https://github.com/torvalds/linux
Revision 86613628b3d367743f71b945c203774c522404f4 authored by Jan Stancek on 09 March 2016, 22:08:35 UTC, committed by Linus Torvalds on 09 March 2016, 23:43:42 UTC
Replace ENOTSUPP with EOPNOTSUPP. If hugepages are not supported, this value is propagated to userspace. EOPNOTSUPP is part of uapi and is widely supported by libc libraries. It gives nicer message to user, rather than: # cat /proc/sys/vm/nr_hugepages cat: /proc/sys/vm/nr_hugepages: Unknown error 524 And also LTP's proc01 test was failing because this ret code (524) was unexpected: proc01 1 TFAIL : proc01.c:396: read failed: /proc/sys/vm/nr_hugepages: errno=???(524): Unknown error 524 proc01 2 TFAIL : proc01.c:396: read failed: /proc/sys/vm/nr_hugepages_mempolicy: errno=???(524): Unknown error 524 proc01 3 TFAIL : proc01.c:396: read failed: /proc/sys/vm/nr_overcommit_hugepages: errno=???(524): Unknown error 524 Signed-off-by: Jan Stancek <jstancek@redhat.com> Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tip revision: 86613628b3d367743f71b945c203774c522404f4 authored by Jan Stancek on 09 March 2016, 22:08:35 UTC
mm/hugetlb: use EOPNOTSUPP in hugetlb sysctl handlers
mm/hugetlb: use EOPNOTSUPP in hugetlb sysctl handlers
Tip revision: 8661362
File | Mode | Size |
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ABI | ||
DocBook | ||
EDID | ||
PCI | ||
RCU | ||
accounting | ||
acpi | ||
aoe | ||
arm | ||
arm64 | ||
auxdisplay | ||
backlight | ||
blackfin | ||
block | ||
blockdev | ||
bus-devices | ||
cdrom | ||
cgroup-v1 | ||
cma | ||
connector | ||
console | ||
cpu-freq | ||
cpuidle | ||
cris | ||
crypto | ||
development-process | ||
device-mapper | ||
devicetree | ||
dmaengine | ||
driver-model | ||
dvb | ||
early-userspace | ||
extcon | ||
fault-injection | ||
fb | ||
features | ||
filesystems | ||
firmware_class | ||
fmc | ||
fpga | ||
frv | ||
gpio | ||
hid | ||
hwmon | ||
i2c | ||
ia64 | ||
ide | ||
iio | ||
infiniband | ||
input | ||
ioctl | ||
isdn | ||
ja_JP | ||
kbuild | ||
kdump | ||
ko_KR | ||
laptops | ||
leds | ||
locking | ||
m68k | ||
memory-devices | ||
metag | ||
mic | ||
mips | ||
misc-devices | ||
mmc | ||
mn10300 | ||
mtd | ||
namespaces | ||
netlabel | ||
networking | ||
nfc | ||
nios2 | ||
nvdimm | ||
nvmem | ||
parisc | ||
pcmcia | ||
phy | ||
platform | ||
power | ||
powerpc | ||
pps | ||
prctl | ||
pti | ||
ptp | ||
rapidio | ||
s390 | ||
scheduler | ||
scsi | ||
security | ||
serial | ||
sh | ||
sound | ||
spi | ||
sysctl | ||
target | ||
thermal | ||
timers | ||
tpm | ||
trace | ||
usb | ||
vDSO | ||
video4linux | ||
virtual | ||
vm | ||
w1 | ||
watchdog | ||
wimax | ||
x86 | ||
xtensa | ||
zh_CN | ||
00-INDEX | -rw-r--r-- | 16.8 KB |
BUG-HUNTING | -rw-r--r-- | 8.1 KB |
Changes | -rw-r--r-- | 11.6 KB |
CodeOfConflict | -rw-r--r-- | 1.4 KB |
CodingStyle | -rw-r--r-- | 34.0 KB |
