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Name	Size	Permission
amba	[ DIR ]	drwxr-xr-x
avf	[ DIR ]	drwxr-xr-x
bcma	[ DIR ]	drwxr-xr-x
byteorder	[ DIR ]	drwxr-xr-x
can	[ DIR ]	drwxr-xr-x
ceph	[ DIR ]	drwxr-xr-x
clk	[ DIR ]	drwxr-xr-x
crush	[ DIR ]	drwxr-xr-x
decompress	[ DIR ]	drwxr-xr-x
dma	[ DIR ]	drwxr-xr-x
dsa	[ DIR ]	drwxr-xr-x
extcon	[ DIR ]	drwxr-xr-x
firmware	[ DIR ]	drwxr-xr-x
fpga	[ DIR ]	drwxr-xr-x
fsl	[ DIR ]	drwxr-xr-x
gpio	[ DIR ]	drwxr-xr-x
hsi	[ DIR ]	drwxr-xr-x
i2c	[ DIR ]	drwxr-xr-x
iio	[ DIR ]	drwxr-xr-x
input	[ DIR ]	drwxr-xr-x
irqchip	[ DIR ]	drwxr-xr-x
isdn	[ DIR ]	drwxr-xr-x
lockd	[ DIR ]	drwxr-xr-x
mailbox	[ DIR ]	drwxr-xr-x
mfd	[ DIR ]	drwxr-xr-x
mlx4	[ DIR ]	drwxr-xr-x
mlx5	[ DIR ]	drwxr-xr-x
mmc	[ DIR ]	drwxr-xr-x
mtd	[ DIR ]	drwxr-xr-x
mux	[ DIR ]	drwxr-xr-x
netfilter	[ DIR ]	drwxr-xr-x
netfilter_arp	[ DIR ]	drwxr-xr-x
netfilter_bridge	[ DIR ]	drwxr-xr-x
netfilter_ipv4	[ DIR ]	drwxr-xr-x
netfilter_ipv6	[ DIR ]	drwxr-xr-x
perf	[ DIR ]	drwxr-xr-x
phy	[ DIR ]	drwxr-xr-x
pinctrl	[ DIR ]	drwxr-xr-x
platform_data	[ DIR ]	drwxr-xr-x
power	[ DIR ]	drwxr-xr-x
qed	[ DIR ]	drwxr-xr-x
raid	[ DIR ]	drwxr-xr-x
regulator	[ DIR ]	drwxr-xr-x
remoteproc	[ DIR ]	drwxr-xr-x
reset	[ DIR ]	drwxr-xr-x
rpmsg	[ DIR ]	drwxr-xr-x
rtc	[ DIR ]	drwxr-xr-x
sched	[ DIR ]	drwxr-xr-x
soc	[ DIR ]	drwxr-xr-x
spi	[ DIR ]	drwxr-xr-x
ssb	[ DIR ]	drwxr-xr-x
sunrpc	[ DIR ]	drwxr-xr-x
ulpi	[ DIR ]	drwxr-xr-x
unaligned	[ DIR ]	drwxr-xr-x
usb	[ DIR ]	drwxr-xr-x
uwb	[ DIR ]	drwxr-xr-x
wimax	[ DIR ]	drwxr-xr-x
8250_pci.h	1.01 KB	-rw-r--r--
a.out.h	354 B	-rw-r--r--
acct.h	2.49 KB	-rw-r--r--
acpi.h	36.89 KB	-rw-r--r--
acpi_dma.h	3.22 KB	-rw-r--r--
acpi_iort.h	2.15 KB	-rw-r--r--
acpi_pmtmr.h	674 B	-rw-r--r--
adb.h	1.79 KB	-rw-r--r--
adfs_fs.h	574 B	-rw-r--r--
aer.h	1.71 KB	-rw-r--r--
agp_backend.h	3.45 KB	-rw-r--r--
agpgart.h	3.82 KB	-rw-r--r--
ahci-remap.h	607 B	-rw-r--r--
ahci_platform.h	1.67 KB	-rw-r--r--
aio.h	673 B	-rw-r--r--
alarmtimer.h	1.83 KB	-rw-r--r--
altera_jtaguart.h	379 B	-rw-r--r--
altera_uart.h	397 B	-rw-r--r--
amd-iommu.h	6.78 KB	-rw-r--r--
amifd.h	1.99 KB	-rw-r--r--
amifdreg.h	2.65 KB	-rw-r--r--
anon_inodes.h	494 B	-rw-r--r--
apm-emulation.h	1.54 KB	-rw-r--r--
apm_bios.h	2.68 KB	-rw-r--r--
apple-gmux.h	1.42 KB	-rw-r--r--
apple_bl.h	498 B	-rw-r--r--
arch_topology.h	840 B	-rw-r--r--
arm-cci.h	2.01 KB	-rw-r--r--
arm-smccc.h	12.79 KB	-rw-r--r--
arm_sdei.h	2.33 KB	-rw-r--r--
asn1.h	1.99 KB	-rw-r--r--
asn1_ber_bytecode.h	2.72 KB	-rw-r--r--
asn1_decoder.h	675 B	-rw-r--r--
assoc_array.h	3.07 KB	-rw-r--r--
assoc_array_priv.h	5.49 KB	-rw-r--r--
async.h	1.65 KB	-rw-r--r--
async_tx.h	6.81 KB	-rw-r--r--
ata.h	33.61 KB	-rw-r--r--
ata_platform.h	729 B	-rw-r--r--
atalk.h	4.36 KB	-rw-r--r--
ath9k_platform.h	1.44 KB	-rw-r--r--
atm.h	287 B	-rw-r--r--
atm_suni.h	253 B	-rw-r--r--
atm_tcp.h	511 B	-rw-r--r--
atmdev.h	10.21 KB	-rw-r--r--
atmel-mci.h	1.4 KB	-rw-r--r--
atmel-ssc.h	9.74 KB	-rw-r--r--
atmel_pdc.h	1.47 KB	-rw-r--r--
atmel_tc.h	11.33 KB	-rw-r--r--
atomic.h	30.5 KB	-rw-r--r--
attribute_container.h	2.47 KB	-rw-r--r--
audit.h	17.22 KB	-rw-r--r--
auto_dev-ioctl.h	454 B	-rw-r--r--
auto_fs.h	436 B	-rw-r--r--
auxvec.h	304 B	-rw-r--r--
average.h	2.42 KB	-rw-r--r--
b1pcmcia.h	666 B	-rw-r--r--
backing-dev-defs.h	8.53 KB	-rw-r--r--
backing-dev.h	13.8 KB	-rw-r--r--
backlight.h	5.3 KB	-rw-r--r--
badblocks.h	2.14 KB	-rw-r--r--
balloon_compaction.h	7.2 KB	-rw-r--r--
bcd.h	559 B	-rw-r--r--
bch.h	2.6 KB	-rw-r--r--
bcm47xx_nvram.h	1.22 KB	-rw-r--r--
bcm47xx_sprom.h	600 B	-rw-r--r--
bcm47xx_wdt.h	555 B	-rw-r--r--
bcm963xx_nvram.h	2.96 KB	-rw-r--r--
bcm963xx_tag.h	3.6 KB	-rw-r--r--
bfin_mac.h	559 B	-rw-r--r--
binfmts.h	4.77 KB	-rw-r--r--
bio.h	20.17 KB	-rw-r--r--
bit_spinlock.h	2.3 KB	-rw-r--r--
bitfield.h	3.2 KB	-rw-r--r--
bitmap.h	16.68 KB	-rw-r--r--
bitops.h	6.69 KB	-rw-r--r--
bitrev.h	2.53 KB	-rw-r--r--
bits.h	883 B	-rw-r--r--
blk-cgroup.h	22.2 KB	-rw-r--r--
blk-mq-pci.h	247 B	-rw-r--r--
blk-mq-rdma.h	232 B	-rw-r--r--
blk-mq-virtio.h	288 B	-rw-r--r--
blk-mq.h	9.09 KB	-rw-r--r--
blk_types.h	10.52 KB	-rw-r--r--
blkdev.h	58.96 KB	-rw-r--r--
blkpg.h	436 B	-rw-r--r--
blktrace_api.h	3.87 KB	-rw-r--r--
blockgroup_lock.h	810 B	-rw-r--r--
bma150.h	1.89 KB	-rw-r--r--
bootmem.h	11.7 KB	-rw-r--r--
bottom_half.h	803 B	-rw-r--r--
bpf-cgroup.h	4.53 KB	-rw-r--r--
bpf.h	18.51 KB	-rw-r--r--
bpf_trace.h	196 B	-rw-r--r--
bpf_types.h	1.88 KB	-rw-r--r--
bpf_verifier.h	6.76 KB	-rw-r--r--
brcmphy.h	9.88 KB	-rw-r--r--
bsearch.h	275 B	-rw-r--r--
bsg-lib.h	2.13 KB	-rw-r--r--
bsg.h	773 B	-rw-r--r--
btree-128.h	2.67 KB	-rw-r--r--
btree-type.h	3.9 KB	-rw-r--r--
btree.h	6.83 KB	-rw-r--r--
btrfs.h	145 B	-rw-r--r--
buffer_head.h	14.38 KB	-rw-r--r--
bug.h	1.92 KB	-rw-r--r--
build_bug.h	3.15 KB	-rw-r--r--
bvec.h	4.39 KB	-rw-r--r--
c2port.h	1.49 KB	-rw-r--r--
cache.h	2.13 KB	-rw-r--r--
cacheinfo.h	3.27 KB	-rw-r--r--
capability.h	7.6 KB	-rw-r--r--
cb710.h	5.69 KB	-rw-r--r--
cciss_ioctl.h	1.03 KB	-rw-r--r--
ccp.h	18.26 KB	-rw-r--r--
cdev.h	845 B	-rw-r--r--
cdrom.h	8.75 KB	-rw-r--r--
cfag12864b.h	2.1 KB	-rw-r--r--
cgroup-defs.h	25.38 KB	-rw-r--r--
cgroup.h	26.12 KB	-rw-r--r--
cgroup_rdma.h	1.33 KB	-rw-r--r--
cgroup_subsys.h	1.17 KB	-rw-r--r--
circ_buf.h	1.08 KB	-rw-r--r--
cleancache.h	3.89 KB	-rw-r--r--
clk-provider.h	34.29 KB	-rw-r--r--
clk.h	19.38 KB	-rw-r--r--
clkdev.h	1.54 KB	-rw-r--r--
clock_cooling.h	2.06 KB	-rw-r--r--
clockchips.h	7.27 KB	-rw-r--r--
clocksource.h	8.31 KB	-rw-r--r--
cm4000_cs.h	199 B	-rw-r--r--
cma.h	1.19 KB	-rw-r--r--
cmdline-parser.h	1.21 KB	-rw-r--r--
cn_proc.h	1.85 KB	-rw-r--r--
cnt32_to_63.h	3.6 KB	-rw-r--r--
coda.h	2.16 KB	-rw-r--r--
coda_psdev.h	2.98 KB	-rw-r--r--
compaction.h	7.1 KB	-rw-r--r--
compat.h	27.39 KB	-rw-r--r--
compiler-clang.h	1.31 KB	-rw-r--r--
compiler-gcc.h	12.6 KB	-rw-r--r--
compiler-intel.h	1.3 KB	-rw-r--r--
compiler.h	10.06 KB	-rw-r--r--
compiler_types.h	7.5 KB	-rw-r--r--
completion.h	4.05 KB	-rw-r--r--
component.h	1.37 KB	-rw-r--r--
concap.h	3.69 KB	-rw-r--r--
configfs.h	9.22 KB	-rw-r--r--
connector.h	2.43 KB	-rw-r--r--
console.h	6.72 KB	-rw-r--r--
console_struct.h	6.87 KB	-rw-r--r--
consolemap.h	1.04 KB	-rw-r--r--
const.h	157 B	-rw-r--r--
container.h	668 B	-rw-r--r--
context_tracking.h	4.43 KB	-rw-r--r--
context_tracking_state.h	1.39 KB	-rw-r--r--
cordic.h	1.75 KB	-rw-r--r--
coredump.h	783 B	-rw-r--r--
coresight-pmu.h	1.44 KB	-rw-r--r--
coresight-stm.h	152 B	-rw-r--r--
coresight.h	9.86 KB	-rw-r--r--
count_zeros.h	1.62 KB	-rw-r--r--
cper.h	16.11 KB	-rw-r--r--
cpu.h	6.86 KB	-rw-r--r--
cpu_cooling.h	3.59 KB	-rw-r--r--
cpu_pm.h	2.78 KB	-rw-r--r--
cpu_rmap.h	1.86 KB	-rw-r--r--
cpufeature.h	1.85 KB	-rw-r--r--
cpufreq.h	27.62 KB	-rw-r--r--
cpuhotplug.h	12.05 KB	-rw-r--r--
cpuidle.h	8.68 KB	-rw-r--r--
cpumask.h	25.38 KB	-rw-r--r--
cpuset.h	7.07 KB	-rw-r--r--
crash_core.h	2.99 KB	-rw-r--r--
crash_dump.h	2.98 KB	-rw-r--r--
crc-ccitt.h	369 B	-rw-r--r--
crc-itu-t.h	613 B	-rw-r--r--
crc-t10dif.h	415 B	-rw-r--r--
crc16.h	622 B	-rw-r--r--
crc32.h	2.83 KB	-rw-r--r--
crc32c.h	293 B	-rw-r--r--
crc4.h	192 B	-rw-r--r--
crc7.h	316 B	-rw-r--r--
crc8.h	3.65 KB	-rw-r--r--
cred.h	12.29 KB	-rw-r--r--
crypto.h	55.52 KB	-rw-r--r--
cryptohash.h	319 B	-rw-r--r--
cs5535.h	6.28 KB	-rw-r--r--
ctype.h	1.75 KB	-rw-r--r--
cuda.h	501 B	-rw-r--r--
cyclades.h	10.36 KB	-rw-r--r--
davinci_emac.h	1.12 KB	-rw-r--r--
dax.h	3.65 KB	-rw-r--r--
dca.h	2.63 KB	-rw-r--r--
dcache.h	18.78 KB	-rw-r--r--
dccp.h	10.73 KB	-rw-r--r--
dcookies.h	1.3 KB	-rw-r--r--
debug_locks.h	1.51 KB	-rw-r--r--
debugfs.h	11.09 KB	-rw-r--r--
debugobjects.h	3.89 KB	-rw-r--r--
delay.h	1.83 KB	-rw-r--r--
delayacct.h	5.17 KB	-rw-r--r--
delayed_call.h	709 B	-rw-r--r--
dell-led.h	128 B	-rw-r--r--
devcoredump.h	2.78 KB	-rw-r--r--
devfreq-event.h	5.64 KB	-rw-r--r--
devfreq.h	12.53 KB	-rw-r--r--
devfreq_cooling.h	3.54 KB	-rw-r--r--
device-mapper.h	17.85 KB	-rw-r--r--
device.h	55.51 KB	-rw-r--r--
device_cgroup.h	1.86 KB	-rw-r--r--
devpts_fs.h	1.28 KB	-rw-r--r--
digsig.h	1.35 KB	-rw-r--r--
dim.h	8.98 KB	-rw-r--r--
dio.h	10.97 KB	-rw-r--r--
dirent.h	216 B	-rw-r--r--
dlm.h	6.01 KB	-rw-r--r--
dlm_plock.h	678 B	-rw-r--r--
dm-dirty-log.h	3.94 KB	-rw-r--r--
dm-io.h	1.93 KB	-rw-r--r--
dm-kcopyd.h	2.88 KB	-rw-r--r--
dm-region-hash.h	3.11 KB	-rw-r--r--
dm9000.h	1.11 KB	-rw-r--r--
dma-buf.h	14.7 KB	-rw-r--r--
dma-contiguous.h	4.48 KB	-rw-r--r--
dma-debug.h	5.61 KB	-rw-r--r--
dma-direction.h	338 B	-rw-r--r--
dma-fence-array.h	2.49 KB	-rw-r--r--
dma-fence.h	17.29 KB	-rw-r--r--
dma-iommu.h	3.62 KB	-rw-r--r--
dma-mapping.h	24.61 KB	-rw-r--r--
dma_remapping.h	1.46 KB	-rw-r--r--
dmaengine.h	46.04 KB	-rw-r--r--
dmapool.h	1.09 KB	-rw-r--r--
dmar.h	7.94 KB	-rw-r--r--
dmi.h	4.08 KB	-rw-r--r--
dnotify.h	1.02 KB	-rw-r--r--
dns_resolver.h	1.31 KB	-rw-r--r--
dqblk_qtree.h	2.19 KB	-rw-r--r--
dqblk_v1.h	327 B	-rw-r--r--
dqblk_v2.h	406 B	-rw-r--r--
drbd.h	10.67 KB	-rw-r--r--
drbd_genl.h	21.49 KB	-rw-r--r--
drbd_genl_api.h	1.77 KB	-rw-r--r--
drbd_limits.h	7.82 KB	-rw-r--r--
ds2782_battery.h	158 B	-rw-r--r--
dtlk.h	3.5 KB	-rw-r--r--
dw_apb_timer.h	1.7 KB	-rw-r--r--
dynamic_debug.h	5.08 KB	-rw-r--r--
dynamic_queue_limits.h	3.7 KB	-rw-r--r--
earlycpio.h	359 B	-rw-r--r--
ecryptfs.h	3.82 KB	-rw-r--r--
edac.h	20.26 KB	-rw-r--r--
edd.h	1.43 KB	-rw-r--r--
edma.h	807 B	-rw-r--r--
eeprom_93cx6.h	2.94 KB	-rw-r--r--
eeprom_93xx46.h	879 B	-rw-r--r--
efi-bgrt.h	644 B	-rw-r--r--
efi.h	49.13 KB	-rw-r--r--
efs_vh.h	1.55 KB	-rw-r--r--
