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android_kernel_xiaomi_sm8450/drivers
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Damien Le Moal d2e428e49e scsi: sd_zbc: Reduce boot device scan and revalidate time 
Handling checks of ZBC device capacity using the max_lba field of the
REPORT ZONES command reply for disks with rc_basis == 0 can be done
using the same report zones command reply used to check the "same"
field.

Avoid executing a report zones command solely to check the disk capacity
by merging sd_zbc_check_capacity() into sd_zbc_check_zone_size() and
renaming that function to sd_zbc_check_zones(). This removes a costly
execution of a full report zones command and so reduces device scan
duration at boot time as well as the duration of disk revalidate calls.

Furthermore, setting the partial report bit in the REPORT ZONES command
cdb can significantly reduce this command execution time as the device
does not have to count and report the total number of zones that could
be reported assuming a large enough reply buffer. A non-partial zone
report is necessary only for the first execution of report zones used to
check the same field value (to ensure that this value applies to all
zones of the disk). All other calls to sd_zbc_report_zones() can use a
partial report to reduce execution time.

Using a 14 TB ZBC disk, these simple changes reduce device scan time at
boot from about 3.5s down to about 900ms. Disk revalidate times are also
reduced from about 450ms down to 230ms.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-10-25 11:17:39 -06:00
..
accessibility
acpi pci-v4.20-changes 2018-10-25 06:50:48 -07:00
amba
android android: binder: fix the race mmap and alloc_new_buf_locked 2018-09-12 09:18:29 +02:00
ata pci-v4.20-changes 2018-10-25 06:50:48 -07:00
atm atm: zatm: Fix empty body Clang warnings 2018-10-18 15:39:10 -07:00
auxdisplay gpiolib: Pass array info to get/set array functions 2018-09-13 11:16:54 +02:00
base Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 15:00:03 +01:00
bcma
block skd: fix unchecked return values 2018-10-25 11:17:39 -06:00
bluetooth Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
bus This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
cdrom cdrom: remove set but not used variable 'tocuse' 2018-10-25 11:17:39 -06:00
char Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
clk One fix for the Allwinner A10 SoC's audio PLL that wasn't properly set 2018-10-17 13:40:10 +02:00
clocksource arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
connector
cpufreq Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 16:16:40 +01:00
cpuidle cpuidle: menu: Avoid computations when result will be discarded 2018-10-18 09:34:13 +02:00
crypto pci-v4.20-changes 2018-10-25 06:50:48 -07:00
dax device-dax: Add missing address_space_operations 2018-09-22 09:07:33 -07:00
dca
devfreq PM / devfreq: remove redundant null pointer check before kfree 2018-10-02 10:16:41 +09:00
dio
dma pci-v4.20-changes 2018-10-25 06:50:48 -07:00
dma-buf
edac - amd64_edac: AMD family 0x17, models 0x10-0x2f support (Michael Jin) 2018-10-25 06:40:00 -07:00
eisa
extcon
firewire FireWire: clean up core-transaction.c kernel-doc 2018-09-06 09:41:09 -06:00
firmware EFI updates for v4.20: 2018-09-27 16:58:49 +02:00
fmc
fpga fpga: bridge: fix obvious function documentation error 2018-09-30 08:49:55 -07:00
fsi fsi: sbefifo: Bump max command length 2018-08-08 15:44:47 +10:00
gnss
gpio pci-v4.20-changes 2018-10-25 06:50:48 -07:00
gpu Second pull request for v4.19: 2018-10-20 12:26:26 +10:00
hid Merge branch 'for-4.20/multitouch' into for-linus 2018-10-23 13:36:28 +02:00
hsi
hv Drivers: hv: vmbus: Use get/put_cpu() in vmbus_connect() 2018-09-30 08:49:55 -07:00
hwmon Lots of small changes to the IPMI driver. Most of the changes 2018-10-23 09:42:05 +01:00
hwspinlock hwspinlock: Fix incorrect return pointers 2018-07-30 20:54:51 -07:00
hwtracing intel_th: pci: Add Ice Lake PCH support 2018-09-18 16:08:38 +02:00
i2c This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
ide block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
idle Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
iio - New Drivers 2018-10-25 06:19:15 -07:00
infiniband pci-v4.20-changes 2018-10-25 06:50:48 -07:00
input - New Drivers 2018-10-25 06:19:15 -07:00
iommu Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:05:28 +01:00
ipack
irqchip irqchip/gic-v3-its: Cap lpi_id_bits to reduce memory footprint 2018-09-06 20:31:59 +02:00
isdn Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
