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Sheng Yong 1ed753392f f2fs: introduce sysfs readdir_ra to readahead inode block in readdir 
This patch introduces a sysfs interface readdir_ra to enable/disable
readaheading inode block in f2fs_readdir. When readdir_ra is enabled,
it improves the performance of "readdir + stat".

For 300,000 files:
	time find /data/test > /dev/null
disable readdir_ra: 1m25.69s real  0m01.94s user  0m50.80s system
enable  readdir_ra: 0m18.55s real  0m00.44s user  0m15.39s system

Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-30 19:29:40 -08:00
..
80211
docs-rst: sphinxify 802.11 documentation
2016-10-11 16:19:17 -06:00
ABI
f2fs: introduce sysfs readdir_ra to readahead inode block in readdir
2018-01-30 19:29:40 -08:00
accounting
tools: move accounting tool from Documentation
2016-09-23 13:07:15 -06:00
acpi
Merge branches 'acpi-button', 'acpi-battery' and 'acpi-doc'
2016-10-02 01:40:20 +02:00
aoe
…
arm
Merge tag 'linux-kselftest-4.9-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
2016-10-14 15:17:12 -07:00
arm64
arm64: documentation: document tagged pointer stack constraints
2017-05-25 15:44:45 +02:00
auxdisplay
samples: move auxdisplay example code from Documentation
2016-09-23 11:52:32 -06:00
backlight
…
blackfin
samples: move blackfin gptimers-example from Documentation
2016-10-10 07:12:02 -06:00
block
block: remove remnant refs to hardsect
2016-09-14 08:44:57 -06:00
blockdev
zram: cosmetic: cleanup documentation
2016-07-26 16:19:19 -07:00
bus-devices
…
cdrom
…
cgroup-v1
Merge tag 'doc-4.8-fixes' of git://git.lwn.net/linux
2016-08-07 10:23:17 -04:00
cma
…
connector
samples: connector: from Documentation to samples directory
2016-04-28 07:47:35 -06:00
console
…
cpu-freq
cpufreq-stats: Minor documentation fix
2016-09-08 23:05:07 +02:00
cpuidle
…
cris
…
crypto
crypto: doc - Fix typo
2016-05-31 16:41:55 +08:00
dev-tools
mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping
2016-10-11 15:06:33 -07:00
development-process
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
device-mapper
dm raid: fix activation of existing raid4/10 devices
2016-10-17 16:41:31 -04:00
devicetree
net: phy: dp83867: allow RGMII_TXID/RGMII_RXID interface types
2017-07-05 14:40:27 +02:00
dmaengine
dmaengine: documentation to the new callback mechanism
2016-08-08 08:11:42 +05:30
DocBook
Merge tag 'docs-4.9-2' of git://git.lwn.net/linux
2016-10-14 14:11:22 -07:00
driver-api
docs: Don't format internal MPT docs
2016-09-06 09:15:48 -06:00
driver-model
Merge tag 'for-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
2016-10-06 18:21:15 -07:00
early-userspace
…
EDID
…
extcon
…
fault-injection
…
fb
Documentation: fb: fix spelling mistakes
2016-05-10 12:05:27 +03:00
features
Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API
2016-10-13 17:19:19 +02:00
filesystems
f2fs: support journalled quota
2017-09-21 13:55:36 -07:00
firmware_class
Documentation: fix common spelling mistakes
2016-04-28 07:51:59 -06:00
fmc
…
fpga
…
frv
…
gpio
gpio/board.txt: point to gpiod_set_value
2016-10-20 14:14:11 +02:00
gpu
Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux
2016-10-11 18:12:22 -07:00
hid
Documentation: HID: Intel ISH HID document
2016-08-17 11:13:07 +02:00
hwmon
hwmon: (max6650) Allow fan shutdown and initial rpm target
2016-09-08 21:34:17 -07:00
i2c
i2c: Documentation: i2c-topology: fix minor whitespace nit
2016-11-10 21:18:56 +01:00
ia64
selftests: move ia64 tests from Documentation/ia64
2016-09-20 09:58:12 -06:00
ide
…
iio
iio: Documentation: Correct the path used to create triggers.