eisa.h	2.96 KB	-rw-r--r--
elevator.h	9.26 KB	-rw-r--r--
elf-fdpic.h	2.18 KB	-rw-r--r--
elf-randomize.h	583 B	-rw-r--r--
elf.h	1.53 KB	-rw-r--r--
elfcore-compat.h	1.24 KB	-rw-r--r--
elfcore.h	2.52 KB	-rw-r--r--
elfnote.h	3.54 KB	-rw-r--r--
enclosure.h	4.6 KB	-rw-r--r--
err.h	1.55 KB	-rw-r--r--
errno.h	1.34 KB	-rw-r--r--
errqueue.h	524 B	-rw-r--r--
errseq.h	373 B	-rw-r--r--
etherdevice.h	15.65 KB	-rw-r--r--
ethtool.h	17.3 KB	-rw-r--r--
eventfd.h	2.36 KB	-rw-r--r--
eventpoll.h	2.16 KB	-rw-r--r--
evm.h	2.65 KB	-rw-r--r--
export.h	3.88 KB	-rw-r--r--
exportfs.h	7.45 KB	-rw-r--r--
ext2_fs.h	967 B	-rw-r--r--
extable.h	999 B	-rw-r--r--
extcon-provider.h	4.33 KB	-rw-r--r--
extcon.h	10.4 KB	-rw-r--r--
f2fs_fs.h	17.51 KB	-rw-r--r--
f75375s.h	541 B	-rw-r--r--
falloc.h	792 B	-rw-r--r--
fanotify.h	245 B	-rw-r--r--
fault-inject.h	1.87 KB	-rw-r--r--
fb.h	28.74 KB	-rw-r--r--
fbcon.h	492 B	-rw-r--r--
fcdevice.h	988 B	-rw-r--r--
fcntl.h	1.27 KB	-rw-r--r--
fd.h	490 B	-rw-r--r--
fddidevice.h	1.02 KB	-rw-r--r--
fdtable.h	3.28 KB	-rw-r--r--
fec.h	609 B	-rw-r--r--
file.h	2.18 KB	-rw-r--r--
filter.h	27.5 KB	-rw-r--r--
fips.h	167 B	-rw-r--r--
firewire.h	13.4 KB	-rw-r--r--
firmware-map.h	1.32 KB	-rw-r--r--
firmware.h	2.34 KB	-rw-r--r--
fixp-arith.h	4.41 KB	-rw-r--r--
flat.h	1.61 KB	-rw-r--r--
flex_array.h	4.31 KB	-rw-r--r--
flex_proportions.h	2.81 KB	-rw-r--r--
fmc-sdb.h	1.29 KB	-rw-r--r--
fmc.h	9.65 KB	-rw-r--r--
font.h	1.6 KB	-rw-r--r--
frame.h	813 B	-rw-r--r--
freezer.h	8.67 KB	-rw-r--r--
frontswap.h	2.87 KB	-rw-r--r--
fs.h	110.97 KB	-rw-r--r--
fs_enet_pd.h	3.38 KB	-rw-r--r--
fs_pin.h	619 B	-rw-r--r--
fs_stack.h	811 B	-rw-r--r--
fs_struct.h	1.03 KB	-rw-r--r--
fs_uart_pd.h	1.49 KB	-rw-r--r--
fscache-cache.h	18.4 KB	-rw-r--r--
fscache.h	27.54 KB	-rw-r--r--
fscrypt.h	8.93 KB	-rw-r--r--
fscrypt_notsupp.h	4.45 KB	-rw-r--r--
fscrypt_supp.h	6.1 KB	-rw-r--r--
fsi.h	2.37 KB	-rw-r--r--
fsl-diu-fb.h	4.08 KB	-rw-r--r--
fsl_devices.h	4.32 KB	-rw-r--r--
fsl_hypervisor.h	2.76 KB	-rw-r--r--
fsl_ifc.h	25.13 KB	-rw-r--r--
fsldma.h	398 B	-rw-r--r--
fsnotify.h	7.43 KB	-rw-r--r--
fsnotify_backend.h	16.66 KB	-rw-r--r--
ftrace.h	29.91 KB	-rw-r--r--
ftrace_irq.h	823 B	-rw-r--r--
futex.h	2.4 KB	-rw-r--r--
fwnode.h	4.41 KB	-rw-r--r--
gameport.h	5.56 KB	-rw-r--r--
gcd.h	193 B	-rw-r--r--
genalloc.h	5.92 KB	-rw-r--r--
genetlink.h	1.39 KB	-rw-r--r--
genhd.h	22.77 KB	-rw-r--r--
genl_magic_func.h	12.05 KB	-rw-r--r--
genl_magic_struct.h	7.66 KB	-rw-r--r--
getcpu.h	641 B	-rw-r--r--
gfp.h	23.37 KB	-rw-r--r--
glob.h	256 B	-rw-r--r--
goldfish.h	605 B	-rw-r--r--
gpio-pxa.h	571 B	-rw-r--r--
gpio.h	5.19 KB	-rw-r--r--
gpio_keys.h	1.63 KB	-rw-r--r--
hardirq.h	1.95 KB	-rw-r--r--
hash.h	3 KB	-rw-r--r--
hashtable.h	6.63 KB	-rw-r--r--
hdlc.h	3.33 KB	-rw-r--r--
hdlcdrv.h	6.32 KB	-rw-r--r--
hdmi.h	9.36 KB	-rw-r--r--
hid-debug.h	2.07 KB	-rw-r--r--
hid-roccat.h	688 B	-rw-r--r--
hid-sensor-hub.h	9.25 KB	-rw-r--r--
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hid.h	35.93 KB	-rw-r--r--
hiddev.h	2.07 KB	-rw-r--r--
hidraw.h	1.49 KB	-rw-r--r--
highmem.h	5.84 KB	-rw-r--r--
highuid.h	3.12 KB	-rw-r--r--
hil.h	18.42 KB	-rw-r--r--
hil_mlc.h	5.13 KB	-rw-r--r--
hippidevice.h	1.23 KB	-rw-r--r--
hmm.h	18.19 KB	-rw-r--r--
host1x.h	9.02 KB	-rw-r--r--
hp_sdc.h	14.02 KB	-rw-r--r--
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htcpld.h	617 B	-rw-r--r--
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hw_breakpoint.h	3.85 KB	-rw-r--r--
hw_random.h	2.03 KB	-rw-r--r--
hwmon-sysfs.h	1.98 KB	-rw-r--r--
hwmon-vid.h	1.48 KB	-rw-r--r--
hwmon.h	12.07 KB	-rw-r--r--
hwspinlock.h	11.06 KB	-rw-r--r--
hyperv.h	38.89 KB	-rw-r--r--
hypervisor.h	400 B	-rw-r--r--
i2c-algo-bit.h	2.24 KB	-rw-r--r--
i2c-algo-pca.h	2.89 KB	-rw-r--r--
i2c-algo-pcf.h	1.88 KB	-rw-r--r--
i2c-dev.h	1.03 KB	-rw-r--r--
i2c-gpio.h	1.19 KB	-rw-r--r--
i2c-mux-gpio.h	1.35 KB	-rw-r--r--
i2c-mux.h	2.29 KB	-rw-r--r--
i2c-ocores.h	757 B	-rw-r--r--
i2c-omap.h	1.21 KB	-rw-r--r--
i2c-pca-platform.h	441 B	-rw-r--r--
i2c-pnx.h	923 B	-rw-r--r--
i2c-pxa.h	438 B	-rw-r--r--
i2c-smbus.h	1.94 KB	-rw-r--r--
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i2c.h	30.91 KB	-rw-r--r--
i7300_idle.h	1.95 KB	-rw-r--r--
i8042.h	2.14 KB	-rw-r--r--
i8253.h	809 B	-rw-r--r--
icmp.h	863 B	-rw-r--r--
icmpv6.h	2.5 KB	-rw-r--r--
ide.h	46.27 KB	-rw-r--r--
idr.h	7.82 KB	-rw-r--r--
ieee80211.h	83.19 KB	-rw-r--r--
ieee802154.h	11.5 KB	-rw-r--r--
if_arp.h	1.86 KB	-rw-r--r--
if_bridge.h	2.65 KB	-rw-r--r--
if_eql.h	1.07 KB	-rw-r--r--
if_ether.h	1.47 KB	-rw-r--r--
if_fddi.h	3.44 KB	-rw-r--r--
if_frad.h	2.87 KB	-rw-r--r--
if_link.h	554 B	-rw-r--r--
if_ltalk.h	188 B	-rw-r--r--
if_macvlan.h	2.2 KB	-rw-r--r--
if_phonet.h	319 B	-rw-r--r--
if_pppol2tp.h	727 B	-rw-r--r--
if_pppox.h	3.05 KB	-rw-r--r--
if_tap.h	2.24 KB	-rw-r--r--
if_team.h	7.65 KB	-rw-r--r--
if_tun.h	1.14 KB	-rw-r--r--
if_tunnel.h	409 B	-rw-r--r--
if_vlan.h	19.2 KB	-rw-r--r--
igmp.h	4.15 KB	-rw-r--r--
ihex.h	1.95 KB	-rw-r--r--
ima.h	2.53 KB	-rw-r--r--
imx-media.h	811 B	-rw-r--r--
in.h	2.43 KB	-rw-r--r--
in6.h	1.85 KB	-rw-r--r--
inet.h	2.8 KB	-rw-r--r--
inet_diag.h	2.42 KB	-rw-r--r--
inetdevice.h	8.25 KB	-rw-r--r--
init.h	9.1 KB	-rw-r--r--
init_ohci1394_dma.h	196 B	-rw-r--r--
init_task.h	7.84 KB	-rw-r--r--
initrd.h	685 B	-rw-r--r--
inotify.h	696 B	-rw-r--r--
input-polldev.h	2.17 KB	-rw-r--r--
input.h	18.7 KB	-rw-r--r--
integrity.h	1.05 KB	-rw-r--r--
intel-iommu.h	16.85 KB	-rw-r--r--
intel-pti.h	1.56 KB	-rw-r--r--
intel-svm.h	4.96 KB	-rw-r--r--
interrupt.h	21.15 KB	-rw-r--r--
interval_tree.h	831 B	-rw-r--r--
interval_tree_generic.h	8 KB	-rw-r--r--
io-64-nonatomic-hi-lo.h	1.14 KB	-rw-r--r--
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io-mapping.h	4.36 KB	-rw-r--r--
io.h	5.86 KB	-rw-r--r--
ioc3.h	3.14 KB	-rw-r--r--
ioc4.h	5.78 KB	-rw-r--r--
iocontext.h	4.76 KB	-rw-r--r--
iomap.h	3.95 KB	-rw-r--r--
iommu-common.h	1.41 KB	-rw-r--r--
iommu-helper.h	950 B	-rw-r--r--
iommu.h	21.74 KB	-rw-r--r--
iopoll.h	5.72 KB	-rw-r--r--
ioport.h	10.74 KB	-rw-r--r--
ioprio.h	1.96 KB	-rw-r--r--
iova.h	7.03 KB	-rw-r--r--
ip.h	1.07 KB	-rw-r--r--
ipack.h	8.85 KB	-rw-r--r--
ipc.h	695 B	-rw-r--r--
ipc_namespace.h	4.81 KB	-rw-r--r--
ipmi-fru.h	3.64 KB	-rw-r--r--
ipmi.h	11.44 KB	-rw-r--r--
ipmi_smi.h	8.9 KB	-rw-r--r--
ipv6.h	8.92 KB	-rw-r--r--
ipv6_route.h	594 B	-rw-r--r--
irq.h	39.04 KB	-rw-r--r--
irq_cpustat.h	949 B	-rw-r--r--
irq_poll.h	575 B	-rw-r--r--
irq_sim.h	1.16 KB	-rw-r--r--
irq_work.h	1.3 KB	-rw-r--r--
irqbypass.h	3.59 KB	-rw-r--r--
irqchip.h	1.54 KB	-rw-r--r--
irqdesc.h	8.15 KB	-rw-r--r--
irqdomain.h	19.21 KB	-rw-r--r--
irqflags.h	4.82 KB	-rw-r--r--
irqhandler.h	362 B	-rw-r--r--
irqnr.h	856 B	-rw-r--r--
irqreturn.h	503 B	-rw-r--r--
isa.h	2.12 KB	-rw-r--r--
isapnp.h	3.8 KB	-rw-r--r--
iscsi_boot_sysfs.h	4.09 KB	-rw-r--r--
iscsi_ibft.h	1.28 KB	-rw-r--r--
isdn.h	22.99 KB	-rw-r--r--
isdn_divertif.h	1.27 KB	-rw-r--r--
isdn_ppp.h	6.64 KB	-rw-r--r--
isdnif.h	19.26 KB	-rw-r--r--
isicom.h	1.49 KB	-rw-r--r--
jbd2.h	47.14 KB	-rw-r--r--
jhash.h	4.62 KB	-rw-r--r--
jiffies.h	15.4 KB	-rw-r--r--
journal-head.h	2.87 KB	-rw-r--r--
joystick.h	1.28 KB	-rw-r--r--
jump_label.h	13.32 KB	-rw-r--r--
jump_label_ratelimit.h	1.12 KB	-rw-r--r--
jz4740-adc.h	1023 B	-rw-r--r--
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kallsyms.h	3.59 KB	-rw-r--r--
kasan-checks.h	441 B	-rw-r--r--
kasan.h	4.48 KB	-rw-r--r--
kbd_diacr.h	198 B	-rw-r--r--
kbd_kern.h	3.84 KB	-rw-r--r--
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kconfig.h	2.53 KB	-rw-r--r--
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kern_levels.h	1.58 KB	-rw-r--r--
kernel-page-flags.h	505 B	-rw-r--r--
kernel.h	31.31 KB	-rw-r--r--
kernel_stat.h	2.5 KB	-rw-r--r--
kernelcapi.h	4.45 KB	-rw-r--r--
kernfs.h	16.88 KB	-rw-r--r--
kexec.h	10.06 KB	-rw-r--r--
key-type.h	6.16 KB	-rw-r--r--
key.h	12.75 KB	-rw-r--r--
keyboard.h	665 B	-rw-r--r--
kfifo.h	24.84 KB	-rw-r--r--
kgdb.h	10.72 KB	-rw-r--r--
khugepaged.h	2.36 KB	-rw-r--r--
klist.h	1.88 KB	-rw-r--r--
kmemleak.h	3.86 KB	-rw-r--r--
kmod.h	1.71 KB	-rw-r--r--
kmsg_dump.h	2.85 KB	-rw-r--r--
kobj_map.h	545 B	-rw-r--r--
kobject.h	7.62 KB	-rw-r--r--
kobject_ns.h	1.9 KB	-rw-r--r--
kprobes.h	14.71 KB	-rw-r--r--
kref.h	3.28 KB	-rw-r--r--
ks0108.h	1.57 KB	-rw-r--r--
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ks8851_mll.h	1.04 KB	-rw-r--r--
ksm.h	2.89 KB	-rw-r--r--
kthread.h	6.7 KB	-rw-r--r--
ktime.h	6.71 KB	-rw-r--r--
kvm_host.h	37.83 KB	-rw-r--r--
kvm_irqfd.h	2.39 KB	-rw-r--r--
kvm_para.h	284 B	-rw-r--r--
kvm_types.h	1.67 KB	-rw-r--r--
l2tp.h	261 B	-rw-r--r--
lapb.h	1.71 KB	-rw-r--r--
latencytop.h	1.18 KB	-rw-r--r--
lcd.h	4.19 KB	-rw-r--r--
lcm.h	275 B	-rw-r--r--
led-class-flash.h	5.42 KB	-rw-r--r--
led-lm3530.h	3.7 KB	-rw-r--r--
leds-bd2802.h	642 B	-rw-r--r--
leds-lp3944.h	1.07 KB	-rw-r--r--
leds-lp3952.h	2.5 KB	-rw-r--r--
leds-pca9532.h	1.01 KB	-rw-r--r--
leds-regulator.h	1.29 KB	-rw-r--r--
leds-tca6507.h	1.02 KB	-rw-r--r--
leds.h	13.67 KB	-rw-r--r--
leds_pwm.h	407 B	-rw-r--r--
libata.h	64.88 KB	-rw-r--r--
libfdt.h	244 B	-rw-r--r--
libfdt_env.h	494 B	-rw-r--r--
libgcc.h	1.07 KB	-rw-r--r--
libnvdimm.h	7.16 KB	-rw-r--r--
libps2.h	1.75 KB	-rw-r--r--
license.h	374 B	-rw-r--r--
lightnvm.h	10.95 KB	-rw-r--r--
linkage.h	2.64 KB	-rw-r--r--
linux_logo.h	2.06 KB	-rw-r--r--
lis3lv02d.h	5 KB	-rw-r--r--
list.h	23.71 KB	-rw-r--r--
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list_lru.h	6.29 KB	-rw-r--r--
list_nulls.h	3.47 KB	-rw-r--r--
list_sort.h	277 B	-rw-r--r--
