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Darrick J. Wong efcfec579f loop: fix no-unmap write-zeroes request behavior 
Currently, if the loop device receives a WRITE_ZEROES request, it asks
the underlying filesystem to punch out the range.  This behavior is
correct if unmapping is allowed.  However, a NOUNMAP request means that
the caller doesn't want us to free the storage backing the range, so
punching out the range is incorrect behavior.

To satisfy a NOUNMAP | WRITE_ZEROES request, loop should ask the
underlying filesystem to FALLOC_FL_ZERO_RANGE, which is (according to
the fallocate documentation) required to ensure that the entire range is
backed by real storage, which suffices for our purposes.

Fixes: 19372e2769179dd ("loop: implement REQ_OP_WRITE_ZEROES")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-01 08:43:20 -06:00
..
accessibility
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acpi
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
amba
ARM updates for 5.4-rc1:
2019-09-22 09:39:09 -07:00
android
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ata
ata: libahci_platform: Add of_node_put() before loop exit
2019-09-19 12:21:44 -06:00
atm
atm: he: clean up an indentation issue
2019-09-25 13:54:45 +02:00
auxdisplay
It's a somewhat calmer cycle for docs this time, as the churn of the mass
2019-09-17 16:22:26 -07:00
base
mm,thp: stats for file backed THP
2019-09-24 15:54:11 -07:00
bcma
bcma: make arrays pwr_info_offset and sprom_sizes static const, shrinks object size
2019-09-13 16:44:49 +03:00
block
loop: fix no-unmap write-zeroes request behavior
2019-11-01 08:43:20 -06:00
bluetooth
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-15 14:17:27 +02:00
bus
ARM: SoC fixes
2019-09-30 10:04:28 -07:00
cdrom
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char
char/random: Add a newline at the end of the file
2019-10-02 13:49:43 -07:00
clk
Fixes for omaps for v5.4-rc cycle
2019-10-03 09:15:19 -07:00
clocksource
timer-of: don't use conditional expression with mixed 'void' types
2019-10-02 16:16:07 -07:00
connector
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counter
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cpufreq
Power management updates for 5.4-rc1
2019-09-17 19:15:14 -07:00
cpuidle
Power management updates for 5.4-rc1
2019-09-17 19:15:14 -07:00
crypto
Merge branch 'akpm' (patches from Andrew)
2019-09-24 16:10:23 -07:00
dax
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dca
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devfreq
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dio
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dma
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
dma-buf
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edac
ARM updates for 5.4-rc1:
2019-09-22 09:39:09 -07:00
eisa
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extcon
chrome platform changes for v5.4
2019-09-19 14:14:28 -07:00
firewire
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firmware
ARM: SoC fixes
2019-09-30 10:04:28 -07:00
fpga
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
fsi
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gnss
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gpio
pwm: Changes for v5.4-rc1
2019-09-27 12:19:47 -07:00
gpu
- Fix DP-MST crtc_mask
2019-10-04 16:31:06 +10:00
greybus
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hid
- First round of vmbus hibernation support from Dexuan Cui.
2019-09-24 12:36:31 -07:00
hsi
HSI changes for the 5.4 series
2019-09-22 12:02:21 -07:00
hv
- First round of vmbus hibernation support from Dexuan Cui.
