Support DATA_BLOCK_SIZE = N * PAGE_SIZE 
Change tcmu to support DATA_BLOCK_SIZE being a multiple of PAGE_SIZE. There
are two reasons why one would like to have a bigger DATA_BLOCK_SIZE:

 1) If userspace - e.g. due to data compression, encryption or
    deduplication - needs to have receive or transmit data in a consecutive
    buffer, we can define DATA_BLOCK_SIZE to the maximum size of a SCSI
    READ/WRITE to enforce that userspace sees just one consecutive
    buffer. That way we can avoid the need for doing data copy in
    userspace.

 2) Using a bigger data block size can speed up command processing in
    tcmu. The number of free data blocks to look up in bitmap is reduced
    substantially. The lookup for data pages in radix_tree can be done more
    efficiently if there are multiple pages in a data block. The maximum
    number of IOVs to set up is lower so cmd entries in the ring become
    smaller.

Link: https://lore.kernel.org/r/20210324195758.2021-4-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-12 22:40:55 -04:00
..
accessibility Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
acpi Additional ACPI updates for v5.12-rc1 2021-02-25 12:03:13 -08:00
amba
android
ata
atm atm: idt77252: fix build broken on amd64 2021-02-15 12:36:27 -08:00
auxdisplay treewide: Miguel has moved 2021-02-26 09:41:03 -08:00
base RISC-V Patches for the 5.12 Merge Window 2021-02-26 10:28:35 -08:00
bcma
block block-5.12-2021-02-27 2021-02-28 11:23:38 -08:00
bluetooth TTY/Serial driver changes for 5.12-rc1 2021-02-20 21:28:04 -08:00
bus Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
cdrom
char Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
clk RISC-V Patches for the 5.12 Merge Window 2021-02-26 10:28:35 -08:00
clocksource A small set of clockevent fixes which fell through the cracks 2021-02-22 14:11:36 -08:00
connector
counter
cpufreq Simple Firmware Interface (SFI) support removal for v5.12-rc1 2021-02-24 10:35:29 -08:00
cpuidle
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-02-21 17:23:56 -08:00
cxl cxl/mem: Fix potential memory leak 2021-02-22 14:44:39 -08:00
dax Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-02-27 08:07:12 -08:00
dca
devfreq Merge branches 'pm-devfreq' and 'pm-tools' 2021-02-15 17:02:04 +01:00
dio
dma dmaengine updates for v5.12-rc1 2021-02-23 15:05:10 -08:00
dma-buf dma-fence: allow signaling drivers to set fence timestamp 2021-02-24 21:05:28 +05:30
edac Merge branch 'edac-misc' into edac-updates-for-v5.12 2021-02-15 10:06:58 +01:00
eisa
extcon
firewire
firmware Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
fpga
fsi
gnss
gpio Driver core / debugfs update for 5.12-rc1 2021-02-24 10:13:55 -08:00
gpu A handful of late-arriving documentation fixes, nothing all that notable. 2021-02-26 14:21:18 -08:00
greybus
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2021-02-23 14:52:22 -08:00
hsi
hv mm/memory_hotplug: MEMHP_MERGE_RESOURCE -> MHP_MERGE_RESOURCE 2021-02-26 09:41:00 -08:00
hwmon Devicetree updates for v5.12: 2021-02-22 10:05:12 -08:00
hwspinlock
hwtracing ARM updates for 5.12-rc1: 2021-02-22 14:27:07 -08:00
i2c i2c: exynos5: Preserve high speed master code 2021-02-26 11:47:42 +01:00
i3c I3C for 5.12 2021-02-22 09:52:55 -08:00
ide ide-5.11-2021-02-28 2021-02-28 15:48:25 -08:00
idle
iio - Use the newly introduced 'hot' and 'critical' ops for the acpi 2021-02-22 09:39:11 -08:00
infiniband scsi: target: core: Add gfp_t arg to target_cmd_init_cdb() 2021-03-04 17:37:02 -05:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2021-02-23 14:56:23 -08:00
interconnect
iommu dma-mapping updates for 5.12: 2021-02-24 09:54:24 -08:00
ipack
irqchip irqchip updates for Linux 5.12: 2021-02-15 15:41:56 +01:00
isdn
leds Updates for 5.12-rc1. Besides usual fixes and new drivers, we are 2021-02-26 13:56:40 -08:00
lightnvm lightnvm: pblk: Replace guid_copy() with export_guid()/import_guid() 2021-02-14 21:27:24 -07:00