livepatch.h	6.94 KB	-rw-r--r--
llc.h	749 B	-rw-r--r--
llist.h	9.15 KB	-rw-r--r--
lockdep.h	18.61 KB	-rw-r--r--
lockref.h	1.45 KB	-rw-r--r--
log2.h	5.48 KB	-rw-r--r--
logic_pio.h	3.24 KB	-rw-r--r--
lp.h	2.76 KB	-rw-r--r--
lru_cache.h	12.42 KB	-rw-r--r--
lsm_audit.h	2.73 KB	-rw-r--r--
lsm_hooks.h	88.04 KB	-rw-r--r--
lz4.h	26.44 KB	-rw-r--r--
lzo.h	1.37 KB	-rw-r--r--
mISDNdsp.h	1.19 KB	-rw-r--r--
mISDNhw.h	5.78 KB	-rw-r--r--
mISDNif.h	14.91 KB	-rw-r--r--
mailbox_client.h	1.79 KB	-rw-r--r--
mailbox_controller.h	5.4 KB	-rw-r--r--
maple.h	2.71 KB	-rw-r--r--
marvell_phy.h	1.17 KB	-rw-r--r--
math64.h	6.42 KB	-rw-r--r--
max17040_battery.h	474 B	-rw-r--r--
mbcache.h	1.57 KB	-rw-r--r--
mbus.h	3.09 KB	-rw-r--r--
mc146818rtc.h	4.46 KB	-rw-r--r--
mc6821.h	1.18 KB	-rw-r--r--
mcb.h	3.88 KB	-rw-r--r--
mdev.h	4.9 KB	-rw-r--r--
mdio-bitbang.h	1.18 KB	-rw-r--r--
mdio-mux.h	1021 B	-rw-r--r--
mdio.h	9.01 KB	-rw-r--r--
mei_cl_bus.h	3.28 KB	-rw-r--r--
mem_encrypt.h	1.21 KB	-rw-r--r--
memblock.h	14.6 KB	-rw-r--r--
memcontrol.h	29.63 KB	-rw-r--r--
memory.h	4.52 KB	-rw-r--r--
memory_hotplug.h	10.29 KB	-rw-r--r--
mempolicy.h	7.44 KB	-rw-r--r--
mempool.h	2.39 KB	-rw-r--r--
memremap.h	7.15 KB	-rw-r--r--
memstick.h	9.73 KB	-rw-r--r--
mic_bus.h	3.2 KB	-rw-r--r--
micrel_phy.h	1.42 KB	-rw-r--r--
microchipphy.h	2.84 KB	-rw-r--r--
migrate.h	10.02 KB	-rw-r--r--
migrate_mode.h	758 B	-rw-r--r--
mii.h	8.74 KB	-rw-r--r--
miscdevice.h	2.81 KB	-rw-r--r--
mm-arch-hooks.h	679 B	-rw-r--r--
mm.h	85.89 KB	-rw-r--r--
mm_inline.h	3.44 KB	-rw-r--r--
mm_types.h	19.25 KB	-rw-r--r--
mm_types_task.h	2.4 KB	-rw-r--r--
mman.h	3.26 KB	-rw-r--r--
mmdebug.h	2.32 KB	-rw-r--r--
mmiotrace.h	3.05 KB	-rw-r--r--
mmu_context.h	378 B	-rw-r--r--
mmu_notifier.h	15.84 KB	-rw-r--r--
mmzone.h	39.66 KB	-rw-r--r--
mnt_namespace.h	617 B	-rw-r--r--
mod_devicetable.h	19.33 KB	-rw-r--r--
module.h	22.23 KB	-rw-r--r--
moduleloader.h	2.72 KB	-rw-r--r--
moduleparam.h	19.42 KB	-rw-r--r--
mount.h	3.45 KB	-rw-r--r--
mpage.h	761 B	-rw-r--r--
mpi.h	5.17 KB	-rw-r--r--
mpls.h	394 B	-rw-r--r--
mpls_iptunnel.h	178 B	-rw-r--r--
mroute.h	4.71 KB	-rw-r--r--
mroute6.h	3.27 KB	-rw-r--r--
msdos_fs.h	273 B	-rw-r--r--
msg.h	1.02 KB	-rw-r--r--
msi.h	11.79 KB	-rw-r--r--
mutex.h	6.91 KB	-rw-r--r--
mv643xx.h	52.4 KB	-rw-r--r--
mv643xx_eth.h	1.95 KB	-rw-r--r--
mv643xx_i2c.h	545 B	-rw-r--r--
mvebu-pmsu.h	520 B	-rw-r--r--
mxm-wmi.h	1.05 KB	-rw-r--r--
n_r3964.h	4.06 KB	-rw-r--r--
namei.h	3.41 KB	-rw-r--r--
nd.h	5.71 KB	-rw-r--r--
net.h	11.33 KB	-rw-r--r--
netdev_features.h	9.39 KB	-rw-r--r--
netdevice.h	140.44 KB	-rw-r--r--
netfilter.h	11.74 KB	-rw-r--r--
netfilter_bridge.h	1.82 KB	-rw-r--r--
netfilter_defs.h	239 B	-rw-r--r--
netfilter_ingress.h	1.44 KB	-rw-r--r--
netfilter_ipv4.h	424 B	-rw-r--r--
netfilter_ipv6.h	1.43 KB	-rw-r--r--
netlink.h	6.87 KB	-rw-r--r--
netpoll.h	2.69 KB	-rw-r--r--
nfs.h	1.31 KB	-rw-r--r--
nfs3.h	260 B	-rw-r--r--
nfs4.h	17.5 KB	-rw-r--r--
nfs_fs.h	16.12 KB	-rw-r--r--
nfs_fs_i.h	308 B	-rw-r--r--
nfs_fs_sb.h	8.81 KB	-rw-r--r--
nfs_iostat.h	4.18 KB	-rw-r--r--
nfs_page.h	6.26 KB	-rw-r--r--
nfs_xdr.h	38.79 KB	-rw-r--r--
nfsacl.h	1.15 KB	-rw-r--r--
nl802154.h	4.23 KB	-rw-r--r--
nls.h	3.08 KB	-rw-r--r--
nmi.h	6.56 KB	-rw-r--r--
node.h	3 KB	-rw-r--r--
nodemask.h	17.08 KB	-rw-r--r--
nospec.h	2.21 KB	-rw-r--r--
notifier.h	7.72 KB	-rw-r--r--
ns_common.h	235 B	-rw-r--r--
nsc_gpio.h	1.42 KB	-rw-r--r--
nsproxy.h	2.48 KB	-rw-r--r--
ntb.h	46.52 KB	-rw-r--r--
ntb_transport.h	3.8 KB	-rw-r--r--
nubus.h	4.13 KB	-rw-r--r--
numa.h	292 B	-rw-r--r--
nvme-fc-driver.h	38.22 KB	-rw-r--r--
nvme-fc.h	8.34 KB	-rw-r--r--
nvme-rdma.h	2.44 KB	-rw-r--r--
nvme.h	26.61 KB	-rw-r--r--
nvmem-consumer.h	4.35 KB	-rw-r--r--
nvmem-provider.h	1.52 KB	-rw-r--r--
nvram.h	495 B	-rw-r--r--
of.h	40.4 KB	-rw-r--r--
of_address.h	4.47 KB	-rw-r--r--
of_device.h	3.04 KB	-rw-r--r--
of_dma.h	2.45 KB	-rw-r--r--
of_fdt.h	4.19 KB	-rw-r--r--
of_gpio.h	4.39 KB	-rw-r--r--
of_graph.h	3.56 KB	-rw-r--r--
of_iommu.h	1 KB	-rw-r--r--
of_irq.h	3.6 KB	-rw-r--r--
of_mdio.h	2.98 KB	-rw-r--r--
of_net.h	708 B	-rw-r--r--
of_pci.h	2.23 KB	-rw-r--r--
of_pdt.h	1.4 KB	-rw-r--r--
of_platform.h	4.1 KB	-rw-r--r--
of_reserved_mem.h	2.35 KB	-rw-r--r--
oid_registry.h	3.87 KB	-rw-r--r--
olpc-ec.h	1.08 KB	-rw-r--r--
omap-dma.h	10.5 KB	-rw-r--r--
omap-dmaengine.h	583 B	-rw-r--r--
omap-gpmc.h	2.22 KB	-rw-r--r--
omap-iommu.h	520 B	-rw-r--r--
omap-mailbox.h	777 B	-rw-r--r--
omapfb.h	1.22 KB	-rw-r--r--
once.h	2.8 KB	-rw-r--r--
oom.h	3.15 KB	-rw-r--r--
openvswitch.h	844 B	-rw-r--r--
oprofile.h	6.1 KB	-rw-r--r--
osq_lock.h	1.04 KB	-rw-r--r--
overflow.h	9.26 KB	-rw-r--r--
oxu210hp.h	197 B	-rw-r--r--
padata.h	5.82 KB	-rw-r--r--
page-flags-layout.h	2.99 KB	-rw-r--r--
page-flags.h	23.91 KB	-rw-r--r--
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page_counter.h	1.46 KB	-rw-r--r--
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page_idle.h	2.62 KB	-rw-r--r--
page_owner.h	2.3 KB	-rw-r--r--
page_ref.h	4.99 KB	-rw-r--r--
pageblock-flags.h	3.28 KB	-rw-r--r--
pagemap.h	19.02 KB	-rw-r--r--
pagevec.h	2.3 KB	-rw-r--r--
parman.h	2.87 KB	-rw-r--r--
parport.h	17.84 KB	-rw-r--r--
parport_pc.h	6.56 KB	-rw-r--r--
parser.h	1.04 KB	-rw-r--r--
pata_arasan_cf_data.h	1.22 KB	-rw-r--r--
patchkey.h	757 B	-rw-r--r--
path.h	572 B	-rw-r--r--
pch_dma.h	999 B	-rw-r--r--
pci-acpi.h	3.44 KB	-rw-r--r--
pci-aspm.h	882 B	-rw-r--r--
pci-ats.h	1.39 KB	-rw-r--r--
pci-dma-compat.h	4.41 KB	-rw-r--r--
pci-dma.h	454 B	-rw-r--r--
pci-ecam.h	2.54 KB	-rw-r--r--
pci-ep-cfs.h	1.09 KB	-rw-r--r--
pci-epc.h	5.38 KB	-rw-r--r--
pci-epf.h	4.83 KB	-rw-r--r--
pci.h	81.59 KB	-rw-r--r--
pci_hotplug.h	6.91 KB	-rw-r--r--
pci_ids.h	120.12 KB	-rw-r--r--
pcieport_if.h	2.35 KB	-rw-r--r--
pda_power.h	1.12 KB	-rw-r--r--
pe.h	15.6 KB	-rw-r--r--
percpu-defs.h	18.13 KB	-rw-r--r--
percpu-refcount.h	9.93 KB	-rw-r--r--
percpu-rwsem.h	4.09 KB	-rw-r--r--
percpu.h	5.02 KB	-rw-r--r--
percpu_counter.h	4.26 KB	-rw-r--r--
percpu_ida.h	2.32 KB	-rw-r--r--
perf_event.h	38.78 KB	-rw-r--r--
perf_regs.h	1.02 KB	-rw-r--r--
personality.h	393 B	-rw-r--r--
pfn.h	666 B	-rw-r--r--
pfn_t.h	3.23 KB	-rw-r--r--
phonet.h	1.12 KB	-rw-r--r--
phy.h	31.11 KB	-rw-r--r--
phy_fixed.h	1.64 KB	-rw-r--r--
phy_led_triggers.h	1.46 KB	-rw-r--r--
phylink.h	5.06 KB	-rw-r--r--
pid.h	5.77 KB	-rw-r--r--
pid_namespace.h	2.33 KB	-rw-r--r--
pim.h	2.67 KB	-rw-r--r--
pipe_fs_i.h	6.46 KB	-rw-r--r--
pkeys.h	916 B	-rw-r--r--
pktcdvd.h	5.87 KB	-rw-r--r--
pl320-ipc.h	758 B	-rw-r--r--
platform_device.h	12.43 KB	-rw-r--r--
plist.h	8.69 KB	-rw-r--r--
pm-trace.h	940 B	-rw-r--r--
pm.h	34.21 KB	-rw-r--r--
pm2301_charger.h	1.68 KB	-rw-r--r--
pm_clock.h	2.45 KB	-rw-r--r--
pm_domain.h	9.03 KB	-rw-r--r--
pm_opp.h	10.08 KB	-rw-r--r--
pm_qos.h	8.51 KB	-rw-r--r--
pm_runtime.h	8.52 KB	-rw-r--r--
pm_wakeirq.h	1.31 KB	-rw-r--r--
pm_wakeup.h	6.61 KB	-rw-r--r--
pmbus.h	1.58 KB	-rw-r--r--
pmu.h	2.34 KB	-rw-r--r--
pnfs_osd_xdr.h	9.27 KB	-rw-r--r--
pnp.h	14.89 KB	-rw-r--r--
poison.h	2.66 KB	-rw-r--r--
poll.h	3.24 KB	-rw-r--r--
posix-clock.h	4.55 KB	-rw-r--r--
posix-timers.h	3.55 KB	-rw-r--r--
posix_acl.h	3.06 KB	-rw-r--r--
posix_acl_xattr.h	1.58 KB	-rw-r--r--
power_supply.h	13.41 KB	-rw-r--r--
powercap.h	12.59 KB	-rw-r--r--
ppp-comp.h	3.1 KB	-rw-r--r--
ppp_channel.h	3.07 KB	-rw-r--r--
ppp_defs.h	454 B	-rw-r--r--
pps-gpio.h	1.01 KB	-rw-r--r--
pps_kernel.h	3.55 KB	-rw-r--r--
pr.h	566 B	-rw-r--r--
prandom.h	2.81 KB	-rw-r--r--
preempt.h	9.33 KB	-rw-r--r--
prefetch.h	1.54 KB	-rw-r--r--
prime_numbers.h	1.35 KB	-rw-r--r--
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proc_fs.h	3.26 KB	-rw-r--r--
proc_ns.h	2.44 KB	-rw-r--r--
processor.h	2.14 KB	-rw-r--r--
profile.h	2.68 KB	-rw-r--r--
projid.h	2.34 KB	-rw-r--r--
property.h	9.79 KB	-rw-r--r--
psci.h	1.87 KB	-rw-r--r--
pstore.h	7.58 KB	-rw-r--r--
pstore_ram.h	2.89 KB	-rw-r--r--
pti.h	240 B	-rw-r--r--
ptp_classify.h	2.89 KB	-rw-r--r--
ptp_clock_kernel.h	8.56 KB	-rw-r--r--
ptr_ring.h	16.29 KB	-rw-r--r--
ptrace.h	14.57 KB	-rw-r--r--
purgatory.h	589 B	-rw-r--r--
pvclock_gtod.h	548 B	-rw-r--r--
pwm.h	16.8 KB	-rw-r--r--
pwm_backlight.h	740 B	-rw-r--r--
pxa168_eth.h	728 B	-rw-r--r--
pxa2xx_ssp.h	9.8 KB	-rw-r--r--
qcom_scm.h	4.12 KB	-rw-r--r--
qnx6_fs.h	3.27 KB	-rw-r--r--
quicklist.h	2.13 KB	-rw-r--r--
quota.h	18.87 KB	-rw-r--r--
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radix-tree.h	21.77 KB	-rw-r--r--
raid_class.h	2.08 KB	-rw-r--r--
ramfs.h	762 B	-rw-r--r--
random.h	3.98 KB	-rw-r--r--
range.h	651 B	-rw-r--r--
ras.h	1.18 KB	-rw-r--r--
ratelimit.h	2.81 KB	-rw-r--r--
rational.h	639 B	-rw-r--r--
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rcu_node_tree.h	4.34 KB	-rw-r--r--
rcu_segcblist.h	3.26 KB	-rw-r--r--
rcu_sync.h	2.57 KB	-rw-r--r--
rculist.h	23.53 KB	-rw-r--r--
rculist_bl.h	4.36 KB	-rw-r--r--
rculist_nulls.h	6.17 KB	-rw-r--r--
rcupdate.h	33.26 KB	-rw-r--r--
rcupdate_wait.h	1.63 KB	-rw-r--r--
rcutiny.h	3.64 KB	-rw-r--r--
rcutree.h	3.56 KB	-rw-r--r--
rcuwait.h	1.82 KB	-rw-r--r--
reboot-mode.h	600 B	-rw-r--r--
reboot.h	2.05 KB	-rw-r--r--
reciprocal_div.h	1.01 KB	-rw-r--r--
refcount.h	2.6 KB	-rw-r--r--
regmap.h	42.34 KB	-rw-r--r--
regset.h	15.08 KB	-rw-r--r--
relay.h	8.84 KB	-rw-r--r--
remoteproc.h	18.48 KB	-rw-r--r--
reservation.h	8.12 KB	-rw-r--r--
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reset.h	13.69 KB	-rw-r--r--
resource.h	339 B	-rw-r--r--
resource_ext.h	2.22 KB	-rw-r--r--
restart_block.h	1.11 KB	-rw-r--r--
rfkill.h	9.89 KB	-rw-r--r--