2016-10-01 00:49:58 -06:00
infiniband
IB/hfi1: Document new sysfs entries for hfi1 driver
2016-10-02 08:42:19 -04:00
input
Input: ALPS - add V8 protocol documentation
2016-10-04 11:47:02 -07:00
ioctl
doc: ioctl: Add some clarifications to botching-up-ioctls
2016-09-06 06:00:22 -06:00
isdn
isdn: i4l: move active-isdn drivers to staging
2016-03-05 15:00:38 -08:00
ja_JP
Documentatio: HOWTO: remove regression postings info from translations
2016-04-16 10:49:08 -06:00
kbuild
Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
2016-10-14 14:26:58 -07:00
kdump
Documentation: kdump: Add description of enable multi-cpus support
2016-09-20 18:02:54 -06:00
ko_KR
locking/Documentation: Add Korean translation
2016-08-12 08:24:14 +02:00
laptops
tools: move laptops dslm tool from Documentation
2016-09-23 13:07:21 -06:00
leds
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
2016-10-04 10:25:53 -07:00
livepatch
Documentation: livepatch: add section about arch-specific code
2016-08-18 23:41:56 +02:00
locking
locking/lglock: Remove lglock implementation
2016-09-22 15:25:56 +02:00
m68k
…
media
videodev2.h: go back to limited range Y'CbCr for SRGB and, ADOBERGB
2017-02-23 17:44:37 +01:00
memory-devices
…
metag
…
mic
samples: move mic/mpssd example code from Documentation
2016-09-20 12:38:48 -06:00
mips
…
misc-devices
samples: move misc-devices/mei example code from Documentation
2016-09-23 11:51:43 -06:00
mmc
mmc: core: Extend sysfs with DSR register
2016-07-25 10:34:51 +02:00
mn10300
…
mtd
…
namespaces
…
netlabel
…
networking
netfilter: fix nf_conntrack_helper documentation
2016-11-24 12:50:24 +01:00
nfc
…
nios2
…
nvdimm
libnvdimm, btt: update the usage section in Documentation
2016-06-17 16:23:23 -07:00
nvmem
…
parisc
…
PCI
Merge tag 'pci-v4.9-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2016-10-07 11:46:37 -07:00
pcmcia
tools: move pcmcia crc32hash tool from Documentation
2016-09-23 13:07:27 -06:00
perf
perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver
2016-09-15 11:20:55 -07:00
phy
…
platform
…
power
Merge tag 'for-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
2016-10-06 18:21:15 -07:00
powerpc
Merge tag 'powerpc-4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2016-10-07 20:19:31 -07:00
pps
Documentation: pps: fix spelling mistake
2016-04-28 07:23:59 -06:00
prctl
selftests: move prctl tests from Documentation/prctl
2016-09-20 09:09:09 -06:00
pti
…
ptp
selftests: move ptp tests from Documentation/ptp
2016-09-20 09:54:38 -06:00
rapidio
rapidio/documentation/mport_cdev: add missing parameter description
2016-09-01 17:52:02 -07:00
RCU
kthread: kthread worker API cleanup
2016-10-11 15:06:33 -07:00
s390
s390/Documentation: improve sort command for trace buffer
2016-06-13 15:58:23 +02:00
scheduler
sched/deadline: Document behavior of sched_yield()
2016-09-10 11:17:41 +02:00
scsi
scsi: g_NCR5380: Stop using scsi_module.c
2016-09-29 21:52:43 -04:00
security
KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()
2017-07-10 13:20:52 -07:00
serial
