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Peter Kalauskas c8bd134a4b drivers/block/zram/zram_drv.c: fix bug storing backing_dev 
The call to strlcpy in backing_dev_store is incorrect. It should take
the size of the destination buffer instead of the size of the source
buffer.  Additionally, ignore the newline character (\n) when reading
the new file_name buffer. This makes it possible to set the backing_dev
as follows:

	echo /dev/sdX > /sys/block/zram0/backing_dev

The reason it worked before was the fact that strlcpy() copies 'len - 1'
bytes, which is strlen(buf) - 1 in our case, so it accidentally didn't
copy the trailing new line symbol.  Which also means that "echo -n
/dev/sdX" most likely was broken.

Signed-off-by: Peter Kalauskas <peskal@google.com>
Link: http://lkml.kernel.org/r/20180813061623.GC64836@rodete-desktop-imager.corp.google.com
Acked-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: <stable@vger.kernel.org>    [4.14+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2018-08-22 10:52:45 -07:00
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accessibility
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acpi arm64 updates for 4.19 2018-08-14 16:39:13 -07:00
amba
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android android: binder: Rate-limit debug and userspace triggered err msgs 2018-08-08 11:05:47 +02:00
ata Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
atm
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auxdisplay Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
base Driver core patches for 4.19-rc1 2018-08-18 11:44:53 -07:00
bcma
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block drivers/block/zram/zram_drv.c: fix bug storing backing_dev 2018-08-22 10:52:45 -07:00
bluetooth Bluetooth: mediatek: pass correct size to h4_recv_buf() 2018-08-13 15:59:39 +02:00
bus VLA leftovers pull summary: 2018-08-17 10:40:09 -07:00
cdrom cdrom: Use struct scsi_sense_hdr internally 2018-08-02 15:22:39 -06:00
char RTC for 4.19 2018-08-20 16:30:27 -07:00
clk The new and exciting feature this time around is in the clk core. 2018-08-15 21:41:21 -07:00
clocksource RISC-V Updates for the 4.19 Merge Window 2018-08-19 09:56:38 -07:00
connector
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cpufreq powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
cpuidle powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
crypto Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
dax dax: remove VM_MIXEDMAP for fsdax and device dax 2018-08-17 16:20:27 -07:00
dca
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devfreq Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
dio
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dma DMAengine updates for v4.19-rc1 2018-08-18 15:55:59 -07:00
dma-buf
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edac EDAC: Add missing MEM_LRDDR4 entry in edac_mem_types[] 2018-08-17 15:13:34 +02:00
eisa
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extcon
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firewire firewire: use 64-bit time_t based interfaces 2018-08-17 16:20:27 -07:00
firmware Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
fmc
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fpga
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fsi fsi: sbefifo: Bump max command length 2018-08-08 15:44:47 +10:00
gnss
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gpio - New Drivers 2018-08-20 15:38:44 -07:00
gpu mm, oom: distinguish blockable mode for mmu notifiers 2018-08-22 10:52:44 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2018-08-20 15:59:01 -07:00
hsi
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hv Drivers: hv: vmbus: Cleanup synic memory free path 2018-08-02 10:20:59 +02:00
hwmon Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
hwspinlock
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hwtracing
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i2c regmap: Changes for v4.19 2018-08-14 11:51:03 -07:00
ide ide-cd: Remove redundant sense buffer 2018-08-02 15:22:37 -06:00
idle
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iio
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infiniband mm, oom: distinguish blockable mode for mmu notifiers 2018-08-22 10:52:44 -07:00
input - New Drivers 2018-08-20 15:38:44 -07:00
iommu Driver core patches for 4.19-rc1 2018-08-18 11:44:53 -07:00
ipack
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irqchip RISC-V Updates for the 4.19 Merge Window 2018-08-19 09:56:38 -07:00
isdn isdn: Disable IIOCDBGVAR 2018-08-16 12:26:24 -07:00
leds leds: ns2: Change unsigned to unsigned int 2018-08-06 23:03:12 +02:00
lightnvm
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macintosh
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mailbox mailbox: Add support for i.MX messaging unit 2018-08-15 09:53:07 +05:30
mcb
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md Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-08-18 16:48:07 -07:00
media - New Drivers 2018-08-20 15:38:44 -07:00
memory Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
memstick
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message
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mfd - New Drivers 2018-08-20 15:38:44 -07:00
misc mm, oom: distinguish blockable mode for mmu notifiers 2018-08-22 10:52:44 -07:00
mmc Merge branch 'asoc-4.19' into asoc-next 2018-08-09 14:47:05 +01:00
mtd Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
mux mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux 2018-08-02 10:23:02 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-08-19 11:51:45 -07:00
nfc
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ntb
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nubus
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nvdimm Linux 4.18-rc6 2018-08-05 19:32:09 -06:00
nvme Merge branch 'linus/master' into rdma.git for-next 2018-08-16 14:21:29 -06:00
nvmem
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of Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
opp
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oprofile
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parisc
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parport Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pci pci-v4.19-changes 2018-08-16 09:21:54 -07:00
pcmcia pcmcia: remove long deprecated pcmcia_request_exclusive_irq() function 2018-08-18 12:30:42 -07:00
perf Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
phy
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pinctrl - New Drivers 2018-08-20 15:38:44 -07:00
platform - New Drivers 2018-08-20 15:38:44 -07:00
pnp
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power
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powercap
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pps
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ps3
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ptp Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
pwm
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rapidio
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ras
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regulator - New Drivers 2018-08-20 15:38:44 -07:00
remoteproc remoteproc/davinci: use the reset framework 2018-08-16 17:39:55 -07:00
reset
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rpmsg
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rtc RTC for 4.19 2018-08-20 16:30:27 -07:00
s390 TTY/Serial driver patches for 4.19-rc1 2018-08-18 10:50:41 -07:00
sbus
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scsi Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
sfi
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sh sh: introduce a sh_cacheop_vaddr helper 2018-08-02 13:54:06 +02:00
siox
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slimbus
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sn
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soc remoteproc updates for v4.19 2018-08-18 16:42:04 -07:00
soundwire
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spi hwspinlock updates for v4.19 2018-08-18 16:45:27 -07:00
spmi
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ssb ssb: Remove SSB_WARN_ON, SSB_BUG_ON and SSB_DEBUG 2018-08-09 18:47:47 +03:00
staging Staging/IIO patches for 4.19-rc1 2018-08-18 11:00:00 -07:00
target SCSI misc on 20180815 2018-08-15 22:06:26 -07:00
tc
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tee
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thermal Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/evalenti/linux-soc-thermal 2018-08-16 10:21:18 -07:00
thunderbolt
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tty Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
uio Char/Misc fix for 4.19-rc1 2018-08-19 09:30:44 -07:00
usb Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
uwb
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vfio powerpc updates for 4.19 2018-08-17 11:32:50 -07:00
vhost SCSI misc on 20180815 2018-08-15 22:06:26 -07:00
video - Core Frameworks 2018-08-20 15:41:37 -07:00
virt
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virtio virtio: Make vp_set_vq_affinity() take a mask. 2018-08-11 12:02:18 -07:00
visorbus
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vlynq
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vme
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w1 Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00
watchdog linux-watchdog 4.19-rc1 tag 2018-08-18 16:16:57 -07:00
xen mm, oom: distinguish blockable mode for mmu notifiers 2018-08-22 10:52:44 -07:00
zorro
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Kconfig
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Makefile Char/Misc driver patches for 4.19-rc1 2018-08-18 11:04:51 -07:00