rhashtable.h	38.24 KB	-rw-r--r--
ring_buffer.h	6.79 KB	-rw-r--r--
rio.h	19.23 KB	-rw-r--r--
rio_drv.h	14.71 KB	-rw-r--r--
rio_ids.h	1.29 KB	-rw-r--r--
rio_regs.h	19.27 KB	-rw-r--r--
rmap.h	9.08 KB	-rw-r--r--
rmi.h	12.13 KB	-rw-r--r--
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rodata_test.h	559 B	-rw-r--r--
root_dev.h	579 B	-rw-r--r--
rpmsg.h	8.37 KB	-rw-r--r--
rslib.h	2.99 KB	-rw-r--r--
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rtmutex.h	3.47 KB	-rw-r--r--
rtnetlink.h	4.27 KB	-rw-r--r--
rtsx_common.h	1.44 KB	-rw-r--r--
rtsx_pci.h	40.14 KB	-rw-r--r--
rtsx_usb.h	15.95 KB	-rw-r--r--
rwlock.h	4.35 KB	-rw-r--r--
rwlock_api_smp.h	7.67 KB	-rw-r--r--
rwlock_types.h	1.12 KB	-rw-r--r--
rwsem-spinlock.h	1.58 KB	-rw-r--r--
rwsem.h	6 KB	-rw-r--r--
s3c_adc_battery.h	971 B	-rw-r--r--
sa11x0-dma.h	572 B	-rw-r--r--
sbitmap.h	13.56 KB	-rw-r--r--
scatterlist.h	13.29 KB	-rw-r--r--
scc.h	2.84 KB	-rw-r--r--
sched.h	47.45 KB	-rw-r--r--
sched_clock.h	661 B	-rw-r--r--
scif.h	58.85 KB	-rw-r--r--
scpi_protocol.h	2.58 KB	-rw-r--r--
screen_info.h	191 B	-rw-r--r--
sctp.h	21.92 KB	-rw-r--r--
scx200.h	1.82 KB	-rw-r--r--
scx200_gpio.h	2.38 KB	-rw-r--r--
sdb.h	4.17 KB	-rw-r--r--
sdla.h	6.9 KB	-rw-r--r--
seccomp.h	2.66 KB	-rw-r--r--
securebits.h	239 B	-rw-r--r--
security.h	47.81 KB	-rw-r--r--
sed-opal.h	1.94 KB	-rw-r--r--
seg6.h	121 B	-rw-r--r--
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seg6_hmac.h	136 B	-rw-r--r--
seg6_iptunnel.h	148 B	-rw-r--r--
seg6_local.h	100 B	-rw-r--r--
selection.h	1.41 KB	-rw-r--r--
selinux.h	910 B	-rw-r--r--
sem.h	2.02 KB	-rw-r--r--
semaphore.h	1.36 KB	-rw-r--r--
seq_buf.h	3.15 KB	-rw-r--r--
seq_file.h	6.68 KB	-rw-r--r--
seq_file_net.h	713 B	-rw-r--r--
seqlock.h	16.48 KB	-rw-r--r--
seqno-fence.h	3.96 KB	-rw-r--r--
serdev.h	9.48 KB	-rw-r--r--
serial.h	630 B	-rw-r--r--
serial_8250.h	6.01 KB	-rw-r--r--
serial_bcm63xx.h	4.73 KB	-rw-r--r--
serial_core.h	17.72 KB	-rw-r--r--
serial_max3100.h	1.39 KB	-rw-r--r--
serial_pnx8xxx.h	2.61 KB	-rw-r--r--
serial_s3c.h	9.24 KB	-rw-r--r--
serial_sci.h	1.57 KB	-rw-r--r--
serio.h	4.42 KB	-rw-r--r--
set_memory.h	740 B	-rw-r--r--
sfi.h	5.75 KB	-rw-r--r--
sfi_acpi.h	3.39 KB	-rw-r--r--
sfp.h	10.4 KB	-rw-r--r--
sh_clk.h	5.96 KB	-rw-r--r--
sh_dma.h	3.61 KB	-rw-r--r--
sh_eth.h	417 B	-rw-r--r--
sh_intc.h	3.42 KB	-rw-r--r--
sh_timer.h	172 B	-rw-r--r--
shdma-base.h	4.41 KB	-rw-r--r--
shm.h	1.71 KB	-rw-r--r--
shmem_fs.h	5.33 KB	-rw-r--r--
shrinker.h	2.82 KB	-rw-r--r--
signal.h	12.57 KB	-rw-r--r--
signal_types.h	1.13 KB	-rw-r--r--
signalfd.h	817 B	-rw-r--r--
siphash.h	5.59 KB	-rw-r--r--
sirfsoc_dma.h	162 B	-rw-r--r--
sizes.h	1.26 KB	-rw-r--r--
skb_array.h	5.17 KB	-rw-r--r--
skbuff.h	120.16 KB	-rw-r--r--
slab.h	21.45 KB	-rw-r--r--
slab_def.h	2.37 KB	-rw-r--r--
slub_def.h	5.44 KB	-rw-r--r--
sm501-regs.h	11.76 KB	-rw-r--r--
sm501.h	4.63 KB	-rw-r--r--
smc911x.h	294 B	-rw-r--r--
smc91x.h	1.57 KB	-rw-r--r--
smp.h	5.67 KB	-rw-r--r--
smpboot.h	2.17 KB	-rw-r--r--
smsc911x.h	2.29 KB	-rw-r--r--
smscphy.h	1.25 KB	-rw-r--r--
sock_diag.h	2.16 KB	-rw-r--r--
socket.h	11.35 KB	-rw-r--r--
sonet.h	469 B	-rw-r--r--
sony-laptop.h	1.28 KB	-rw-r--r--
sonypi.h	2.35 KB	-rw-r--r--
sort.h	247 B	-rw-r--r--
sound.h	807 B	-rw-r--r--
soundcard.h	1.59 KB	-rw-r--r--
spinlock.h	11.04 KB	-rw-r--r--
spinlock_api_smp.h	5.4 KB	-rw-r--r--
spinlock_api_up.h	3.31 KB	-rw-r--r--
spinlock_types.h	1.99 KB	-rw-r--r--
spinlock_types_up.h	726 B	-rw-r--r--
spinlock_up.h	2.16 KB	-rw-r--r--
splice.h	3.01 KB	-rw-r--r--
spmi.h	5.95 KB	-rw-r--r--
sram.h	844 B	-rw-r--r--
srcu.h	6.38 KB	-rw-r--r--
srcutiny.h	3.18 KB	-rw-r--r--
srcutree.h	5.15 KB	-rw-r--r--
ssbi.h	1.11 KB	-rw-r--r--
stackdepot.h	967 B	-rw-r--r--
stackprotector.h	324 B	-rw-r--r--
stacktrace.h	1.45 KB	-rw-r--r--
start_kernel.h	334 B	-rw-r--r--
stat.h	1.18 KB	-rw-r--r--
statfs.h	1.31 KB	-rw-r--r--
static_key.h	30 B	-rw-r--r--
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ste_modem_shm.h	1.59 KB	-rw-r--r--
stm.h	4.75 KB	-rw-r--r--
stmmac.h	5.39 KB	-rw-r--r--
stmp3xxx_rtc_wdt.h	332 B	-rw-r--r--
stmp_device.h	619 B	-rw-r--r--
stop_machine.h	4.68 KB	-rw-r--r--
string.h	14.97 KB	-rw-r--r--
string_helpers.h	2.17 KB	-rw-r--r--
stringhash.h	2.65 KB	-rw-r--r--
stringify.h	341 B	-rw-r--r--
sudmac.h	1.24 KB	-rw-r--r--
sungem_phy.h	3.94 KB	-rw-r--r--
sunserialcore.h	1.08 KB	-rw-r--r--
sunxi-rsb.h	2.89 KB	-rw-r--r--
superhyway.h	2.81 KB	-rw-r--r--
suspend.h	19.13 KB	-rw-r--r--
svga.h	3.75 KB	-rw-r--r--
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swab.h	569 B	-rw-r--r--
swait.h	9.33 KB	-rw-r--r--
swap.h	21.58 KB	-rw-r--r--
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swap_slots.h	840 B	-rw-r--r--
swapfile.h	556 B	-rw-r--r--
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switchtec.h	8.1 KB	-rw-r--r--
sxgbe_platform.h	1.34 KB	-rw-r--r--
sync_file.h	1.57 KB	-rw-r--r--
synclink.h	989 B	-rw-r--r--
sys.h	960 B	-rw-r--r--
sys_soc.h	1.21 KB	-rw-r--r--
syscalls.h	39.85 KB	-rw-r--r--
syscore_ops.h	635 B	-rw-r--r--
sysctl.h	7.55 KB	-rw-r--r--
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syslog.h	1.89 KB	-rw-r--r--
sysrq.h	1.79 KB	-rw-r--r--
sysv_fs.h	9.03 KB	-rw-r--r--
t10-pi.h	1.21 KB	-rw-r--r--
task_io_accounting.h	1.13 KB	-rw-r--r--
task_io_accounting_ops.h	2.55 KB	-rw-r--r--
task_work.h	617 B	-rw-r--r--
taskstats_kern.h	957 B	-rw-r--r--
tboot.h	3.99 KB	-rw-r--r--
tc.h	3.45 KB	-rw-r--r--
tca6416_keypad.h	847 B	-rw-r--r--
tcp.h	15.13 KB	-rw-r--r--
tee_drv.h	8.27 KB	-rw-r--r--
textsearch.h	4.73 KB	-rw-r--r--
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tfrc.h	1.89 KB	-rw-r--r--
thermal.h	19.62 KB	-rw-r--r--
thinkpad_acpi.h	320 B	-rw-r--r--
thread_info.h	4.1 KB	-rw-r--r--
threads.h	1.28 KB	-rw-r--r--
thunderbolt.h	19.02 KB	-rw-r--r--
ti_wilink_st.h	14.07 KB	-rw-r--r--
tick.h	7.88 KB	-rw-r--r--
tifm.h	4.8 KB	-rw-r--r--
timb_dma.h	1.74 KB	-rw-r--r--
timb_gpio.h	1.28 KB	-rw-r--r--
time.h	3.71 KB	-rw-r--r--
time32.h	5.64 KB	-rw-r--r--
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timecounter.h	4.58 KB	-rw-r--r--
timekeeper_internal.h	5.01 KB	-rw-r--r--
timekeeping.h	5.17 KB	-rw-r--r--
timekeeping32.h	3.13 KB	-rw-r--r--
timer.h	6.74 KB	-rw-r--r--
timerfd.h	508 B	-rw-r--r--
timeriomem-rng.h	475 B	-rw-r--r--
timerqueue.h	1.19 KB	-rw-r--r--
timex.h	6.61 KB	-rw-r--r--
tnum.h	2.74 KB	-rw-r--r--
topology.h	4.85 KB	-rw-r--r--
torture.h	3.58 KB	-rw-r--r--
toshiba.h	904 B	-rw-r--r--
tpm.h	3 KB	-rw-r--r--
tpm_command.h	847 B	-rw-r--r--
trace.h	964 B	-rw-r--r--
trace_clock.h	667 B	-rw-r--r--
trace_events.h	16.65 KB	-rw-r--r--
trace_seq.h	3.74 KB	-rw-r--r--
tracefs.h	1.19 KB	-rw-r--r--
tracehook.h	7.08 KB	-rw-r--r--
tracepoint-defs.h	778 B	-rw-r--r--
tracepoint.h	16.26 KB	-rw-r--r--
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ts-nbus.h	532 B	-rw-r--r--
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typecheck.h	624 B	-rw-r--r--
types.h	5.61 KB	-rw-r--r--
u64_stats_sync.h	5.43 KB	-rw-r--r--
uaccess.h	9.95 KB	-rw-r--r--
ucb1400.h	4.26 KB	-rw-r--r--
ucs2_string.h	662 B	-rw-r--r--
udp.h	3.65 KB	-rw-r--r--
uidgid.h	4.07 KB	-rw-r--r--
uio.h	7.66 KB	-rw-r--r--
uio_driver.h	4.07 KB	-rw-r--r--
umh.h	1.79 KB	-rw-r--r--
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usb.h	75.97 KB	-rw-r--r--
usb_usual.h	3.58 KB	-rw-r--r--
usbdevice_fs.h	2.18 KB	-rw-r--r--
user-return-notifier.h	1.18 KB	-rw-r--r--
user.h	22 B	-rw-r--r--
user_namespace.h	4.34 KB	-rw-r--r--
userfaultfd_k.h	3.57 KB	-rw-r--r--
util_macros.h	1.17 KB	-rw-r--r--
uts.h	388 B	-rw-r--r--
utsname.h	1.72 KB	-rw-r--r--
uuid.h	2.35 KB	-rw-r--r--
uwb.h	25.22 KB	-rw-r--r--
verification.h	1.57 KB	-rw-r--r--
vermagic.h	1.05 KB	-rw-r--r--
vexpress.h	1.44 KB	-rw-r--r--
vfio.h	6.32 KB	-rw-r--r--
vfs.h	116 B	-rw-r--r--
vga_switcheroo.h	8.4 KB	-rw-r--r--
vgaarb.h	5.12 KB	-rw-r--r--
via-core.h	7.27 KB	-rw-r--r--
via-gpio.h	334 B	-rw-r--r--
via.h	932 B	-rw-r--r--
via_i2c.h	1.48 KB	-rw-r--r--
videodev2.h	2.68 KB	-rw-r--r--
virtio.h	7.07 KB	-rw-r--r--
virtio_byteorder.h	1.46 KB	-rw-r--r--
virtio_caif.h	492 B	-rw-r--r--
virtio_config.h	12.82 KB	-rw-r--r--
virtio_console.h	1.93 KB	-rw-r--r--
virtio_net.h	5.33 KB	-rw-r--r--
virtio_ring.h	2.96 KB	-rw-r--r--
virtio_vsock.h	5.05 KB	-rw-r--r--
vlynq.h	3.88 KB	-rw-r--r--
vm_event_item.h	2.96 KB	-rw-r--r--
vm_sockets.h	703 B	-rw-r--r--
vmacache.h	932 B	-rw-r--r--
vmalloc.h	6.29 KB	-rw-r--r--
vme.h	5.66 KB	-rw-r--r--
vmpressure.h	1.7 KB	-rw-r--r--
vmstat.h	10.93 KB	-rw-r--r--
vmw_vmci_api.h	3.19 KB	-rw-r--r--
vmw_vmci_defs.h	27.93 KB	-rw-r--r--
vringh.h	7.76 KB	-rw-r--r--
vt.h	611 B	-rw-r--r--
vt_buffer.h	1.49 KB	-rw-r--r--
vt_kern.h	6.21 KB	-rw-r--r--
vtime.h	3.57 KB	-rw-r--r--
w1-gpio.h	729 B	-rw-r--r--
w1.h	9.13 KB	-rw-r--r--
wait.h	36.36 KB	-rw-r--r--
wait_bit.h	9.85 KB	-rw-r--r--
wanrouter.h	210 B	-rw-r--r--
watchdog.h	7.81 KB	-rw-r--r--
win_minmax.h	832 B	-rw-r--r--
wireless.h	1.4 KB	-rw-r--r--
wkup_m3_ipc.h	1.53 KB	-rw-r--r--
wl12xx.h	1.39 KB	-rw-r--r--
wm97xx.h	10.61 KB	-rw-r--r--
wmi.h	1.94 KB	-rw-r--r--
workqueue.h	21.56 KB	-rw-r--r--
writeback.h	12.13 KB	-rw-r--r--
ww_mutex.h	12.42 KB	-rw-r--r--
xattr.h	3.38 KB	-rw-r--r--
xxhash.h	7.65 KB	-rw-r--r--
xz.h	11.16 KB	-rw-r--r--
yam.h	2.82 KB	-rw-r--r--
z2_battery.h	318 B	-rw-r--r--
zbud.h	740 B	-rw-r--r--
zconf.h	1.73 KB	-rw-r--r--
zlib.h	27.97 KB	-rw-r--r--
zorro.h	3.94 KB	-rw-r--r--
zpool.h	2.99 KB	-rw-r--r--
zsmalloc.h	1.64 KB	-rw-r--r--
zstd.h	48.64 KB	-rw-r--r--
zutil.h	2.73 KB	-rw-r--r--