2019-09-24 12:36:31 -07:00
hwmon
ARM SCMI fixes for v5.4
2019-09-29 11:20:41 -07:00
hwspinlock
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hwtracing
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
i2c
i2c: slave-eeprom: Add read only mode
2019-09-28 20:44:12 +02:00
i3c
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ide
…
idle
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iio
chrome platform changes for v5.4
2019-09-19 14:14:28 -07:00
infiniband
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-28 17:47:33 -07:00
input
chrome platform changes for v5.4
2019-09-19 14:14:28 -07:00
interconnect
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iommu
IOMMU Fixes for Linux v5.4-rc1
2019-09-29 10:00:14 -07:00
ipack
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irqchip
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
isdn
mISDN: enforce CAP_NET_RAW for raw sockets
2019-09-24 16:37:18 +02:00
leds
leds: lm3532: Fix optional led-max-microamp prop error handling
2019-09-12 20:45:52 +02:00
lightnvm
lightnvm: print error when target is not found
2019-09-05 13:17:01 -06:00
macintosh
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mailbox
mailbox: qcom-apcs: fix max_register value
2019-09-17 00:54:29 -05:00
mcb
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md
md: no longer compare spare disk superblock events in super_load
2019-10-24 15:22:40 -07:00
media
media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get
2019-09-25 17:51:41 -07:00
memory
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memstick
ms_block: fix spelling mistake "randomally" -> "randomly"
2019-09-11 16:11:01 +02:00
message
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mfd
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
2019-09-29 10:24:23 -07:00
misc
Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2019-09-24 16:48:02 -07:00
mmc
mmc: host: sdhci-pci: Add Genesys Logic GL975x support
2019-09-27 20:48:20 +02:00
mtd
Main MIPS changes for v5.4:
2019-09-22 09:30:30 -07:00
mux
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net
net: qlogic: Fix memory leak in ql_alloc_large_buffers
2019-10-04 18:33:13 -07:00
nfc
NFC: st95hf: clean up indentation issue
2019-09-27 20:31:18 +02:00
ntb
NTB: fix IDT Kconfig typos/spellos
2019-09-23 17:20:40 -04:00
nubus
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nvdimm
libnvdimm fixes v5.4-rc1
2019-09-29 10:33:41 -07:00
nvme
Merge branch 'nvme-5.4' of git://git.infradead.org/nvme into for-linus
2019-09-27 13:17:37 -06:00
nvmem
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
of
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-28 17:47:33 -07:00
opp
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oprofile
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parisc
dma-mapping updates for 5.4:
2019-09-19 13:27:23 -07:00
parport
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
pci
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
pcmcia
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
perf
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phy
pci-v5.4-changes
2019-09-23 19:16:01 -07:00
pinctrl
This is the bulk of pin control changes for the v5.4 kernel
2019-09-19 14:19:33 -07:00
platform
platform-drivers-x86 for v5.4-2
2019-09-24 12:39:40 -07:00
pnp
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power
power supply and reset changes for the v5.4 series
2019-09-22 12:04:59 -07:00
powercap
Power management updates for 5.4-rc1
2019-09-17 19:15:14 -07:00
pps
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ps3
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ptp
ptp_qoriq: Initialize the registers' spinlock before calling ptp_qoriq_settime
2019-10-02 12:20:38 -04:00
pwm
pwm: Changes for v5.4-rc1
2019-09-27 12:19:47 -07:00
rapidio
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ras
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regulator
LED updates for 5.4-rc1
2019-09-17 18:40:42 -07:00
remoteproc
remoteproc updates for v5.4
2019-09-22 10:55:08 -07:00
reset
ARM: SoC fixes
2019-09-30 10:04:28 -07:00
rpmsg
rpmsg: glink-smem: Name the edge based on parent remoteproc
2019-09-17 15:33:31 -07:00
rtc
RTC for 5.4
2019-09-22 11:05:43 -07:00
s390
s390 updates for 5.4-rc2
2019-10-05 08:44:02 -07:00
sbus
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scsi
SCSI fixes on 20191004
2019-10-05 12:53:27 -07:00
sfi
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sh
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siox
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slimbus
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soc
ARM: SoC driver updates for v5.4
2019-09-16 15:52:38 -07:00
soundwire
soundwire updates for v5.4-rc1
2019-09-22 10:52:23 -07:00
spi
LED updates for 5.4-rc1
2019-09-17 18:40:42 -07:00
spmi
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ssb
ssb: make array pwr_info_offset static const, makes object smaller
2019-09-13 17:23:18 +03:00
staging
netfilter: drop bridge nf reset from nf_reset
2019-10-01 18:42:15 +02:00
target
mm: introduce page_size()
2019-09-24 15:54:08 -07:00
tc
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tee
tee/shm: untag user pointers in tee_shm_register
2019-09-25 17:51:41 -07:00
thermal
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal
2019-09-29 10:24:23 -07:00
thunderbolt
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tty
Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
2019-09-28 08:14:15 -07:00
uio
Char/Misc driver patches for 5.4-rc1
2019-09-18 11:14:31 -07:00
usb
Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2019-09-24 12:33:34 -07:00
vfio
vfio/type1: untag user pointers in vaddr_get_pfn
2019-09-25 17:51:41 -07:00
vhost
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2019-09-15 14:17:27 +02:00
video
video/logo: do not generate unneeded logo C files
2019-10-05 15:29:49 +09:00
virt
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virtio
virtio_ring: fix unmap of indirect descriptors
2019-09-09 10:43:15 -04:00
visorbus
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vlynq
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vme
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w1
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watchdog
linux-watchdog 5.4-rc1 tag
2019-09-27 11:17:38 -07:00
xen
xen: fixes and cleanups for 5.4-rc2
2019-10-04 11:13:09 -07:00
zorro
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Kconfig
Staging/IIO driver patches for 5.4-rc1
2019-09-18 11:05:34 -07:00
Makefile
Staging/IIO driver patches for 5.4-rc1
2019-09-18 11:05:34 -07:00