Documentation: rs485: Do not define manually the ioctl
2016-08-18 11:08:33 -06:00
sh
…
sound
Merge tag 'asoc-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
2016-07-26 10:35:31 +02:00
sphinx
docs: sphinx-extensions: make rstFlatTable work with docutils 0.13
2017-01-09 08:32:18 +01:00
sphinx-static
Merge tag 'docs-4.9' of git://git.lwn.net/linux
2016-10-04 13:54:07 -07:00
spi
Doc: update 00-INDEX files to reflect the runnable code move
2016-10-10 07:12:09 -06:00
sysctl
mnt: Add a per mount namespace limit on the number of mounts
2016-09-30 12:46:48 -05:00
target
target: make close_session optional
2016-05-10 01:19:26 -07:00
thermal
thermal: Add support for hardware-tracked trip points
2016-09-27 14:02:16 +08:00
timers
Doc: update 00-INDEX files to reflect the runnable code move
2016-10-10 07:12:09 -06:00
tpm
tpm: Add documentation for the tpm_vtpm_proxy device driver
2016-06-25 17:26:35 +03:00
trace
Merge tag 'trace-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
2016-10-06 11:48:41 -07:00
usb
Documentation: tiny typo fix in usb/gadget_multi.txt
2016-06-23 08:09:10 -06:00
virtual
KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state
2017-01-09 08:32:22 +01:00
vm
Merge tag 'doc-4.8-fixes' of git://git.lwn.net/linux
2016-08-07 10:23:17 -04:00
w1
w1: add ability to set (SRAM) and store (EEPROM) configuration for temp sensors like DS18B20
2016-05-01 14:37:49 -07:00
watchdog
Merge tag 'linux-kselftest-4.9-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
2016-10-14 15:17:12 -07:00
wimax
…
x86
Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-10-10 11:01:51 -07:00
xtensa
xtensa: cleanup MMU setup and kernel layout macros
2016-07-24 06:33:58 +03:00
zh_CN
docs: deprecate kernel-doc-nano-HOWTO.txt
2016-07-20 16:45:37 -06:00
.gitignore
Add .pyc files to .gitignore
2016-06-30 13:07:33 -06:00
00-INDEX
Doc: update 00-INDEX files to reflect the runnable code move
2016-10-10 07:12:09 -06:00
adding-syscalls.txt
documentation: trivial typo: adding-syscalls.txt: s/statat/fstatat/
2016-04-18 11:31:49 -06:00
applying-patches.txt
docs: Clean up bare :: lines
2016-09-20 18:46:36 -06:00
assoc_array.txt
…
atomic_ops.txt
…
bad_memory.txt
…
basic_profiling.txt
…
bcache.txt
bcache: documentation formatting, edited for clarity, stripe alignment notes
2016-06-23 07:58:38 -06:00
binfmt_misc.txt
binfmt_misc: add F option description to documentation
2016-03-30 14:12:22 -07:00
braille-console.txt
…
bt8xxgpio.txt
…
btmrvl.txt
…
BUG-HUNTING
…
bus-virt-phys-mapping.txt
…
cachetlb.txt
…
cgroup-v2.txt
Merge branch 'for-4.6-ns' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
2016-03-21 10:05:13 -07:00
Changes
docs: Clean up bare :: lines
2016-09-20 18:46:36 -06:00
circular-buffers.txt
…
clk.txt
Documentation: clk: update file names containing referenced structures
2016-08-14 12:12:36 -06:00
CodeOfConflict
URL changed for Linux Foundation TAB
2016-10-01 00:57:13 -06:00
CodingStyle
docs: Remove space-before-label guidance from CodingStyle
2016-09-21 15:53:31 -06:00
conf.py