Code Editor : blkdev.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_BLKDEV_H
#define _LINUX_BLKDEV_H

#include <linux/sched.h>
#include <linux/sched/clock.h>

#ifdef CONFIG_BLOCK

#include <linux/major.h>
#include <linux/genhd.h>
#include <linux/list.h>
#include <linux/llist.h>
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <linux/pagemap.h>
#include <linux/backing-dev-defs.h>
#include <linux/wait.h>
#include <linux/mempool.h>
#include <linux/pfn.h>
#include <linux/bio.h>
#include <linux/stringify.h>
#include <linux/gfp.h>
#include <linux/bsg.h>
#include <linux/smp.h>
#include <linux/rcupdate.h>
#include <linux/percpu-refcount.h>
#include <linux/scatterlist.h>
#include <linux/blkzoned.h>

struct module;
struct scsi_ioctl_command;

struct request_queue;
struct elevator_queue;
struct blk_trace;
struct request;
struct sg_io_hdr;
struct bsg_job;
struct blkcg_gq;
struct blk_flush_queue;
struct pr_ops;
struct rq_wb;
struct blk_queue_stats;
struct blk_stat_callback;

#define BLKDEV_MIN_RQ	4
#define BLKDEV_MAX_RQ	128	/* Default maximum */

/* Must be consisitent with blk_mq_poll_stats_bkt() */
#define BLK_MQ_POLL_STATS_BKTS 16

/*
 * Maximum number of blkcg policies allowed to be registered concurrently.
 * Defined here to simplify include dependency.
 */
#define BLKCG_MAX_POLS		3

static inline int blk_validate_block_size(unsigned int bsize)
{
	if (bsize < 512 || bsize > PAGE_SIZE || !is_power_of_2(bsize))
		return -EINVAL;

return 0;
}

typedef void (rq_end_io_fn)(struct request *, blk_status_t);

#define BLK_RL_SYNCFULL		(1U << 0)
#define BLK_RL_ASYNCFULL	(1U << 1)

struct request_list {
	struct request_queue	*q;	/* the queue this rl belongs to */
#ifdef CONFIG_BLK_CGROUP
	struct blkcg_gq		*blkg;	/* blkg this request pool belongs to */
#endif
	/*
	 * count[], starved[], and wait[] are indexed by
	 * BLK_RW_SYNC/BLK_RW_ASYNC
	 */
	int			count[2];
	int			starved[2];
	mempool_t		*rq_pool;
	wait_queue_head_t	wait[2];
	unsigned int		flags;
};

/*
 * request flags */
typedef __u32 __bitwise req_flags_t;

/* elevator knows about this request */
#define RQF_SORTED		((__force req_flags_t)(1 << 0))
/* drive already may have started this one */
#define RQF_STARTED		((__force req_flags_t)(1 << 1))
/* uses tagged queueing */
#define RQF_QUEUED		((__force req_flags_t)(1 << 2))
/* may not be passed by ioscheduler */
#define RQF_SOFTBARRIER		((__force req_flags_t)(1 << 3))
/* request for flush sequence */
#define RQF_FLUSH_SEQ		((__force req_flags_t)(1 << 4))
/* merge of different types, fail separately */
#define RQF_MIXED_MERGE		((__force req_flags_t)(1 << 5))
/* track inflight for MQ */
#define RQF_MQ_INFLIGHT		((__force req_flags_t)(1 << 6))
/* don't call prep for this one */
#define RQF_DONTPREP		((__force req_flags_t)(1 << 7))
/* set for "ide_preempt" requests and also for requests for which the SCSI
   "quiesce" state must be ignored. */
#define RQF_PREEMPT		((__force req_flags_t)(1 << 8))
/* contains copies of user pages */
#define RQF_COPY_USER		((__force req_flags_t)(1 << 9))
/* vaguely specified driver internal error.  Ignored by the block layer */
#define RQF_FAILED		((__force req_flags_t)(1 << 10))
/* don't warn about errors */
#define RQF_QUIET		((__force req_flags_t)(1 << 11))
/* elevator private data attached */
#define RQF_ELVPRIV		((__force req_flags_t)(1 << 12))
/* account I/O stat */
#define RQF_IO_STAT		((__force req_flags_t)(1 << 13))
/* request came from our alloc pool */
#define RQF_ALLOCED		((__force req_flags_t)(1 << 14))
/* runtime pm request */
#define RQF_PM			((__force req_flags_t)(1 << 15))
/* on IO scheduler merge hash */
#define RQF_HASHED		((__force req_flags_t)(1 << 16))
/* IO stats tracking on */
#define RQF_STATS		((__force req_flags_t)(1 << 17))
/* Look at ->special_vec for the actual data payload instead of the
   bio chain. */
#define RQF_SPECIAL_PAYLOAD	((__force req_flags_t)(1 << 18))

/* flags that prevent us from merging requests: */
#define RQF_NOMERGE_FLAGS \
	(RQF_STARTED | RQF_SOFTBARRIER | RQF_FLUSH_SEQ | RQF_SPECIAL_PAYLOAD)

/*
 * Try to put the fields that are referenced together in the same cacheline.
 *
 * If you modify this structure, make sure to update blk_rq_init() and
 * especially blk_mq_rq_ctx_init() to take care of the added fields.
 */
struct request {
	struct list_head queuelist;
	union {
		struct __call_single_data csd;
		u64 fifo_time;
	};

struct request_queue *q;
	struct blk_mq_ctx *mq_ctx;

int cpu;
	unsigned int cmd_flags;		/* op and common flags */
	req_flags_t rq_flags;

int internal_tag;

unsigned long atomic_flags;

/* the following two fields are internal, NEVER access directly */
	unsigned int __data_len;	/* total data len */
	int tag;
	sector_t __sector;		/* sector cursor */

struct bio *bio;
	struct bio *biotail;

/*
	 * The hash is used inside the scheduler, and killed once the
	 * request reaches the dispatch list. The ipi_list is only used
	 * to queue the request for softirq completion, which is long
	 * after the request has been unhashed (and even removed from
	 * the dispatch list).
	 */
	union {
		struct hlist_node hash;	/* merge hash */
		struct list_head ipi_list;
	};

/*
	 * The rb_node is only used inside the io scheduler, requests
	 * are pruned when moved to the dispatch queue. So let the
	 * completion_data share space with the rb_node.
	 */
	union {
		struct rb_node rb_node;	/* sort/lookup */
		struct bio_vec special_vec;
		void *completion_data;
		int error_count; /* for legacy drivers, don't use */
	};

/*
	 * Three pointers are available for the IO schedulers, if they need
	 * more they have to dynamically allocate it.  Flush requests are
	 * never put on the IO scheduler. So let the flush fields share
	 * space with the elevator data.
	 */
	union {
		struct {
			struct io_cq		*icq;
			void			*priv[2];
		} elv;

struct {
			unsigned int		seq;
			struct list_head	list;
			rq_end_io_fn		*saved_end_io;
		} flush;
	};

struct gendisk *rq_disk;
	struct hd_struct *part;
	unsigned long start_time;
	struct blk_issue_stat issue_stat;
#ifdef CONFIG_BLK_CGROUP
	struct request_list *rl;		/* rl this rq is alloced from */
	unsigned long long start_time_ns;
	unsigned long long io_start_time_ns;    /* when passed to hardware */
#endif
	/* Number of scatter-gather DMA addr+len pairs after
	 * physical address coalescing is performed.
	 */
	unsigned short nr_phys_segments;
#if defined(CONFIG_BLK_DEV_INTEGRITY)
	unsigned short nr_integrity_segments;
#endif

unsigned short ioprio;

unsigned int timeout;

void *special;		/* opaque pointer available for LLD use */

unsigned int extra_len;	/* length of alignment and padding */

unsigned short write_hint;

unsigned long deadline;
	struct list_head timeout_list;

/*
	 * completion callback.
	 */
	rq_end_io_fn *end_io;
	void *end_io_data;

/* for bidi */
	struct request *next_rq;
};

static inline bool blk_op_is_scsi(unsigned int op)
{
	return op == REQ_OP_SCSI_IN || op == REQ_OP_SCSI_OUT;
}

static inline bool blk_op_is_private(unsigned int op)
{
	return op == REQ_OP_DRV_IN || op == REQ_OP_DRV_OUT;
}

static inline bool blk_rq_is_scsi(struct request *rq)
{
	return blk_op_is_scsi(req_op(rq));
}

static inline bool blk_rq_is_private(struct request *rq)
{
	return blk_op_is_private(req_op(rq));
}

static inline bool blk_rq_is_passthrough(struct request *rq)
{
	return blk_rq_is_scsi(rq) || blk_rq_is_private(rq);
}

static inline bool bio_is_passthrough(struct bio *bio)
{
	unsigned op = bio_op(bio);

return blk_op_is_scsi(op) || blk_op_is_private(op);
}

static inline unsigned short req_get_ioprio(struct request *req)
{
	return req->ioprio;
}

#include <linux/elevator.h>

struct blk_queue_ctx;

typedef void (request_fn_proc) (struct request_queue *q);
typedef blk_qc_t (make_request_fn) (struct request_queue *q, struct bio *bio);
typedef bool (poll_q_fn) (struct request_queue *q, blk_qc_t);
typedef int (prep_rq_fn) (struct request_queue *, struct request *);
typedef void (unprep_rq_fn) (struct request_queue *, struct request *);

struct bio_vec;
typedef void (softirq_done_fn)(struct request *);
typedef int (dma_drain_needed_fn)(struct request *);
typedef int (lld_busy_fn) (struct request_queue *q);
typedef int (bsg_job_fn) (struct bsg_job *);
typedef int (init_rq_fn)(struct request_queue *, struct request *, gfp_t);
typedef void (exit_rq_fn)(struct request_queue *, struct request *);

enum blk_eh_timer_return {
	BLK_EH_NOT_HANDLED,
	BLK_EH_HANDLED,
	BLK_EH_RESET_TIMER,
};

typedef enum blk_eh_timer_return (rq_timed_out_fn)(struct request *);

enum blk_queue_state {
	Queue_down,
	Queue_up,
};

struct blk_queue_tag {
	struct request **tag_index;	/* map of busy tags */
	unsigned long *tag_map;		/* bit map of free/busy tags */
	int max_depth;			/* what we will send to device */
	int real_max_depth;		/* what the array can hold */
	atomic_t refcnt;		/* map can be shared */
	int alloc_policy;		/* tag allocation policy */
	int next_tag;			/* next tag */
};
#define BLK_TAG_ALLOC_FIFO 0 /* allocate starting from 0 */
#define BLK_TAG_ALLOC_RR 1 /* allocate starting from last allocated tag */

#define BLK_SCSI_MAX_CMDS	(256)
#define BLK_SCSI_CMD_PER_LONG	(BLK_SCSI_MAX_CMDS / (sizeof(long) * 8))

/*
 * Zoned block device models (zoned limit).
 */
enum blk_zoned_model {
	BLK_ZONED_NONE,	/* Regular block device */
	BLK_ZONED_HA,	/* Host-aware zoned block device */
	BLK_ZONED_HM,	/* Host-managed zoned block device */
};

struct queue_limits {
	unsigned long		bounce_pfn;
	unsigned long		seg_boundary_mask;
	unsigned long		virt_boundary_mask;

unsigned int		max_hw_sectors;
	unsigned int		max_dev_sectors;
	unsigned int		chunk_sectors;
	unsigned int		max_sectors;
	unsigned int		max_segment_size;
	unsigned int		physical_block_size;
	unsigned int		logical_block_size;
	unsigned int		alignment_offset;
	unsigned int		io_min;
	unsigned int		io_opt;
	unsigned int		max_discard_sectors;
	unsigned int		max_hw_discard_sectors;
	unsigned int		max_write_same_sectors;
	unsigned int		max_write_zeroes_sectors;
	unsigned int		discard_granularity;
	unsigned int		discard_alignment;

unsigned short		max_segments;
	unsigned short		max_integrity_segments;
	unsigned short		max_discard_segments;

unsigned char		misaligned;
	unsigned char		discard_misaligned;
	unsigned char		cluster;
	unsigned char		raid_partial_stripes_expensive;
	enum blk_zoned_model	zoned;
};

#ifdef CONFIG_BLK_DEV_ZONED

struct blk_zone_report_hdr {
	unsigned int	nr_zones;
	u8		padding[60];
};

extern int blkdev_report_zones(struct block_device *bdev,
			       sector_t sector, struct blk_zone *zones,
			       unsigned int *nr_zones, gfp_t gfp_mask);
extern int blkdev_reset_zones(struct block_device *bdev, sector_t sectors,
			      sector_t nr_sectors, gfp_t gfp_mask);

extern int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
				     unsigned int cmd, unsigned long arg);
extern int blkdev_reset_zones_ioctl(struct block_device *bdev, fmode_t mode,
				    unsigned int cmd, unsigned long arg);

#else /* CONFIG_BLK_DEV_ZONED */

static inline int blkdev_report_zones_ioctl(struct block_device *bdev,
					    fmode_t mode, unsigned int cmd,
					    unsigned long arg)
{
	return -ENOTTY;
}

static inline int blkdev_reset_zones_ioctl(struct block_device *bdev,
					   fmode_t mode, unsigned int cmd,
					   unsigned long arg)
{
	return -ENOTTY;
}

#endif /* CONFIG_BLK_DEV_ZONED */

struct request_queue {
	/*
	 * Together with queue_head for cacheline sharing
	 */
	struct list_head	queue_head;
	struct request		*last_merge;
	struct elevator_queue	*elevator;
	int			nr_rqs[2];	/* # allocated [a]sync rqs */
	int			nr_rqs_elvpriv;	/* # allocated rqs w/ elvpriv */

atomic_t		shared_hctx_restart;

struct blk_queue_stats	*stats;
	struct rq_wb		*rq_wb;

/*
	 * If blkcg is not used, @q->root_rl serves all requests.  If blkcg
	 * is used, root blkg allocates from @q->root_rl and all other
	 * blkgs from their own blkg->rl.  Which one to use should be
	 * determined using bio_request_list().
	 */
	struct request_list	root_rl;

request_fn_proc		*request_fn;
	make_request_fn		*make_request_fn;
	poll_q_fn		*poll_fn;
	prep_rq_fn		*prep_rq_fn;
	unprep_rq_fn		*unprep_rq_fn;
	softirq_done_fn		*softirq_done_fn;
	rq_timed_out_fn		*rq_timed_out_fn;
	dma_drain_needed_fn	*dma_drain_needed;
	lld_busy_fn		*lld_busy_fn;
	/* Called just after a request is allocated */
	init_rq_fn		*init_rq_fn;
	/* Called just before a request is freed */
	exit_rq_fn		*exit_rq_fn;
	/* Called from inside blk_get_request() */
	void (*initialize_rq_fn)(struct request *rq);

const struct blk_mq_ops	*mq_ops;

unsigned int		*mq_map;

/* sw queues */
	struct blk_mq_ctx __percpu	*queue_ctx;
	unsigned int		nr_queues;

unsigned int		queue_depth;

/* hw dispatch queues */
	struct blk_mq_hw_ctx	**queue_hw_ctx;
	unsigned int		nr_hw_queues;

/*
	 * Dispatch queue sorting
	 */
	sector_t		end_sector;
	struct request		*boundary_rq;

/*
	 * Delayed queue handling
	 */
	struct delayed_work	delay_work;

struct backing_dev_info	*backing_dev_info;

/*
	 * The queue owner gets to use this for whatever they like.
	 * ll_rw_blk doesn't touch it.
	 */
	void			*queuedata;

/*
	 * various queue flags, see QUEUE_* below
	 */
	unsigned long		queue_flags;

/*
	 * ida allocated id for this queue.  Used to index queues from
	 * ioctx.
	 */
	int			id;

/*
	 * queue needs bounce pages for pages above this limit
	 */
	gfp_t			bounce_gfp;

/*
	 * protects queue structures from reentrancy. ->__queue_lock should
	 * _never_ be used directly, it is queue private. always use
	 * ->queue_lock.
	 */
	spinlock_t		__queue_lock;
	spinlock_t		*queue_lock;

/*
	 * queue kobject
	 */
	struct kobject kobj;

/*
	 * mq queue kobject
	 */
	struct kobject mq_kobj;

#ifdef  CONFIG_BLK_DEV_INTEGRITY
	struct blk_integrity integrity;
#endif	/* CONFIG_BLK_DEV_INTEGRITY */

#ifdef CONFIG_PM
	struct device		*dev;
	int			rpm_status;
	unsigned int		nr_pending;
#endif

/*
	 * queue settings
	 */
	unsigned long		nr_requests;	/* Max # of requests */
	unsigned int		nr_congestion_on;
	unsigned int		nr_congestion_off;
	unsigned int		nr_batching;

unsigned int		dma_drain_size;
	void			*dma_drain_buffer;
	unsigned int		dma_pad_mask;
	unsigned int		dma_alignment;

struct blk_queue_tag	*queue_tags;
	struct list_head	tag_busy_list;

unsigned int		nr_sorted;
	unsigned int		in_flight[2];

/*
	 * Number of active block driver functions for which blk_drain_queue()
	 * must wait. Must be incremented around functions that unlock the
	 * queue_lock internally, e.g. scsi_request_fn().
	 */
	unsigned int		request_fn_active;

unsigned int		rq_timeout;
	int			poll_nsec;

struct blk_stat_callback	*poll_cb;
	struct blk_rq_stat	poll_stat[BLK_MQ_POLL_STATS_BKTS];

struct timer_list	timeout;
	struct work_struct	timeout_work;
	struct list_head	timeout_list;

struct list_head	icq_list;
#ifdef CONFIG_BLK_CGROUP
	DECLARE_BITMAP		(blkcg_pols, BLKCG_MAX_POLS);
	struct blkcg_gq		*root_blkg;
	struct list_head	blkg_list;
#endif

struct queue_limits	limits;