leds leds: sc27xx: Add pattern_set/clear interfaces for LED controller 2018-10-11 21:59:11 +02:00
lightnvm lightnvm: pblk: guarantee that backpointer is respected on writer stall 2018-10-09 08:25:08 -06:00
macintosh macintosh: therm_windtunnel: drop using attach_adapter 2018-08-24 14:42:42 +02:00
mailbox mailbox: PCC: handle parse error 2018-09-10 12:54:02 +02:00
mcb
md for-4.20/block-20181021 2018-10-22 17:46:08 +01:00
media media: v4l: event: Prevent freeing event subscriptions while accessed 2018-10-03 06:32:51 -04:00
memory memory: ti-aemif: fix a potential NULL-pointer dereference 2018-09-06 10:04:07 -07:00
memstick block: genhd: add 'groups' argument to device_add_disk 2018-09-28 08:30:28 -06:00
message scsi: mptfusion: Remove unnecessary parentheses 2018-09-28 02:13:33 -04:00
mfd - New Drivers 2018-10-25 06:19:15 -07:00
misc Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-10-24 11:22:39 +01:00
mmc Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
mtd SPI NOR changes: 2018-10-23 01:09:22 +01:00
mux This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
net pci-v4.20-changes 2018-10-25 06:50:48 -07:00
nfc
ntb
nubus
nvdimm libnvdimm for 4.20 2018-10-25 06:31:56 -07:00
nvme pci-v4.20-changes 2018-10-25 06:50:48 -07:00
nvmem
of First batch of dma-mapping changes for 4.20: 2018-10-22 18:16:03 +01:00
opp PM / OPP: _of_add_opp_table_v2(): increment count only if OPP is added 2018-10-04 09:21:36 +05:30
oprofile
parisc parisc: Add alternative coding infrastructure 2018-10-17 17:22:26 +02:00
parport Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pci pci-v4.20-changes 2018-10-25 06:50:48 -07:00
pcmcia Merge branch 'pcmcia-next' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux 2018-10-23 10:22:33 +01:00
perf arm64 updates for 4.20: 2018-10-22 17:30:06 +01:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-10-24 06:47:44 +01:00
pinctrl This is the bulk of GPIO changes for the v4.20 series: 2018-10-23 08:45:05 +01:00
platform pci-v4.20-changes 2018-10-25 06:50:48 -07:00
pnp
power power: max8925: mark expected switch fall-through 2018-10-21 21:33:35 +02:00
powercap Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 13:32:18 +01:00
pps
ps3
ptp ptp: ptp_dte: simplify getting .driver_data 2018-10-22 19:48:35 -07:00
pwm pwm: mediatek: Add MT7628 support 2018-08-20 11:36:07 +02:00
rapidio drivers/rapidio/devices/rio_mport_cdev.c: remove redundant pointer md 2018-08-22 10:52:51 -07:00
ras
regulator regulator: Regulator updates for next release 2018-10-23 01:54:44 +01:00
remoteproc remoteproc/davinci: use the reset framework 2018-08-16 17:39:55 -07:00
reset reset: imx7: Add PCIE_CTRL_APPS_TURNOFF 2018-10-05 09:56:19 +01:00
rpmsg rpmsg: Add compat ioctl for rpmsg char driver 2018-07-30 23:40:23 -07:00
rtc RTC for 4.19 2018-08-20 16:30:27 -07:00
s390 pci-v4.20-changes 2018-10-25 06:50:48 -07:00
sbus oradax: remove redundant null check before kfree 2018-10-07 22:42:00 -07:00
scsi scsi: sd_zbc: Reduce boot device scan and revalidate time 2018-10-25 11:17:39 -06:00
sfi
sh sh: introduce a sh_cacheop_vaddr helper 2018-08-02 13:54:06 +02:00
siox
slimbus
sn
soc net/kconfig: Make QCOM_QMI_HELPERS available when COMPILE_TEST 2018-10-24 08:11:35 +01:00
soundwire soundwire: Fix acquiring bus lock twice during master release 2018-08-27 09:49:48 +05:30
spi - New Drivers 2018-10-25 06:19:15 -07:00
spmi
ssb ssb: chipcommon: fix fall-through annotation 2018-10-05 11:37:20 +03:00
staging Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
target SCSI misc on 20181024 2018-10-25 07:40:30 -07:00
tc
tee ARM: SoC driver updates 2018-08-23 13:52:46 -07:00
thermal x86/cpu: Sanitize FAM6_ATOM naming 2018-10-02 10:14:32 +02:00
thunderbolt thunderbolt: Initialize after IOMMUs 2018-10-02 10:51:16 -07:00
tty - New Drivers 2018-10-25 06:19:15 -07:00
uio Char/Misc fix for 4.19-rc1 2018-08-19 09:30:44 -07:00
usb Merge branch 'work.tty-ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-10-24 14:43:41 +01:00
uwb
vfio powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
vhost net: vhost: remove bad code line 2018-10-07 21:31:32 -07:00
video - Old Drivers 2018-10-25 06:21:28 -07:00
virt
virtio virtio, vhost: fixes, tweaks 2018-08-24 08:45:19 -07:00
visorbus
vlynq
vme
w1 power supply and reset changes for the v4.19 series 2018-08-21 18:06:27 -07:00
watchdog include/linux/compiler*.h: make compiler-*.h mutually exclusive 2018-08-22 17:31:34 -07:00
xen Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-10-23 17:54:58 +01:00
zorro
Kconfig
Makefile Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00