DMA-API-HOWTO.txt | -rw-r--r-- | 34.7 KB |
DMA-API.txt | -rw-r--r-- | 27.5 KB |
DMA-ISA-LPC.txt | -rw-r--r-- | 5.2 KB |
DMA-attributes.txt | -rw-r--r-- | 4.5 KB |
HOWTO | -rw-r--r-- | 27.1 KB |
IPMI.txt | -rw-r--r-- | 29.4 KB |
IRQ-affinity.txt | -rw-r--r-- | 2.5 KB |
IRQ-domain.txt | -rw-r--r-- | 10.0 KB |
IRQ.txt | -rw-r--r-- | 962 bytes |
Intel-IOMMU.txt | -rw-r--r-- | 3.8 KB |
Makefile | -rw-r--r-- | 177 bytes |
ManagementStyle | -rw-r--r-- | 12.9 KB |
SAK.txt | -rw-r--r-- | 2.8 KB |
SM501.txt | -rw-r--r-- | 2.8 KB |
SecurityBugs | -rw-r--r-- | 1.8 KB |
SubmitChecklist | -rw-r--r-- | 4.4 KB |
SubmittingDrivers | -rw-r--r-- | 6.2 KB |
SubmittingPatches | -rw-r--r-- | 35.7 KB |
VGA-softcursor.txt | -rw-r--r-- | 2.0 KB |
adding-syscalls.txt | -rw-r--r-- | 23.8 KB |
applying-patches.txt | -rw-r--r-- | 19.5 KB |
assoc_array.txt | -rw-r--r-- | 20.0 KB |
atomic_ops.txt | -rw-r--r-- | 22.0 KB |
bad_memory.txt | -rw-r--r-- | 1.1 KB |
basic_profiling.txt | -rw-r--r-- | 1.7 KB |
bcache.txt | -rw-r--r-- | 16.4 KB |
binfmt_misc.txt | -rw-r--r-- | 6.5 KB |
braille-console.txt | -rw-r--r-- | 1.4 KB |
bt8xxgpio.txt | -rw-r--r-- | 4.3 KB |
btmrvl.txt | -rw-r--r-- | 2.9 KB |
bus-virt-phys-mapping.txt | -rw-r--r-- | 7.9 KB |
cachetlb.txt | -rw-r--r-- | 17.1 KB |
cgroup-v2.txt | -rw-r--r-- | 50.6 KB |
circular-buffers.txt | -rw-r--r-- | 8.4 KB |
clk.txt | -rw-r--r-- | 10.3 KB |
coccinelle.txt | -rw-r--r-- | 9.0 KB |
cpu-hotplug.txt | -rw-r--r-- | 16.8 KB |
cpu-load.txt | -rw-r--r-- | 3.0 KB |
cputopology.txt | -rw-r--r-- | 4.5 KB |
crc32.txt | -rw-r--r-- | 8.5 KB |
dcdbas.txt | -rw-r--r-- | 3.6 KB |
debugging-modules.txt | -rw-r--r-- | 954 bytes |
debugging-via-ohci1394.txt | -rw-r--r-- | 7.4 KB |
dell_rbu.txt | -rw-r--r-- | 4.9 KB |
devices.txt | -rw-r--r-- | 116.2 KB |
digsig.txt | -rw-r--r-- | 2.8 KB |
dma-buf-sharing.txt | -rw-r--r-- | 20.9 KB |
dontdiff | -rw-r--r-- | 2.5 KB |
dynamic-debug-howto.txt | -rw-r--r-- | 12.6 KB |
edac.txt | -rw-r--r-- | 24.7 KB |
efi-stub.txt | -rw-r--r-- | 3.2 KB |
eisa.txt | -rw-r--r-- | 7.1 KB |
email-clients.txt | -rw-r--r-- | 10.9 KB |
flexible-arrays.txt | -rw-r--r-- | 5.5 KB |
futex-requeue-pi.txt | -rw-r--r-- | 5.0 KB |
gcov.txt | -rw-r--r-- | 7.6 KB |
gdb-kernel-debugging.txt | -rw-r--r-- | 5.9 KB |
highuid.txt | -rw-r--r-- | 2.4 KB |
hsi.txt | -rw-r--r-- | 2.9 KB |
hw_random.txt | -rw-r--r-- | 3.5 KB |
hwspinlock.txt | -rw-r--r-- | 12.7 KB |
init.txt | -rw-r--r-- | 2.5 KB |
initrd.txt | -rw-r--r-- | 14.1 KB |
intel_txt.txt | -rw-r--r-- | 10.2 KB |
io-mapping.txt | -rw-r--r-- | 3.2 KB |
io_ordering.txt | -rw-r--r-- | 1.9 KB |
iostats.txt | -rw-r--r-- | 8.0 KB |
irqflags-tracing.txt | -rw-r--r-- | 2.3 KB |
isapnp.txt | -rw-r--r-- | 433 bytes |
java.txt | -rw-r--r-- | 10.9 KB |
kasan.txt | -rw-r--r-- | 8.2 KB |
kernel-doc-nano-HOWTO.txt | -rw-r--r-- | 11.7 KB |