/*
	 * sg stuff
	 */
	unsigned int		sg_timeout;
	unsigned int		sg_reserved_size;
	int			node;
#ifdef CONFIG_BLK_DEV_IO_TRACE
	struct blk_trace __rcu	*blk_trace;
	struct mutex		blk_trace_mutex;
#endif
	/*
	 * for flush operations
	 */
	struct blk_flush_queue	*fq;

struct list_head	requeue_list;
	spinlock_t		requeue_lock;
	struct delayed_work	requeue_work;

struct mutex		sysfs_lock;

int			bypass_depth;
	atomic_t		mq_freeze_depth;

#if defined(CONFIG_BLK_DEV_BSG)
	bsg_job_fn		*bsg_job_fn;
	struct bsg_class_device bsg_dev;
#endif

#ifdef CONFIG_BLK_DEV_THROTTLING
	/* Throttle data */
	struct throtl_data *td;
#endif
	struct rcu_head		rcu_head;
	wait_queue_head_t	mq_freeze_wq;
	struct percpu_ref	q_usage_counter;
	struct list_head	all_q_node;

struct blk_mq_tag_set	*tag_set;
	struct list_head	tag_set_list;
	struct bio_set		*bio_split;

#ifdef CONFIG_BLK_DEBUG_FS
	struct dentry		*debugfs_dir;
	struct dentry		*sched_debugfs_dir;
#endif

bool			mq_sysfs_init_done;

size_t			cmd_size;
	void			*rq_alloc_data;

struct work_struct	release_work;

#define BLK_MAX_WRITE_HINTS	5
	u64			write_hints[BLK_MAX_WRITE_HINTS];
};

#define QUEUE_FLAG_QUEUED	0	/* uses generic tag queueing */
#define QUEUE_FLAG_STOPPED	1	/* queue is stopped */
#define QUEUE_FLAG_DYING	2	/* queue being torn down */
#define QUEUE_FLAG_BYPASS	3	/* act as dumb FIFO queue */
#define QUEUE_FLAG_BIDI		4	/* queue supports bidi requests */
#define QUEUE_FLAG_NOMERGES     5	/* disable merge attempts */
#define QUEUE_FLAG_SAME_COMP	6	/* complete on same CPU-group */
#define QUEUE_FLAG_FAIL_IO	7	/* fake timeout */
#define QUEUE_FLAG_NONROT	9	/* non-rotational device (SSD) */
#define QUEUE_FLAG_VIRT        QUEUE_FLAG_NONROT /* paravirt device */
#define QUEUE_FLAG_IO_STAT     10	/* do IO stats */
#define QUEUE_FLAG_DISCARD     11	/* supports DISCARD */
#define QUEUE_FLAG_NOXMERGES   12	/* No extended merges */
#define QUEUE_FLAG_ADD_RANDOM  13	/* Contributes to random pool */
#define QUEUE_FLAG_SECERASE    14	/* supports secure erase */
#define QUEUE_FLAG_SAME_FORCE  15	/* force complete on same CPU */
#define QUEUE_FLAG_DEAD        16	/* queue tear-down finished */
#define QUEUE_FLAG_INIT_DONE   17	/* queue is initialized */
#define QUEUE_FLAG_NO_SG_MERGE 18	/* don't attempt to merge SG segments*/
#define QUEUE_FLAG_POLL	       19	/* IO polling enabled if set */
#define QUEUE_FLAG_WC	       20	/* Write back caching */
#define QUEUE_FLAG_FUA	       21	/* device supports FUA writes */
#define QUEUE_FLAG_FLUSH_NQ    22	/* flush not queueuable */
#define QUEUE_FLAG_DAX         23	/* device supports DAX */
#define QUEUE_FLAG_STATS       24	/* track rq completion times */
#define QUEUE_FLAG_POLL_STATS  25	/* collecting stats for hybrid polling */
#define QUEUE_FLAG_REGISTERED  26	/* queue has been registered to a disk */
#define QUEUE_FLAG_SCSI_PASSTHROUGH 27	/* queue supports SCSI commands */
#define QUEUE_FLAG_QUIESCED    28	/* queue has been quiesced */
#define QUEUE_FLAG_PREEMPT_ONLY	29	/* only process REQ_PREEMPT requests */

#define QUEUE_FLAG_DEFAULT	((1 << QUEUE_FLAG_IO_STAT) |		\
				 (1 << QUEUE_FLAG_SAME_COMP)	|	\
				 (1 << QUEUE_FLAG_ADD_RANDOM))

#define QUEUE_FLAG_MQ_DEFAULT	((1 << QUEUE_FLAG_IO_STAT) |		\
				 (1 << QUEUE_FLAG_SAME_COMP)	|	\
				 (1 << QUEUE_FLAG_POLL))

/*
 * @q->queue_lock is set while a queue is being initialized. Since we know
 * that no other threads access the queue object before @q->queue_lock has
 * been set, it is safe to manipulate queue flags without holding the
 * queue_lock if @q->queue_lock == NULL. See also blk_alloc_queue_node() and
 * blk_init_allocated_queue().
 */
static inline void queue_lockdep_assert_held(struct request_queue *q)
{
	if (q->queue_lock)
		lockdep_assert_held(q->queue_lock);
}

static inline void queue_flag_set_unlocked(unsigned int flag,
					   struct request_queue *q)
{
	__set_bit(flag, &q->queue_flags);
}

static inline int queue_flag_test_and_clear(unsigned int flag,
					    struct request_queue *q)
{
	queue_lockdep_assert_held(q);

if (test_bit(flag, &q->queue_flags)) {
		__clear_bit(flag, &q->queue_flags);
		return 1;
	}

return 0;
}

static inline int queue_flag_test_and_set(unsigned int flag,
					  struct request_queue *q)
{
	queue_lockdep_assert_held(q);

if (!test_bit(flag, &q->queue_flags)) {
		__set_bit(flag, &q->queue_flags);
		return 0;
	}

return 1;
}

static inline void queue_flag_set(unsigned int flag, struct request_queue *q)
{
	queue_lockdep_assert_held(q);
	__set_bit(flag, &q->queue_flags);
}

static inline void queue_flag_clear_unlocked(unsigned int flag,
					     struct request_queue *q)
{
	__clear_bit(flag, &q->queue_flags);
}

static inline int queue_in_flight(struct request_queue *q)
{
	return q->in_flight[0] + q->in_flight[1];
}

static inline void queue_flag_clear(unsigned int flag, struct request_queue *q)
{
	queue_lockdep_assert_held(q);
	__clear_bit(flag, &q->queue_flags);
}

#define blk_queue_tagged(q)	test_bit(QUEUE_FLAG_QUEUED, &(q)->queue_flags)
#define blk_queue_stopped(q)	test_bit(QUEUE_FLAG_STOPPED, &(q)->queue_flags)
#define blk_queue_dying(q)	test_bit(QUEUE_FLAG_DYING, &(q)->queue_flags)
#define blk_queue_dead(q)	test_bit(QUEUE_FLAG_DEAD, &(q)->queue_flags)
#define blk_queue_bypass(q)	test_bit(QUEUE_FLAG_BYPASS, &(q)->queue_flags)
#define blk_queue_init_done(q)	test_bit(QUEUE_FLAG_INIT_DONE, &(q)->queue_flags)
#define blk_queue_nomerges(q)	test_bit(QUEUE_FLAG_NOMERGES, &(q)->queue_flags)
#define blk_queue_noxmerges(q)	\
	test_bit(QUEUE_FLAG_NOXMERGES, &(q)->queue_flags)
#define blk_queue_nonrot(q)	test_bit(QUEUE_FLAG_NONROT, &(q)->queue_flags)
#define blk_queue_io_stat(q)	test_bit(QUEUE_FLAG_IO_STAT, &(q)->queue_flags)
#define blk_queue_add_random(q)	test_bit(QUEUE_FLAG_ADD_RANDOM, &(q)->queue_flags)
#define blk_queue_discard(q)	test_bit(QUEUE_FLAG_DISCARD, &(q)->queue_flags)
#define blk_queue_secure_erase(q) \
	(test_bit(QUEUE_FLAG_SECERASE, &(q)->queue_flags))
#define blk_queue_dax(q)	test_bit(QUEUE_FLAG_DAX, &(q)->queue_flags)
#define blk_queue_scsi_passthrough(q)	\
	test_bit(QUEUE_FLAG_SCSI_PASSTHROUGH, &(q)->queue_flags)

#define blk_noretry_request(rq) \
	((rq)->cmd_flags & (REQ_FAILFAST_DEV|REQ_FAILFAST_TRANSPORT| \
			     REQ_FAILFAST_DRIVER))
#define blk_queue_quiesced(q)	test_bit(QUEUE_FLAG_QUIESCED, &(q)->queue_flags)
#define blk_queue_preempt_only(q)				\
	test_bit(QUEUE_FLAG_PREEMPT_ONLY, &(q)->queue_flags)
#define blk_queue_fua(q)	test_bit(QUEUE_FLAG_FUA, &(q)->queue_flags)

extern int blk_set_preempt_only(struct request_queue *q);
extern void blk_clear_preempt_only(struct request_queue *q);

static inline bool blk_account_rq(struct request *rq)
{
	return (rq->rq_flags & RQF_STARTED) && !blk_rq_is_passthrough(rq);
}

#define blk_rq_cpu_valid(rq)	((rq)->cpu != -1)
#define blk_bidi_rq(rq)		((rq)->next_rq != NULL)
/* rq->queuelist of dequeued request must be list_empty() */
#define blk_queued_rq(rq)	(!list_empty(&(rq)->queuelist))

#define list_entry_rq(ptr)	list_entry((ptr), struct request, queuelist)

#define rq_data_dir(rq)		(op_is_write(req_op(rq)) ? WRITE : READ)

/*
 * Driver can handle struct request, if it either has an old style
 * request_fn defined, or is blk-mq based.
 */
static inline bool queue_is_rq_based(struct request_queue *q)
{
	return q->request_fn || q->mq_ops;
}

static inline unsigned int blk_queue_cluster(struct request_queue *q)
{
	return q->limits.cluster;
}

static inline enum blk_zoned_model
blk_queue_zoned_model(struct request_queue *q)
{
	return q->limits.zoned;
}

static inline bool blk_queue_is_zoned(struct request_queue *q)
{
	switch (blk_queue_zoned_model(q)) {
	case BLK_ZONED_HA:
	case BLK_ZONED_HM:
		return true;
	default:
		return false;
	}
}

static inline unsigned int blk_queue_zone_sectors(struct request_queue *q)
{
	return blk_queue_is_zoned(q) ? q->limits.chunk_sectors : 0;
}

static inline bool rq_is_sync(struct request *rq)
{
	return op_is_sync(rq->cmd_flags);
}

static inline bool blk_rl_full(struct request_list *rl, bool sync)
{
	unsigned int flag = sync ? BLK_RL_SYNCFULL : BLK_RL_ASYNCFULL;

return rl->flags & flag;
}

static inline void blk_set_rl_full(struct request_list *rl, bool sync)
{
	unsigned int flag = sync ? BLK_RL_SYNCFULL : BLK_RL_ASYNCFULL;

rl->flags |= flag;
}

static inline void blk_clear_rl_full(struct request_list *rl, bool sync)
{
	unsigned int flag = sync ? BLK_RL_SYNCFULL : BLK_RL_ASYNCFULL;

rl->flags &= ~flag;
}

static inline bool rq_mergeable(struct request *rq)
{
	if (blk_rq_is_passthrough(rq))
		return false;

if (req_op(rq) == REQ_OP_FLUSH)
		return false;

if (req_op(rq) == REQ_OP_WRITE_ZEROES)
		return false;

if (rq->cmd_flags & REQ_NOMERGE_FLAGS)
		return false;
	if (rq->rq_flags & RQF_NOMERGE_FLAGS)
		return false;

return true;
}

static inline bool blk_write_same_mergeable(struct bio *a, struct bio *b)
{
	if (bio_page(a) == bio_page(b) &&
	    bio_offset(a) == bio_offset(b))
		return true;

return false;
}

static inline unsigned int blk_queue_depth(struct request_queue *q)
{
	if (q->queue_depth)
		return q->queue_depth;

return q->nr_requests;
}

/*
 * q->prep_rq_fn return values
 */
enum {
	BLKPREP_OK,		/* serve it */
	BLKPREP_KILL,		/* fatal error, kill, return -EIO */
	BLKPREP_DEFER,		/* leave on queue */
	BLKPREP_INVALID,	/* invalid command, kill, return -EREMOTEIO */
};

extern unsigned long blk_max_low_pfn, blk_max_pfn;

/*
 * standard bounce addresses:
 *
 * BLK_BOUNCE_HIGH	: bounce all highmem pages
 * BLK_BOUNCE_ANY	: don't bounce anything
 * BLK_BOUNCE_ISA	: bounce pages above ISA DMA boundary
 */

#if BITS_PER_LONG == 32
#define BLK_BOUNCE_HIGH		((u64)blk_max_low_pfn << PAGE_SHIFT)
#else
#define BLK_BOUNCE_HIGH		-1ULL
#endif
#define BLK_BOUNCE_ANY		(-1ULL)
#define BLK_BOUNCE_ISA		(DMA_BIT_MASK(24))

/*
 * default timeout for SG_IO if none specified
 */
#define BLK_DEFAULT_SG_TIMEOUT	(60 * HZ)
#define BLK_MIN_SG_TIMEOUT	(7 * HZ)

struct rq_map_data {
	struct page **pages;
	int page_order;
	int nr_entries;
	unsigned long offset;
	int null_mapped;
	int from_user;
};

struct req_iterator {
	struct bvec_iter iter;
	struct bio *bio;
};

/* This should not be used directly - use rq_for_each_segment */
#define for_each_bio(_bio)		\
	for (; _bio; _bio = _bio->bi_next)
#define __rq_for_each_bio(_bio, rq)	\
	if ((rq->bio))			\
		for (_bio = (rq)->bio; _bio; _bio = _bio->bi_next)

#define rq_for_each_segment(bvl, _rq, _iter)			\
	__rq_for_each_bio(_iter.bio, _rq)			\
		bio_for_each_segment(bvl, _iter.bio, _iter.iter)

#define rq_iter_last(bvec, _iter)				\
		(_iter.bio->bi_next == NULL &&			\
		 bio_iter_last(bvec, _iter.iter))

#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
# error	"You should define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE for your platform"
#endif
#if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
extern void rq_flush_dcache_pages(struct request *rq);
#else
static inline void rq_flush_dcache_pages(struct request *rq)
{
}
#endif

extern int blk_register_queue(struct gendisk *disk);
extern void blk_unregister_queue(struct gendisk *disk);
extern blk_qc_t generic_make_request(struct bio *bio);
extern blk_qc_t direct_make_request(struct bio *bio);
extern void blk_rq_init(struct request_queue *q, struct request *rq);
extern void blk_init_request_from_bio(struct request *req, struct bio *bio);
extern void blk_put_request(struct request *);
extern void __blk_put_request(struct request_queue *, struct request *);
extern struct request *blk_get_request_flags(struct request_queue *,
					     unsigned int op,
					     blk_mq_req_flags_t flags);
extern struct request *blk_get_request(struct request_queue *, unsigned int op,
				       gfp_t gfp_mask);
extern void blk_requeue_request(struct request_queue *, struct request *);
extern int blk_lld_busy(struct request_queue *q);
extern int blk_rq_prep_clone(struct request *rq, struct request *rq_src,
			     struct bio_set *bs, gfp_t gfp_mask,
			     int (*bio_ctr)(struct bio *, struct bio *, void *),
			     void *data);
extern void blk_rq_unprep_clone(struct request *rq);
extern blk_status_t blk_insert_cloned_request(struct request_queue *q,
				     struct request *rq);
extern int blk_rq_append_bio(struct request *rq, struct bio **bio);
extern void blk_delay_queue(struct request_queue *, unsigned long);
extern void blk_queue_split(struct request_queue *, struct bio **);
extern void blk_recount_segments(struct request_queue *, struct bio *);
extern int scsi_verify_blk_ioctl(struct block_device *, unsigned int);
extern int scsi_cmd_blk_ioctl(struct block_device *, fmode_t,
			      unsigned int, void __user *);
extern int scsi_cmd_ioctl(struct request_queue *, struct gendisk *, fmode_t,
			  unsigned int, void __user *);
extern int sg_scsi_ioctl(struct request_queue *, struct gendisk *, fmode_t,
			 struct scsi_ioctl_command __user *);

extern int blk_queue_enter(struct request_queue *q, blk_mq_req_flags_t flags);
extern void blk_queue_exit(struct request_queue *q);
extern void blk_start_queue(struct request_queue *q);
extern void blk_start_queue_async(struct request_queue *q);
extern void blk_stop_queue(struct request_queue *q);
extern void blk_sync_queue(struct request_queue *q);
extern void __blk_stop_queue(struct request_queue *q);
extern void __blk_run_queue(struct request_queue *q);
extern void __blk_run_queue_uncond(struct request_queue *q);
extern void blk_run_queue(struct request_queue *);
extern void blk_run_queue_async(struct request_queue *q);
extern int blk_rq_map_user(struct request_queue *, struct request *,
			   struct rq_map_data *, void __user *, unsigned long,
			   gfp_t);
extern int blk_rq_unmap_user(struct bio *);
extern int blk_rq_map_kern(struct request_queue *, struct request *, void *, unsigned int, gfp_t);
extern int blk_rq_map_user_iov(struct request_queue *, struct request *,
			       struct rq_map_data *, const struct iov_iter *,
			       gfp_t);
extern void blk_execute_rq(struct request_queue *, struct gendisk *,
			  struct request *, int);
extern void blk_execute_rq_nowait(struct request_queue *, struct gendisk *,
				  struct request *, int, rq_end_io_fn *);

int blk_status_to_errno(blk_status_t status);
blk_status_t errno_to_blk_status(int errno);

bool blk_poll(struct request_queue *q, blk_qc_t cookie);

static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
{
	return bdev->bd_disk->queue;	/* this is never NULL */
}