docs-rst: fix LaTeX \DURole renewcommand with Sphinx 1.3+
2017-01-12 11:39:32 +01:00
cpu-hotplug.txt
…
cpu-load.txt
…
cputopology.txt
topology/sysfs: provide drawer id and siblings attributes
2016-06-13 15:58:27 +02:00
crc32.txt
…
dcdbas.txt
…
debugging-modules.txt
…
debugging-via-ohci1394.txt
…
dell_rbu.txt
…
devices.txt
Documentation: update the devices.txt documentation
2016-03-29 10:11:44 -07:00
digsig.txt
…
DMA-API-HOWTO.txt
Documentation: DMA-API-HOWTO: Fix a typo
2016-09-20 17:58:46 -06:00
DMA-API.txt
dma-mapping: add dma_{map,unmap}_resource
2016-09-26 22:16:41 +05:30
DMA-attributes.txt
dma-mapping: introduce the DMA_ATTR_NO_WARN attribute
2016-10-11 15:06:32 -07:00
dma-buf-sharing.txt
dma-buf: Update docs for SYNC ioctl
2016-03-21 09:26:45 +01:00
DMA-ISA-LPC.txt
…
docutils.conf
doc-rst: add docutils config file
2016-08-14 11:52:40 -06:00
dontdiff
GCC plugin infrastructure
2016-06-07 22:57:10 +02:00
dynamic-debug-howto.txt
…
edac.txt
…
efi-stub.txt
…
eisa.txt
…
email-clients.txt
Documentation/email-clients.txt: convert it to ReST markup
2016-09-21 15:41:50 -06:00
flexible-arrays.txt
…
futex-requeue-pi.txt
…
gcc-plugins.txt
GCC plugin infrastructure
2016-06-07 22:57:10 +02:00
highuid.txt
…
HOWTO
docs: Clean up bare :: lines
2016-09-20 18:46:36 -06:00
hw_random.txt
…
hwspinlock.txt
…
index.rst
docs-rst: sphinxify 802.11 documentation
2016-10-11 16:19:17 -06:00
init.txt
…
initrd.txt
…
intel_txt.txt
…
Intel-IOMMU.txt
iommu/vt-d: Fix link to Intel IOMMU Specification
2016-01-29 12:32:12 +01:00
io_ordering.txt
…
io-mapping.txt
…
iostats.txt
…
IPMI.txt
…
IRQ-affinity.txt
…
IRQ-domain.txt
Documentation/IRQ-domain.txt: Document irq_domain_create_{linear, tree}
2016-03-31 00:32:59 -06:00
IRQ.txt
…
irqflags-tracing.txt
…
isa.txt
Documentation: Add ISA bus driver documentation
2016-05-02 09:32:04 -07:00
isapnp.txt
…
java.txt
…
kernel-doc-nano-HOWTO.txt
docs: deprecate kernel-doc-nano-HOWTO.txt
2016-07-20 16:45:37 -06:00
kernel-docs.txt
Documentation/kernel-docs.txt: reorder based on timestamp
2016-09-20 18:54:42 -06:00
kernel-documentation.rst
Merge tag 'docs-4.9' of git://git.lwn.net/linux
2016-10-04 13:54:07 -07:00
kernel-parameters.txt
mm: larger stack guard gap, between vmas
2017-06-24 07:11:18 +02:00
kernel-per-CPU-kthreads.txt
Documenation: update cgroup's document path
2016-08-03 15:43:58 -06:00
kobject.txt
…
kprobes.txt
Documentation: kprobes: Document jprobes stack copying limitations
2016-08-15 10:19:11 -06:00
kref.txt
…
kselftest.txt
kselftest: kselftest documentation improvement
2016-09-20 08:58:27 -06:00
ldm.txt
…
local_ops.txt
…
lockup-watchdogs.txt
…
logo.gif
…
logo.txt
…
lzo.txt
Documentation: lzo: fix spelling mistakes
2016-04-28 07:23:11 -06:00
magic-number.txt
…
mailbox.txt
…
Makefile
samples: move blackfin gptimers-example from Documentation
2016-10-10 07:12:02 -06:00
Makefile.sphinx
doc-rst: generic way to build PDF of sub-folders
2016-09-01 08:49:23 -06:00
ManagementStyle
Documentation/HOWTO: add cross-references to other documents