kernel-docs.txt | -rw-r--r-- | 33.0 KB |
kernel-parameters.txt | -rw-r--r-- | 150.7 KB |
kernel-per-CPU-kthreads.txt | -rw-r--r-- | 13.2 KB |
kmemcheck.txt | -rw-r--r-- | 29.9 KB |
kmemleak.txt | -rw-r--r-- | 8.5 KB |
kobject.txt | -rw-r--r-- | 18.0 KB |
kprobes.txt | -rw-r--r-- | 30.3 KB |
kref.txt | -rw-r--r-- | 8.4 KB |
kselftest.txt | -rw-r--r-- | 2.4 KB |
ldm.txt | -rw-r--r-- | 3.8 KB |
local_ops.txt | -rw-r--r-- | 6.5 KB |
lockup-watchdogs.txt | -rw-r--r-- | 4.1 KB |
logo.gif | -rw-r--r-- | 16.0 KB |
logo.txt | -rw-r--r-- | 563 bytes |
lzo.txt | -rw-r--r-- | 7.8 KB |
magic-number.txt | -rw-r--r-- | 8.7 KB |
mailbox.txt | -rw-r--r-- | 4.1 KB |
md-cluster.txt | -rw-r--r-- | 12.3 KB |
md.txt | -rw-r--r-- | 25.3 KB |
memory-barriers.txt | -rw-r--r-- | 109.3 KB |
memory-hotplug.txt | -rw-r--r-- | 17.1 KB |
men-chameleon-bus.txt | -rw-r--r-- | 6.1 KB |
module-signing.txt | -rw-r--r-- | 10.3 KB |
mono.txt | -rw-r--r-- | 2.5 KB |
nommu-mmap.txt | -rw-r--r-- | 12.7 KB |
ntb.txt | -rw-r--r-- | 6.3 KB |
numastat.txt | -rw-r--r-- | 836 bytes |
oops-tracing.txt | -rw-r--r-- | 12.8 KB |
padata.txt | -rw-r--r-- | 7.3 KB |
parport-lowlevel.txt | -rw-r--r-- | 32.2 KB |
parport.txt | -rw-r--r-- | 8.8 KB |
percpu-rw-semaphore.txt | -rw-r--r-- | 1.1 KB |
phy.txt | -rw-r--r-- | 6.9 KB |
pi-futex.txt | -rw-r--r-- | 5.7 KB |
pinctrl.txt | -rw-r--r-- | 50.4 KB |
pnp.txt | -rw-r--r-- | 6.8 KB |
preempt-locking.txt | -rw-r--r-- | 5.2 KB |
printk-formats.txt | -rw-r--r-- | 9.6 KB |
pwm.txt | -rw-r--r-- | 4.7 KB |
ramoops.txt | -rw-r--r-- | 5.2 KB |
rbtree.txt | -rw-r--r-- | 13.3 KB |
remoteproc.txt | -rw-r--r-- | 12.7 KB |
rfkill.txt | -rw-r--r-- | 4.8 KB |
robust-futex-ABI.txt | -rw-r--r-- | 8.7 KB |
robust-futexes.txt | -rw-r--r-- | 9.4 KB |
rpmsg.txt | -rw-r--r-- | 13.5 KB |
rtc.txt | -rw-r--r-- | 9.9 KB |
serial-console.txt | -rw-r--r-- | 4.0 KB |
sgi-ioc4.txt | -rw-r--r-- | 2.0 KB |
smsc_ece1099.txt | -rw-r--r-- | 2.4 KB |
sparse.txt | -rw-r--r-- | 3.8 KB |
stable_api_nonsense.txt | -rw-r--r-- | 9.2 KB |
stable_kernel_rules.txt | -rw-r--r-- | 6.0 KB |
static-keys.txt | -rw-r--r-- | 11.5 KB |
svga.txt | -rw-r--r-- | 14.1 KB |
sysfs-rules.txt | -rw-r--r-- | 9.0 KB |
sysrq.txt | -rw-r--r-- | 11.8 KB |
this_cpu_ops.txt | -rw-r--r-- | 11.1 KB |
ubsan.txt | -rw-r--r-- | 3.1 KB |
unaligned-memory-access.txt | -rw-r--r-- | 10.4 KB |
unicode.txt | -rw-r--r-- | 6.5 KB |
unshare.txt | -rw-r--r-- | 13.1 KB |
vfio.txt | -rw-r--r-- | 21.3 KB |
vgaarbiter.txt | -rw-r--r-- | 8.1 KB |
video-output.txt | -rw-r--r-- | 1.1 KB |
vme_api.txt | -rw-r--r-- | 13.4 KB |
volatile-considered-harmful.txt | -rw-r--r-- | 5.6 KB |
workqueue.txt | -rw-r--r-- | 14.7 KB |
xillybus.txt | -rw-r--r-- | 17.7 KB |
xz.txt | -rw-r--r-- | 5.7 KB |
zorro.txt | -rw-r--r-- | 2.9 KB |
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