/*
 * The basic unit of block I/O is a sector. It is used in a number of contexts
 * in Linux (blk, bio, genhd). The size of one sector is 512 = 2**9
 * bytes. Variables of type sector_t represent an offset or size that is a
 * multiple of 512 bytes. Hence these two constants.
 */
#ifndef SECTOR_SHIFT
#define SECTOR_SHIFT 9
#endif
#ifndef SECTOR_SIZE
#define SECTOR_SIZE (1 << SECTOR_SHIFT)
#endif

/*
 * blk_rq_pos()			: the current sector
 * blk_rq_bytes()		: bytes left in the entire request
 * blk_rq_cur_bytes()		: bytes left in the current segment
 * blk_rq_err_bytes()		: bytes left till the next error boundary
 * blk_rq_sectors()		: sectors left in the entire request
 * blk_rq_cur_sectors()		: sectors left in the current segment
 */
static inline sector_t blk_rq_pos(const struct request *rq)
{
	return rq->__sector;
}

static inline unsigned int blk_rq_bytes(const struct request *rq)
{
	return rq->__data_len;
}

static inline int blk_rq_cur_bytes(const struct request *rq)
{
	return rq->bio ? bio_cur_bytes(rq->bio) : 0;
}

extern unsigned int blk_rq_err_bytes(const struct request *rq);

static inline unsigned int blk_rq_sectors(const struct request *rq)
{
	return blk_rq_bytes(rq) >> SECTOR_SHIFT;
}

static inline unsigned int blk_rq_cur_sectors(const struct request *rq)
{
	return blk_rq_cur_bytes(rq) >> SECTOR_SHIFT;
}

/*
 * Some commands like WRITE SAME have a payload or data transfer size which
 * is different from the size of the request.  Any driver that supports such
 * commands using the RQF_SPECIAL_PAYLOAD flag needs to use this helper to
 * calculate the data transfer size.
 */
static inline unsigned int blk_rq_payload_bytes(struct request *rq)
{
	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
		return rq->special_vec.bv_len;
	return blk_rq_bytes(rq);
}

static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q,
						     int op)
{
	if (unlikely(op == REQ_OP_DISCARD || op == REQ_OP_SECURE_ERASE))
		return min(q->limits.max_discard_sectors,
			   UINT_MAX >> SECTOR_SHIFT);

if (unlikely(op == REQ_OP_WRITE_SAME))
		return q->limits.max_write_same_sectors;

if (unlikely(op == REQ_OP_WRITE_ZEROES))
		return q->limits.max_write_zeroes_sectors;

return q->limits.max_sectors;
}

/*
 * Return maximum size of a request at given offset. Only valid for
 * file system requests.
 */
static inline unsigned int blk_max_size_offset(struct request_queue *q,
					       sector_t offset)
{
	if (!q->limits.chunk_sectors)
		return q->limits.max_sectors;

return min(q->limits.max_sectors, (unsigned int)(q->limits.chunk_sectors -
			(offset & (q->limits.chunk_sectors - 1))));
}

static inline unsigned int blk_rq_get_max_sectors(struct request *rq,
						  sector_t offset)
{
	struct request_queue *q = rq->q;

if (blk_rq_is_passthrough(rq))
		return q->limits.max_hw_sectors;

if (!q->limits.chunk_sectors ||
	    req_op(rq) == REQ_OP_DISCARD ||
	    req_op(rq) == REQ_OP_SECURE_ERASE)
		return blk_queue_get_max_sectors(q, req_op(rq));

return min(blk_max_size_offset(q, offset),
			blk_queue_get_max_sectors(q, req_op(rq)));
}

static inline unsigned int blk_rq_count_bios(struct request *rq)
{
	unsigned int nr_bios = 0;
	struct bio *bio;

__rq_for_each_bio(bio, rq)
		nr_bios++;

return nr_bios;
}

/*
 * Request issue related functions.
 */
extern struct request *blk_peek_request(struct request_queue *q);
extern void blk_start_request(struct request *rq);
extern struct request *blk_fetch_request(struct request_queue *q);

void blk_steal_bios(struct bio_list *list, struct request *rq);

/*
 * Request completion related functions.
 *
 * blk_update_request() completes given number of bytes and updates
 * the request without completing it.
 *
 * blk_end_request() and friends.  __blk_end_request() must be called
 * with the request queue spinlock acquired.
 *
 * Several drivers define their own end_request and call
 * blk_end_request() for parts of the original function.
 * This prevents code duplication in drivers.
 */
extern bool blk_update_request(struct request *rq, blk_status_t error,
			       unsigned int nr_bytes);
extern void blk_finish_request(struct request *rq, blk_status_t error);
extern bool blk_end_request(struct request *rq, blk_status_t error,
			    unsigned int nr_bytes);
extern void blk_end_request_all(struct request *rq, blk_status_t error);
extern bool __blk_end_request(struct request *rq, blk_status_t error,
			      unsigned int nr_bytes);
extern void __blk_end_request_all(struct request *rq, blk_status_t error);
extern bool __blk_end_request_cur(struct request *rq, blk_status_t error);

extern void blk_complete_request(struct request *);
extern void __blk_complete_request(struct request *);
extern void blk_abort_request(struct request *);
extern void blk_unprep_request(struct request *);

/*
 * Access functions for manipulating queue properties
 */
extern struct request_queue *blk_init_queue_node(request_fn_proc *rfn,
					spinlock_t *lock, int node_id);
extern struct request_queue *blk_init_queue(request_fn_proc *, spinlock_t *);
extern int blk_init_allocated_queue(struct request_queue *);
extern void blk_cleanup_queue(struct request_queue *);
extern void blk_queue_make_request(struct request_queue *, make_request_fn *);
extern void blk_queue_bounce_limit(struct request_queue *, u64);
extern void blk_queue_max_hw_sectors(struct request_queue *, unsigned int);
extern void blk_queue_chunk_sectors(struct request_queue *, unsigned int);
extern void blk_queue_max_segments(struct request_queue *, unsigned short);
extern void blk_queue_max_discard_segments(struct request_queue *,
		unsigned short);
extern void blk_queue_max_segment_size(struct request_queue *, unsigned int);
extern void blk_queue_max_discard_sectors(struct request_queue *q,
		unsigned int max_discard_sectors);
extern void blk_queue_max_write_same_sectors(struct request_queue *q,
		unsigned int max_write_same_sectors);
extern void blk_queue_max_write_zeroes_sectors(struct request_queue *q,
		unsigned int max_write_same_sectors);
extern void blk_queue_logical_block_size(struct request_queue *, unsigned int);
extern void blk_queue_physical_block_size(struct request_queue *, unsigned int);
extern void blk_queue_alignment_offset(struct request_queue *q,
				       unsigned int alignment);
extern void blk_limits_io_min(struct queue_limits *limits, unsigned int min);
extern void blk_queue_io_min(struct request_queue *q, unsigned int min);
extern void blk_limits_io_opt(struct queue_limits *limits, unsigned int opt);
extern void blk_queue_io_opt(struct request_queue *q, unsigned int opt);
extern void blk_set_queue_depth(struct request_queue *q, unsigned int depth);
extern void blk_set_default_limits(struct queue_limits *lim);
extern void blk_set_stacking_limits(struct queue_limits *lim);
extern int blk_stack_limits(struct queue_limits *t, struct queue_limits *b,
			    sector_t offset);
extern int bdev_stack_limits(struct queue_limits *t, struct block_device *bdev,
			    sector_t offset);
extern void disk_stack_limits(struct gendisk *disk, struct block_device *bdev,
			      sector_t offset);
extern void blk_queue_stack_limits(struct request_queue *t, struct request_queue *b);
extern void blk_queue_dma_pad(struct request_queue *, unsigned int);
extern void blk_queue_update_dma_pad(struct request_queue *, unsigned int);
extern int blk_queue_dma_drain(struct request_queue *q,
			       dma_drain_needed_fn *dma_drain_needed,
			       void *buf, unsigned int size);
extern void blk_queue_lld_busy(struct request_queue *q, lld_busy_fn *fn);
extern void blk_queue_segment_boundary(struct request_queue *, unsigned long);
extern void blk_queue_virt_boundary(struct request_queue *, unsigned long);
extern void blk_queue_prep_rq(struct request_queue *, prep_rq_fn *pfn);
extern void blk_queue_unprep_rq(struct request_queue *, unprep_rq_fn *ufn);
extern void blk_queue_dma_alignment(struct request_queue *, int);
extern void blk_queue_update_dma_alignment(struct request_queue *, int);
extern void blk_queue_softirq_done(struct request_queue *, softirq_done_fn *);
extern void blk_queue_rq_timed_out(struct request_queue *, rq_timed_out_fn *);
extern void blk_queue_rq_timeout(struct request_queue *, unsigned int);
extern void blk_queue_flush_queueable(struct request_queue *q, bool queueable);
extern void blk_queue_write_cache(struct request_queue *q, bool enabled, bool fua);

/*
 * Number of physical segments as sent to the device.
 *
 * Normally this is the number of discontiguous data segments sent by the
 * submitter.  But for data-less command like discard we might have no
 * actual data segments submitted, but the driver might have to add it's
 * own special payload.  In that case we still return 1 here so that this
 * special payload will be mapped.
 */
static inline unsigned short blk_rq_nr_phys_segments(struct request *rq)
{
	if (rq->rq_flags & RQF_SPECIAL_PAYLOAD)
		return 1;
	return rq->nr_phys_segments;
}

/*
 * Number of discard segments (or ranges) the driver needs to fill in.
 * Each discard bio merged into a request is counted as one segment.
 */
static inline unsigned short blk_rq_nr_discard_segments(struct request *rq)
{
	return max_t(unsigned short, rq->nr_phys_segments, 1);
}

extern int blk_rq_map_sg(struct request_queue *, struct request *, struct scatterlist *);
extern void blk_dump_rq_flags(struct request *, char *);
extern long nr_blockdev_pages(void);

bool __must_check blk_get_queue(struct request_queue *);
struct request_queue *blk_alloc_queue(gfp_t);
struct request_queue *blk_alloc_queue_node(gfp_t, int);
extern void blk_put_queue(struct request_queue *);
extern void blk_set_queue_dying(struct request_queue *);

/*
 * block layer runtime pm functions
 */
#ifdef CONFIG_PM
extern void blk_pm_runtime_init(struct request_queue *q, struct device *dev);
extern int blk_pre_runtime_suspend(struct request_queue *q);
extern void blk_post_runtime_suspend(struct request_queue *q, int err);
extern void blk_pre_runtime_resume(struct request_queue *q);
extern void blk_post_runtime_resume(struct request_queue *q, int err);
extern void blk_set_runtime_active(struct request_queue *q);
#else
static inline void blk_pm_runtime_init(struct request_queue *q,
	struct device *dev) {}
static inline int blk_pre_runtime_suspend(struct request_queue *q)
{
	return -ENOSYS;
}
static inline void blk_post_runtime_suspend(struct request_queue *q, int err) {}
static inline void blk_pre_runtime_resume(struct request_queue *q) {}
static inline void blk_post_runtime_resume(struct request_queue *q, int err) {}
static inline void blk_set_runtime_active(struct request_queue *q) {}
#endif

/*
 * blk_plug permits building a queue of related requests by holding the I/O
 * fragments for a short period. This allows merging of sequential requests
 * into single larger request. As the requests are moved from a per-task list to
 * the device's request_queue in a batch, this results in improved scalability
 * as the lock contention for request_queue lock is reduced.
 *
 * It is ok not to disable preemption when adding the request to the plug list
 * or when attempting a merge, because blk_schedule_flush_list() will only flush
 * the plug list when the task sleeps by itself. For details, please see
 * schedule() where blk_schedule_flush_plug() is called.
 */
struct blk_plug {
	struct list_head list; /* requests */
	struct list_head mq_list; /* blk-mq requests */
	struct list_head cb_list; /* md requires an unplug callback */
};
#define BLK_MAX_REQUEST_COUNT 16
#define BLK_PLUG_FLUSH_SIZE (128 * 1024)

struct blk_plug_cb;
typedef void (*blk_plug_cb_fn)(struct blk_plug_cb *, bool);
struct blk_plug_cb {
	struct list_head list;
	blk_plug_cb_fn callback;
	void *data;
};
extern struct blk_plug_cb *blk_check_plugged(blk_plug_cb_fn unplug,
					     void *data, int size);
extern void blk_start_plug(struct blk_plug *);
extern void blk_finish_plug(struct blk_plug *);
extern void blk_flush_plug_list(struct blk_plug *, bool);

static inline void blk_flush_plug(struct task_struct *tsk)
{
	struct blk_plug *plug = tsk->plug;

if (plug)
		blk_flush_plug_list(plug, false);
}

static inline void blk_schedule_flush_plug(struct task_struct *tsk)
{
	struct blk_plug *plug = tsk->plug;

if (plug)
		blk_flush_plug_list(plug, true);
}

static inline bool blk_needs_flush_plug(struct task_struct *tsk)
{
	struct blk_plug *plug = tsk->plug;

return plug &&
		(!list_empty(&plug->list) ||
		 !list_empty(&plug->mq_list) ||
		 !list_empty(&plug->cb_list));
}

/*
 * tag stuff
 */
extern int blk_queue_start_tag(struct request_queue *, struct request *);
extern struct request *blk_queue_find_tag(struct request_queue *, int);
extern void blk_queue_end_tag(struct request_queue *, struct request *);
extern int blk_queue_init_tags(struct request_queue *, int, struct blk_queue_tag *, int);
extern void blk_queue_free_tags(struct request_queue *);
extern int blk_queue_resize_tags(struct request_queue *, int);
extern void blk_queue_invalidate_tags(struct request_queue *);
extern struct blk_queue_tag *blk_init_tags(int, int);
extern void blk_free_tags(struct blk_queue_tag *);

static inline struct request *blk_map_queue_find_tag(struct blk_queue_tag *bqt,
						int tag)
{
	if (unlikely(bqt == NULL || tag >= bqt->real_max_depth))
		return NULL;
	return bqt->tag_index[tag];
}

extern int blkdev_issue_flush(struct block_device *, gfp_t, sector_t *);
extern int blkdev_issue_write_same(struct block_device *bdev, sector_t sector,
		sector_t nr_sects, gfp_t gfp_mask, struct page *page);

#define BLKDEV_DISCARD_SECURE	(1 << 0)	/* issue a secure erase */

extern int blkdev_issue_discard(struct block_device *bdev, sector_t sector,
		sector_t nr_sects, gfp_t gfp_mask, unsigned long flags);
extern int __blkdev_issue_discard(struct block_device *bdev, sector_t sector,
		sector_t nr_sects, gfp_t gfp_mask, int flags,
		struct bio **biop);

#define BLKDEV_ZERO_NOUNMAP	(1 << 0)  /* do not free blocks */
#define BLKDEV_ZERO_NOFALLBACK	(1 << 1)  /* don't write explicit zeroes */

extern int __blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
		sector_t nr_sects, gfp_t gfp_mask, struct bio **biop,
		unsigned flags);
extern int blkdev_issue_zeroout(struct block_device *bdev, sector_t sector,
		sector_t nr_sects, gfp_t gfp_mask, unsigned flags);

static inline int sb_issue_discard(struct super_block *sb, sector_t block,
		sector_t nr_blocks, gfp_t gfp_mask, unsigned long flags)
{
	return blkdev_issue_discard(sb->s_bdev,
				    block << (sb->s_blocksize_bits -
					      SECTOR_SHIFT),
				    nr_blocks << (sb->s_blocksize_bits -
						  SECTOR_SHIFT),
				    gfp_mask, flags);
}
static inline int sb_issue_zeroout(struct super_block *sb, sector_t block,
		sector_t nr_blocks, gfp_t gfp_mask)
{
	return blkdev_issue_zeroout(sb->s_bdev,
				    block << (sb->s_blocksize_bits -
					      SECTOR_SHIFT),
				    nr_blocks << (sb->s_blocksize_bits -
						  SECTOR_SHIFT),
				    gfp_mask, 0);
}

extern int blk_verify_command(unsigned char *cmd, fmode_t mode);

enum blk_default_limits {
	BLK_MAX_SEGMENTS	= 128,
	BLK_SAFE_MAX_SECTORS	= 255,
	BLK_DEF_MAX_SECTORS	= 2560,
	BLK_MAX_SEGMENT_SIZE	= 65536,
	BLK_SEG_BOUNDARY_MASK	= 0xFFFFFFFFUL,
};