2016-09-20 18:41:04 -06:00
md-cluster.txt
md-cluster: change array_sectors and update size are not supported
2016-05-04 12:39:35 -07:00
md.txt
Documentation: fix wrong value in md.txt
2016-06-23 08:08:36 -06:00
memory-barriers.txt
locking/Documentation: Fix a typo of example result
2016-08-12 08:24:13 +02:00
memory-hotplug.txt
memory_hotplug: introduce CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE
2016-05-19 19:12:14 -07:00
men-chameleon-bus.txt
…
module-signing.txt
Documentation/module-signing.txt: Note need for version info if reusing a key
2016-07-27 12:38:00 +09:30
mono.txt
…
nommu-mmap.txt
…
ntb.txt
…
numastat.txt
…
oops-tracing.txt
…
padata.txt
…
parport-lowlevel.txt
…
parport.txt
…
percpu-rw-semaphore.txt
…
phy.txt
phy: core: Allow children node to be overridden
2016-04-29 16:39:39 +02:00
pi-futex.txt
…
pinctrl.txt
pinctrl: Flag strict is a field in struct pinmux_ops
2016-06-23 10:50:10 +02:00
pnp.txt
…
preempt-locking.txt
…
printk-formats.txt
mm, printk: introduce new format string for flags
2016-03-15 16:55:16 -07:00
pwm.txt
pwm: Update documentation
2016-05-17 14:48:04 +02:00
ramoops.txt
ramoops: use DT reserved-memory bindings
2016-08-05 11:21:36 -07:00
rbtree.txt
…
remoteproc.txt
remoteproc: Split driver and consumer dereferencing
2016-10-02 22:50:21 -07:00
rfkill.txt
rfkill: Add documentation about LED triggers
2016-02-24 09:13:12 +01:00
robust-futex-ABI.txt
…
robust-futexes.txt
Documentation: robust-futexes: fix spelling mistakes
2016-04-28 07:26:41 -06:00
rpmsg.txt
rpmsg: use module_rpmsg_driver in existing drivers and examples
2016-05-06 11:09:01 -07:00
rtc.txt
rtc: implement a sysfs interface for clock offset
2016-03-14 17:08:16 +01:00
SAK.txt
…
SecurityBugs
Documentation/HOWTO: add cross-references to other documents
2016-09-20 18:41:04 -06:00
serial-console.txt
…
sgi-ioc4.txt
…
SM501.txt
…
smsc_ece1099.txt
…
stable_api_nonsense.txt
Documentation/HOWTO: add cross-references to other documents
2016-09-20 18:41:04 -06:00
stable_kernel_rules.txt
Documentation: stable-kernel-rules: fix stable-tag format
2017-04-12 12:41:15 +02:00
static-keys.txt
jump_labels: Allow array initialisers
2016-09-07 09:41:11 +01:00
SubmitChecklist
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
SubmittingDrivers
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
SubmittingPatches
docs-rst: add inter-document cross references
2016-09-21 15:43:09 -06:00
svga.txt
…
sync_file.txt
Documentation: add doc for sync_file_get_fence()
2016-08-11 15:33:24 +05:30
sysfs-rules.txt
…
sysrq.txt
Doc: correct the location of sysrq.c
2016-04-28 08:02:36 -06:00
this_cpu_ops.txt
…
unaligned-memory-access.txt
…
unicode.txt
…
unshare.txt
…
vfio.txt
…
VGA-softcursor.txt
…
video-output.txt
…
vme_api.txt
vme: Update documentation to match api
2016-08-31 13:20:16 +02:00
volatile-considered-harmful.txt
…
workqueue.txt
workqueue: Fix a typo in workqueue.txt
2016-07-06 02:37:38 -06:00
xillybus.txt
Documentation: xillybus: fix spelling mistake
2016-04-28 07:44:54 -06:00
xz.txt
…
zorro.txt
…