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
ACPI and power management updates for 3.16-rc1
2014-06-04 08:57:16 -07:00
cma: increase CMA_ALIGNMENT upper limit to 12
2014-06-04 16:54:08 -07:00
zram: correct offset usage in zram_bio_discard
2014-06-04 16:54:13 -07:00
TTY/Serial driver patches for 3.16-rc1
2014-06-03 09:01:02 -07:00
ARM: SoC driver changes
2014-06-02 16:35:49 -07:00
ACPI and power management updates for 3.16-rc1
2014-06-04 08:57:16 -07:00
DeviceTree for 3.16:
2014-06-04 10:02:38 -07:00
DeviceTree for 3.16:
2014-06-04 10:02:38 -07:00
Char / misc driver patches for 3.16-rc1
2014-06-03 08:06:56 -07:00
ACPI and power management updates for 3.16-rc1
2014-06-04 08:57:16 -07:00
ACPI and power management updates for 3.16-rc1
2014-06-04 08:57:16 -07:00
crypto/nx/nx-842: dev_set_drvdata can no longer fail
2014-05-28 13:39:51 -07:00
ARM: SoC driver changes
2014-06-02 16:35:49 -07:00
PCI changes for the v3.16 merge window:
2014-06-02 12:15:19 -07:00
sound updates for 3.16-rc1
2014-06-04 09:08:25 -07:00
This is the bulk of GPIO changes for the v3.16 series:
2014-06-02 08:46:03 -07:00
drm/exynos: call find_vma with the mmap_sem held
2014-06-04 16:54:00 -07:00
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
hv: use correct order when freeing monitor_pages
2014-05-28 13:45:15 -07:00
New driver for NCT6683D
2014-06-03 11:09:43 -07:00
Staging driver patches for 3.16-rc1
2014-06-03 08:34:00 -07:00
ARM: SoC updates for 3.16 (part 1)
2014-06-02 16:15:12 -07:00
intel-iommu: integrate DMA CMA
2014-06-04 16:53:57 -07:00
DeviceTree for 3.16:
2014-06-04 10:02:38 -07:00
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
mcb: Add support for shared PCI IRQs
2014-05-27 17:38:11 -07:00
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
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
sound updates for 3.16-rc1
2014-06-04 09:08:25 -07:00
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
Updates for mmci driver:
2014-06-02 09:22:24 -07:00
Merge branch 'for-3.16/core' of git://git.kernel.dk/linux-block into next
2014-06-02 09:29:34 -07:00
ACPI and power management updates for 3.16-rc1
2014-06-04 08:57:16 -07:00
DeviceTree for 3.16:
2014-06-04 10:02:38 -07:00
parport: Add support for the WCH353 1S/1P multi-IO card
2014-05-28 12:30:48 -07:00
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
This is the bulk of pin control changes for the v3.16
2014-06-03 11:20:32 -07:00
ACPI and power management updates for 3.16-rc1
2014-06-04 08:57:16 -07:00
Merge branches 'pnp', 'powercap', 'pm-runtime' and 'pm-opp'
2014-06-03 23:13:00 +02:00
ACPI and power management updates for 3.16-rc1
2014-06-04 08:57:16 -07:00
regulator: Updates for v3.16
2014-06-03 11:44:48 -07:00
ARM: SoC driver changes
2014-06-02 16:35:49 -07:00
At over 200 commits, covering almost all supported architectures, this
2014-06-04 08:47:12 -07:00
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
Merge back earlier cpufreq material.
2014-06-03 15:03:27 +02:00
Merge remote-tracking branch 'spi/topic/workqueue' into spi-next
2014-06-02 17:08:43 +01:00
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
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
DeviceTree for 3.16:
2014-06-04 10:02:38 -07:00
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
fbdev changes for 3.16 (omap)
2014-06-04 09:07:08 -07:00
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
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
Char / misc driver patches for 3.16-rc1
2014-06-03 08:06:56 -07:00
38515c7339