Weijie Yang 38515c7339 zram: correct offset usage in zram_bio_discard ... We want to skip the physical block(PAGE_SIZE) which is partially covered by the discard bio, so we check the remaining size and subtract it if there is a need to goto the next physical block. The current offset usage in zram_bio_discard is incorrect, it will cause its upper filesystem breakdown. Consider the following scenario: On some architecture or config, PAGE_SIZE is 64K for example, filesystem is set up on zram disk without PAGE_SIZE aligned, a discard bio leads to a offset = 4K and size=72K, normally, it should not really discard any physical block as it partially cover two physical blocks. However, with the current offset usage, it will discard the second physical block and free its memory, which will cause filesystem breakdown. This patch corrects the offset usage in zram_bio_discard. Signed-off-by: Weijie Yang <weijie.yang@samsung.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Bob Liu <bob.liu@oracle.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-06-04 16:54:13 -07:00
..
accessibility
acpi	ACPI and power management updates for 3.16-rc1	2014-06-04 08:57:16 -07:00
amba
ata
atm
auxdisplay
base	cma: increase CMA_ALIGNMENT upper limit to 12	2014-06-04 16:54:08 -07:00
bcma
block	zram: correct offset usage in zram_bio_discard	2014-06-04 16:54:13 -07:00
bluetooth	TTY/Serial driver patches for 3.16-rc1	2014-06-03 09:01:02 -07:00
bus	ARM: SoC driver changes	2014-06-02 16:35:49 -07:00
cdrom
char	ACPI and power management updates for 3.16-rc1	2014-06-04 08:57:16 -07:00
clk	DeviceTree for 3.16:	2014-06-04 10:02:38 -07:00
clocksource	DeviceTree for 3.16:	2014-06-04 10:02:38 -07:00
connector	Char / misc driver patches for 3.16-rc1	2014-06-03 08:06:56 -07:00
cpufreq	ACPI and power management updates for 3.16-rc1	2014-06-04 08:57:16 -07:00
cpuidle	ACPI and power management updates for 3.16-rc1	2014-06-04 08:57:16 -07:00
crypto	crypto/nx/nx-842: dev_set_drvdata can no longer fail	2014-05-28 13:39:51 -07:00
dca
devfreq
dio
dma	ARM: SoC driver changes	2014-06-02 16:35:49 -07:00
edac	PCI changes for the v3.16 merge window:	2014-06-02 12:15:19 -07:00
eisa
extcon
firewire	sound updates for 3.16-rc1	2014-06-04 09:08:25 -07:00
firmware
fmc
gpio	This is the bulk of GPIO changes for the v3.16 series:	2014-06-02 08:46:03 -07:00
gpu	drm/exynos: call find_vma with the mmap_sem held	2014-06-04 16:54:00 -07:00
hid	Merge branches 'for-3.16/i2c-hid', 'for-3.16/rmi4', 'for-3.16/sony' and 'for-3.16/thingm' into for-linus	2014-06-04 13:09:43 +02:00
hsi
hv	hv: use correct order when freeing monitor_pages	2014-05-28 13:45:15 -07:00
hwmon	New driver for NCT6683D	2014-06-03 11:09:43 -07:00
hwspinlock
i2c
ide
idle
iio	Staging driver patches for 3.16-rc1	2014-06-03 08:34:00 -07:00
infiniband
input	ARM: SoC updates for 3.16 (part 1)	2014-06-02 16:15:12 -07:00
iommu	intel-iommu: integrate DMA CMA	2014-06-04 16:53:57 -07:00
ipack
irqchip	DeviceTree for 3.16:	2014-06-04 10:02:38 -07:00
isdn
leds	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid into next	2014-06-04 08:52:36 -07:00
lguest
macintosh
mailbox
mcb	mcb: Add support for shared PCI IRQs	2014-05-27 17:38:11 -07:00
md	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 12:57:53 -07:00
media	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 12:57:53 -07:00
memory
memstick
message
mfd	sound updates for 3.16-rc1	2014-06-04 09:08:25 -07:00
misc	Merge branch 'x86-uv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 15:48:23 -07:00
mmc	Updates for mmci driver:	2014-06-02 09:22:24 -07:00
mtd	Merge branch 'for-3.16/core' of git://git.kernel.dk/linux-block into next	2014-06-02 09:29:34 -07:00
net	ACPI and power management updates for 3.16-rc1	2014-06-04 08:57:16 -07:00
nfc
ntb
nubus
of	DeviceTree for 3.16:	2014-06-04 10:02:38 -07:00
oprofile
parisc
parport	parport: Add support for the WCH353 1S/1P multi-IO card	2014-05-28 12:30:48 -07:00
pci	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
pcmcia	pcmcia: Use pci_is_bridge() to simplify code	2014-05-27 14:58:24 -06:00
phy
pinctrl	This is the bulk of pin control changes for the v3.16	2014-06-03 11:20:32 -07:00
platform	ACPI and power management updates for 3.16-rc1	2014-06-04 08:57:16 -07:00
pnp	Merge branches 'pnp', 'powercap', 'pm-runtime' and 'pm-opp'	2014-06-03 23:13:00 +02:00
power	ACPI and power management updates for 3.16-rc1	2014-06-04 08:57:16 -07:00
powercap
pps
ps3
ptp
pwm
rapidio
regulator	regulator: Updates for v3.16	2014-06-03 11:44:48 -07:00
remoteproc
reset	ARM: SoC driver changes	2014-06-02 16:35:49 -07:00
rpmsg
rtc
s390	At over 200 commits, covering almost all supported architectures, this	2014-06-04 08:47:12 -07:00
sbus
scsi	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
sfi
sh	Merge back earlier cpufreq material.	2014-06-03 15:03:27 +02:00
sn
soc
spi	Merge remote-tracking branch 'spi/topic/workqueue' into spi-next	2014-06-02 17:08:43 +01:00
spmi
ssb
staging	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial into next	2014-06-04 08:50:34 -07:00
target	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 12:57:53 -07:00
tc
thermal
tty	DeviceTree for 3.16:	2014-06-04 10:02:38 -07:00
uio	uio: fix vma io range check in mmap	2014-05-27 14:11:06 -07:00
usb	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 12:57:53 -07:00
uwb	uwb: fix variable set but not used warnings	2014-05-27 15:18:48 -07:00
vfio	driver core: dev_set_drvdata can no longer fail	2014-05-27 13:40:51 -07:00
vhost
video	fbdev changes for 3.16 (omap)	2014-06-04 09:07:08 -07:00
virt
virtio
vlynq
vme
w1	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 12:57:53 -07:00
watchdog
xen	Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-03 12:57:53 -07:00
zorro
Kconfig
Makefile	Char / misc driver patches for 3.16-rc1	2014-06-03 08:06:56 -07:00