#define blkdev_entry_to_request(entry) list_entry((entry), struct request, queuelist)

static inline unsigned long queue_segment_boundary(struct request_queue *q)
{
	return q->limits.seg_boundary_mask;
}

static inline unsigned long queue_virt_boundary(struct request_queue *q)
{
	return q->limits.virt_boundary_mask;
}

static inline unsigned int queue_max_sectors(struct request_queue *q)
{
	return q->limits.max_sectors;
}

static inline unsigned int queue_max_hw_sectors(struct request_queue *q)
{
	return q->limits.max_hw_sectors;
}

static inline unsigned short queue_max_segments(struct request_queue *q)
{
	return q->limits.max_segments;
}

static inline unsigned short queue_max_discard_segments(struct request_queue *q)
{
	return q->limits.max_discard_segments;
}

static inline unsigned int queue_max_segment_size(struct request_queue *q)
{
	return q->limits.max_segment_size;
}

static inline unsigned queue_logical_block_size(struct request_queue *q)
{
	int retval = 512;

if (q && q->limits.logical_block_size)
		retval = q->limits.logical_block_size;

return retval;
}

static inline unsigned int bdev_logical_block_size(struct block_device *bdev)
{
	return queue_logical_block_size(bdev_get_queue(bdev));
}

static inline unsigned int queue_physical_block_size(struct request_queue *q)
{
	return q->limits.physical_block_size;
}

static inline unsigned int bdev_physical_block_size(struct block_device *bdev)
{
	return queue_physical_block_size(bdev_get_queue(bdev));
}

static inline unsigned int queue_io_min(struct request_queue *q)
{
	return q->limits.io_min;
}

static inline int bdev_io_min(struct block_device *bdev)
{
	return queue_io_min(bdev_get_queue(bdev));
}

static inline unsigned int queue_io_opt(struct request_queue *q)
{
	return q->limits.io_opt;
}

static inline int bdev_io_opt(struct block_device *bdev)
{
	return queue_io_opt(bdev_get_queue(bdev));
}

static inline int queue_alignment_offset(struct request_queue *q)
{
	if (q->limits.misaligned)
		return -1;

return q->limits.alignment_offset;
}

static inline int queue_limit_alignment_offset(struct queue_limits *lim, sector_t sector)
{
	unsigned int granularity = max(lim->physical_block_size, lim->io_min);
	unsigned int alignment = sector_div(sector, granularity >> SECTOR_SHIFT)
		<< SECTOR_SHIFT;

return (granularity + lim->alignment_offset - alignment) % granularity;
}

static inline int bdev_alignment_offset(struct block_device *bdev)
{
	struct request_queue *q = bdev_get_queue(bdev);

if (q->limits.misaligned)
		return -1;

if (bdev != bdev->bd_contains)
		return bdev->bd_part->alignment_offset;

return q->limits.alignment_offset;
}

static inline int queue_discard_alignment(struct request_queue *q)
{
	if (q->limits.discard_misaligned)
		return -1;

return q->limits.discard_alignment;
}

static inline int queue_limit_discard_alignment(struct queue_limits *lim, sector_t sector)
{
	unsigned int alignment, granularity, offset;

if (!lim->max_discard_sectors)
		return 0;

/* Why are these in bytes, not sectors? */
	alignment = lim->discard_alignment >> SECTOR_SHIFT;
	granularity = lim->discard_granularity >> SECTOR_SHIFT;
	if (!granularity)
		return 0;

/* Offset of the partition start in 'granularity' sectors */
	offset = sector_div(sector, granularity);

/* And why do we do this modulus *again* in blkdev_issue_discard()? */
	offset = (granularity + alignment - offset) % granularity;

/* Turn it back into bytes, gaah */
	return offset << SECTOR_SHIFT;
}

static inline int bdev_discard_alignment(struct block_device *bdev)
{
	struct request_queue *q = bdev_get_queue(bdev);

if (bdev != bdev->bd_contains)
		return bdev->bd_part->discard_alignment;

return q->limits.discard_alignment;
}

static inline unsigned int bdev_write_same(struct block_device *bdev)
{
	struct request_queue *q = bdev_get_queue(bdev);

if (q)
		return q->limits.max_write_same_sectors;

return 0;
}

static inline unsigned int bdev_write_zeroes_sectors(struct block_device *bdev)
{
	struct request_queue *q = bdev_get_queue(bdev);

if (q)
		return q->limits.max_write_zeroes_sectors;

return 0;
}

static inline enum blk_zoned_model bdev_zoned_model(struct block_device *bdev)
{
	struct request_queue *q = bdev_get_queue(bdev);

if (q)
		return blk_queue_zoned_model(q);

return BLK_ZONED_NONE;
}

static inline bool bdev_is_zoned(struct block_device *bdev)
{
	struct request_queue *q = bdev_get_queue(bdev);

if (q)
		return blk_queue_is_zoned(q);

return false;
}

static inline unsigned int bdev_zone_sectors(struct block_device *bdev)
{
	struct request_queue *q = bdev_get_queue(bdev);

if (q)
		return blk_queue_zone_sectors(q);

return 0;
}

static inline int queue_dma_alignment(struct request_queue *q)
{
	return q ? q->dma_alignment : 511;
}

static inline int blk_rq_aligned(struct request_queue *q, unsigned long addr,
				 unsigned int len)
{
	unsigned int alignment = queue_dma_alignment(q) | q->dma_pad_mask;
	return !(addr & alignment) && !(len & alignment);
}

/* assumes size > 256 */
static inline unsigned int blksize_bits(unsigned int size)
{
	unsigned int bits = 8;
	do {
		bits++;
		size >>= 1;
	} while (size > 256);
	return bits;
}

static inline unsigned int block_size(struct block_device *bdev)
{
	return bdev->bd_block_size;
}

static inline bool queue_flush_queueable(struct request_queue *q)
{
	return !test_bit(QUEUE_FLAG_FLUSH_NQ, &q->queue_flags);
}

typedef struct {struct page *v;} Sector;

unsigned char *read_dev_sector(struct block_device *, sector_t, Sector *);

static inline void put_dev_sector(Sector p)
{
	put_page(p.v);
}

static inline bool __bvec_gap_to_prev(struct request_queue *q,
				struct bio_vec *bprv, unsigned int offset)
{
	return offset ||
		((bprv->bv_offset + bprv->bv_len) & queue_virt_boundary(q));
}

/*
 * Check if adding a bio_vec after bprv with offset would create a gap in
 * the SG list. Most drivers don't care about this, but some do.
 */
static inline bool bvec_gap_to_prev(struct request_queue *q,
				struct bio_vec *bprv, unsigned int offset)
{
	if (!queue_virt_boundary(q))
		return false;
	return __bvec_gap_to_prev(q, bprv, offset);
}

/*
 * Check if the two bvecs from two bios can be merged to one segment.
 * If yes, no need to check gap between the two bios since the 1st bio
 * and the 1st bvec in the 2nd bio can be handled in one segment.
 */
static inline bool bios_segs_mergeable(struct request_queue *q,
		struct bio *prev, struct bio_vec *prev_last_bv,
		struct bio_vec *next_first_bv)
{
	if (!BIOVEC_PHYS_MERGEABLE(prev_last_bv, next_first_bv))
		return false;
	if (!BIOVEC_SEG_BOUNDARY(q, prev_last_bv, next_first_bv))
		return false;
	if (prev->bi_seg_back_size + next_first_bv->bv_len >
			queue_max_segment_size(q))
		return false;
	return true;
}

static inline bool bio_will_gap(struct request_queue *q,
				struct request *prev_rq,
				struct bio *prev,
				struct bio *next)
{
	if (bio_has_data(prev) && queue_virt_boundary(q)) {
		struct bio_vec pb, nb;

/*
		 * don't merge if the 1st bio starts with non-zero
		 * offset, otherwise it is quite difficult to respect
		 * sg gap limit. We work hard to merge a huge number of small
		 * single bios in case of mkfs.
		 */
		if (prev_rq)
			bio_get_first_bvec(prev_rq->bio, &pb);
		else
			bio_get_first_bvec(prev, &pb);
		if (pb.bv_offset)
			return true;

/*
		 * We don't need to worry about the situation that the
		 * merged segment ends in unaligned virt boundary:
		 *
		 * - if 'pb' ends aligned, the merged segment ends aligned
		 * - if 'pb' ends unaligned, the next bio must include
		 *   one single bvec of 'nb', otherwise the 'nb' can't
		 *   merge with 'pb'
		 */
		bio_get_last_bvec(prev, &pb);
		bio_get_first_bvec(next, &nb);

if (!bios_segs_mergeable(q, prev, &pb, &nb))
			return __bvec_gap_to_prev(q, &pb, nb.bv_offset);
	}

return false;
}

static inline bool req_gap_back_merge(struct request *req, struct bio *bio)
{
	return bio_will_gap(req->q, req, req->biotail, bio);
}

static inline bool req_gap_front_merge(struct request *req, struct bio *bio)
{
	return bio_will_gap(req->q, NULL, bio, req->bio);
}

int kblockd_schedule_work(struct work_struct *work);
int kblockd_schedule_work_on(int cpu, struct work_struct *work);
int kblockd_schedule_delayed_work(struct delayed_work *dwork, unsigned long delay);
int kblockd_schedule_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned long delay);
int kblockd_mod_delayed_work_on(int cpu, struct delayed_work *dwork, unsigned long delay);

#ifdef CONFIG_BLK_CGROUP
/*
 * This should not be using sched_clock(). A real patch is in progress
 * to fix this up, until that is in place we need to disable preemption
 * around sched_clock() in this function and set_io_start_time_ns().
 */
static inline void set_start_time_ns(struct request *req)
{
	preempt_disable();
	req->start_time_ns = sched_clock();
	preempt_enable();
}

static inline void set_io_start_time_ns(struct request *req)
{
	preempt_disable();
	req->io_start_time_ns = sched_clock();
	preempt_enable();
}

static inline uint64_t rq_start_time_ns(struct request *req)
{
        return req->start_time_ns;
}

static inline uint64_t rq_io_start_time_ns(struct request *req)
{
        return req->io_start_time_ns;
}
#else
static inline void set_start_time_ns(struct request *req) {}
static inline void set_io_start_time_ns(struct request *req) {}
static inline uint64_t rq_start_time_ns(struct request *req)
{
	return 0;
}
static inline uint64_t rq_io_start_time_ns(struct request *req)
{
	return 0;
}
#endif

#define MODULE_ALIAS_BLOCKDEV(major,minor) \
	MODULE_ALIAS("block-major-" __stringify(major) "-" __stringify(minor))
#define MODULE_ALIAS_BLOCKDEV_MAJOR(major) \
	MODULE_ALIAS("block-major-" __stringify(major) "-*")

#if defined(CONFIG_BLK_DEV_INTEGRITY)

enum blk_integrity_flags {
	BLK_INTEGRITY_VERIFY		= 1 << 0,
	BLK_INTEGRITY_GENERATE		= 1 << 1,
	BLK_INTEGRITY_DEVICE_CAPABLE	= 1 << 2,
	BLK_INTEGRITY_IP_CHECKSUM	= 1 << 3,
};

struct blk_integrity_iter {
	void			*prot_buf;
	void			*data_buf;
	sector_t		seed;
	unsigned int		data_size;
	unsigned short		interval;
	const char		*disk_name;
};

typedef blk_status_t (integrity_processing_fn) (struct blk_integrity_iter *);

struct blk_integrity_profile {
	integrity_processing_fn		*generate_fn;
	integrity_processing_fn		*verify_fn;
	const char			*name;
};

extern void blk_integrity_register(struct gendisk *, struct blk_integrity *);
extern void blk_integrity_unregister(struct gendisk *);
extern int blk_integrity_compare(struct gendisk *, struct gendisk *);
extern int blk_rq_map_integrity_sg(struct request_queue *, struct bio *,
				   struct scatterlist *);
extern int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
extern bool blk_integrity_merge_rq(struct request_queue *, struct request *,
				   struct request *);
extern bool blk_integrity_merge_bio(struct request_queue *, struct request *,
				    struct bio *);

static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
{
	struct blk_integrity *bi = &disk->queue->integrity;

if (!bi->profile)
		return NULL;

return bi;
}

static inline
struct blk_integrity *bdev_get_integrity(struct block_device *bdev)
{
	return blk_get_integrity(bdev->bd_disk);
}

static inline bool blk_integrity_rq(struct request *rq)
{
	return rq->cmd_flags & REQ_INTEGRITY;
}

static inline void blk_queue_max_integrity_segments(struct request_queue *q,
						    unsigned int segs)
{
	q->limits.max_integrity_segments = segs;
}

static inline unsigned short
queue_max_integrity_segments(struct request_queue *q)
{
	return q->limits.max_integrity_segments;
}

static inline bool integrity_req_gap_back_merge(struct request *req,
						struct bio *next)
{
	struct bio_integrity_payload *bip = bio_integrity(req->bio);
	struct bio_integrity_payload *bip_next = bio_integrity(next);

return bvec_gap_to_prev(req->q, &bip->bip_vec[bip->bip_vcnt - 1],
				bip_next->bip_vec[0].bv_offset);
}

static inline bool integrity_req_gap_front_merge(struct request *req,
						 struct bio *bio)
{
	struct bio_integrity_payload *bip = bio_integrity(bio);
	struct bio_integrity_payload *bip_next = bio_integrity(req->bio);

return bvec_gap_to_prev(req->q, &bip->bip_vec[bip->bip_vcnt - 1],
				bip_next->bip_vec[0].bv_offset);
}

#else /* CONFIG_BLK_DEV_INTEGRITY */

struct bio;
struct block_device;
struct gendisk;
struct blk_integrity;

static inline int blk_integrity_rq(struct request *rq)
{
	return 0;
}
static inline int blk_rq_count_integrity_sg(struct request_queue *q,
					    struct bio *b)
{
	return 0;
}
static inline int blk_rq_map_integrity_sg(struct request_queue *q,
					  struct bio *b,
					  struct scatterlist *s)
{
	return 0;
}
static inline struct blk_integrity *bdev_get_integrity(struct block_device *b)
{
	return NULL;
}
static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
{
	return NULL;
}
static inline int blk_integrity_compare(struct gendisk *a, struct gendisk *b)
{
	return 0;
}
static inline void blk_integrity_register(struct gendisk *d,
					 struct blk_integrity *b)
{
}
static inline void blk_integrity_unregister(struct gendisk *d)
{
}
static inline void blk_queue_max_integrity_segments(struct request_queue *q,
						    unsigned int segs)
{
}
static inline unsigned short queue_max_integrity_segments(struct request_queue *q)
{
	return 0;
}
static inline bool blk_integrity_merge_rq(struct request_queue *rq,
					  struct request *r1,
					  struct request *r2)
{
	return true;
}
static inline bool blk_integrity_merge_bio(struct request_queue *rq,
					   struct request *r,
					   struct bio *b)
{
	return true;
}

static inline bool integrity_req_gap_back_merge(struct request *req,
						struct bio *next)
{
	return false;
}
static inline bool integrity_req_gap_front_merge(struct request *req,
						 struct bio *bio)
{
	return false;
}

#endif /* CONFIG_BLK_DEV_INTEGRITY */

struct block_device_operations {
	int (*open) (struct block_device *, fmode_t);
	void (*release) (struct gendisk *, fmode_t);
	int (*rw_page)(struct block_device *, sector_t, struct page *, bool);
	int (*ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
	int (*compat_ioctl) (struct block_device *, fmode_t, unsigned, unsigned long);
	unsigned int (*check_events) (struct gendisk *disk,
				      unsigned int clearing);
	/* ->media_changed() is DEPRECATED, use ->check_events() instead */
	int (*media_changed) (struct gendisk *);
	void (*unlock_native_capacity) (struct gendisk *);
	int (*revalidate_disk) (struct gendisk *);
	int (*getgeo)(struct block_device *, struct hd_geometry *);
	/* this callback is with swap_lock and sometimes page table lock held */
	void (*swap_slot_free_notify) (struct block_device *, unsigned long);
	struct module *owner;
	const struct pr_ops *pr_ops;
};

extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int,
				 unsigned long);
extern int bdev_read_page(struct block_device *, sector_t, struct page *);
extern int bdev_write_page(struct block_device *, sector_t, struct page *,
						struct writeback_control *);
#else /* CONFIG_BLOCK */

struct block_device;

/*
 * stubs for when the block layer is configured out
 */
#define buffer_heads_over_limit 0

static inline long nr_blockdev_pages(void)
{
	return 0;
}

struct blk_plug {
};

static inline void blk_start_plug(struct blk_plug *plug)
{
}

static inline void blk_finish_plug(struct blk_plug *plug)
{
}

static inline void blk_flush_plug(struct task_struct *task)
{
}

static inline void blk_schedule_flush_plug(struct task_struct *task)
{
}

static inline bool blk_needs_flush_plug(struct task_struct *tsk)
{
	return false;
}

static inline int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
				     sector_t *error_sector)
{
	return 0;
}

#endif /* CONFIG_BLOCK */

#endif

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