macintosh
mailbox mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer 2021-02-22 13:34:27 -06:00
mcb
md block-5.12-2021-02-27 2021-02-28 11:23:38 -08:00
media Fixes around VM_FPNMAP and follow_pfn 2021-02-22 17:45:02 -08:00
memory Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
memstick
message scsi: message: fusion: Use BUG_ON instead of if condition followed by BUG 2021-04-05 23:34:36 -04:00
mfd Simple Firmware Interface (SFI) support removal for v5.12-rc1 2021-02-24 10:35:29 -08:00
misc pci-v5.12-changes 2021-02-25 09:56:08 -08:00
mmc Merge branch 'stable/for-linus-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb 2021-02-26 13:59:32 -08:00
most
mtd This pull request contains changes (actually just fixes) for UBIFS 2021-02-21 13:57:08 -08:00
mux
net virtio: features, fixes 2021-02-25 12:21:08 -08:00
nfc Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
ntb NTB: Add support for EPF PCI Non-Transparent Bridge 2021-02-23 14:12:53 -06:00
nubus
nvdimm libnvdimm + device-dax for 5.12 2021-02-24 09:35:54 -08:00
nvme block-5.12-2021-02-27 2021-02-28 11:23:38 -08:00
nvmem
of Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
opp opp: Don't skip freq update for different frequency 2021-02-18 12:31:08 +05:30
parisc
parport
pci pci-v5.12-changes 2021-02-25 09:56:08 -08:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2021-02-26 13:54:43 -08:00
perf IOMMU Updates for Linux v5.12 2021-02-22 10:31:29 -08:00
phy
pinctrl RISC-V Patches for the 5.12 Merge Window 2021-02-26 10:28:35 -08:00
platform Additional ACPI updates for v5.12-rc1 2021-02-25 12:03:13 -08:00
pnp
power
powercap powercap: intel_rapl: Use topology interface in rapl_init_domains() 2021-02-12 16:53:01 +01:00
pps
ps3
ptp ptp: ptp_clockmatrix: clean-up - parenthesis around a == b are unnecessary 2021-02-17 13:49:26 -08:00
pwm pwm: Changes for v5.12-rc1 2021-02-25 12:23:49 -08:00
rapidio
ras
regulator - Core Frameworks 2021-02-22 09:29:42 -08:00
remoteproc remoteproc: qcom: pas: Add SM8350 PAS remoteprocs 2021-02-11 12:52:18 -06:00
reset RISC-V Patches for the 5.12 Merge Window 2021-02-26 10:28:35 -08:00
rpmsg
rtc Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-02-27 08:07:12 -08:00
s390 Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-02-27 08:07:12 -08:00
sbus
scsi Merge branch '5.12/scsi-fixes' into 5.13/scsi-staging 2021-04-12 21:41:54 -04:00
sh
siox
slimbus
soc OpenRISC updates for 5.12 2021-02-26 14:16:06 -08:00
soundwire soundwire: intel: fix possible crash when no device is detected 2021-02-11 10:49:52 +05:30
spi powerpc updates for 5.12 2021-02-22 14:34:00 -08:00
spmi spmi: spmi-pmic-arb: Fix hw_irq overflow 2021-02-12 12:26:46 +01:00
ssb
staging Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2021-02-27 08:07:12 -08:00
target scsi: target: tcmu: Support DATA_BLOCK_SIZE = N * PAGE_SIZE 2021-04-12 22:40:55 -04:00
tc
tee
thermal - Use the newly introduced 'hot' and 'critical' ops for the acpi 2021-02-22 09:39:11 -08:00
thunderbolt
tty Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
uio
usb scsi: target: usb: gadget: Convert to new submission API 2021-03-04 17:37:01 -05:00
vdpa vdpa/mlx5: fix param validation in mlx5_vdpa_get_config() 2021-02-23 07:52:59 -05:00
vfio VFIO updates for v5.12-rc1 2021-02-24 10:43:40 -08:00
vhost scsi: target: vhost-scsi: Use LIO wq cmd submission helper 2021-03-04 17:37:02 -05:00
video drm fixes for 5.12-rc1 + msm-next 2021-02-25 12:10:22 -08:00
virt
virtio Merge branch 'akpm' (patches from Andrew) 2021-02-26 09:50:09 -08:00
visorbus
vlynq
vme
w1
watchdog Char/Misc driver patches for 5.12-rc1 2021-02-24 10:25:37 -08:00
xen scsi: target: core: Add gfp_t arg to target_cmd_init_cdb() 2021-03-04 17:37:02 -05:00
zorro
Kconfig cxl/mem: Introduce a driver for CXL-2.0-Type-3 endpoints 2021-02-16 20:36:38 -08:00
Makefile Simple Firmware Interface (SFI) support removal for v5.12-rc1 2021-02-24 10:35:29 -08:00