Minchan Kim
2e32baea46
zram: revalidate disk after capacity change ...
Alexander reported mkswap on /dev/zram0 is failed if other process is
opening the block device file.
Step is as follows,
0. Reset the unused zram device.
1. Use a program that opens /dev/zram0 with O_RDWR and sleeps
until killed.
2. While that program sleeps, echo the correct value to
/sys/block/zram0/disksize.
3. Verify (e.g. in /proc/partitions) that the disk size is applied
correctly. It is.
4. While that program still sleeps, attempt to mkswap /dev/zram0.
This fails: mkswap: error: swap area needs to be at least 40 KiB
When I investigated, the size get by ioctl(fd, BLKGETSIZE64, xxx) on
mkswap to get a size of blockdev was zero although zram0 has right size by
2.
The reason is zram didn't revalidate disk after changing capacity so that
size of blockdev's inode is not uptodate until all of file is close.
This patch should fix the BUG.
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: Alexander E. Patrakov <patrakov@gmail.com>
Tested-by: Alexander E. Patrakov <patrakov@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-03 09:21:53 -07:00
Merge branches 'acpi-general', 'acpi-processor', 'acpi-lpss' and 'acpi-battery'
2014-06-19 14:40:48 +02:00
Merge branch 'for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2014-06-09 14:58:36 -07:00
DMA, CMA: fix possible memory leak
2014-06-23 16:47:44 -07:00
zram: revalidate disk after capacity change
2014-07-03 09:21:53 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-06-12 14:27:40 -07:00
bus/arm-cci: add dependency on OF && CPU_V7
2014-06-17 17:09:35 +02:00
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
2014-06-11 08:41:17 -07:00
random: fix entropy accounting bug introduced in v3.15
2014-06-17 14:23:14 -10:00
This pull request contains the second half the of the clk changes for
2014-06-15 16:02:20 -10:00
clocksource: exynos_mct: Don't reset the counter during boot and resume
2014-06-17 00:23:29 +09:00
cpufreq: unlock when failing cpufreq_update_policy()
2014-06-18 21:52:20 +02:00
cpuidle: mvebu: Fix the name of the states
2014-06-18 21:54:46 +02:00
crypto/nx: disable NX on little endian builds
2014-06-11 17:03:19 +10:00
Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma
2014-06-10 10:28:45 -07:00
sound updates for 3.16-rc1
2014-06-04 09:08:25 -07:00
efi-pstore: Fix an overflow on 32-bit builds
2014-06-27 07:30:32 +01:00
gpio: of: Fix handling for deferred probe for -gpio suffix
2014-06-12 09:57:00 +02:00
Merge tag 'drm-intel-fixes-2014-06-26' of git://anongit.freedesktop.org/drm-intel into drm-fixes
2014-06-27 15:04:06 +10:00
Most of this is cleaning up various driver sysfs permissions so we can
2014-06-11 16:09:14 -07:00
hsi: omap_ssi_port: use normal module refcounting
2014-06-05 00:59:05 +02:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-06-12 14:27:40 -07:00
hwmon: (gpio-fan) Change name used in hwmon_device_register_with_groups
2014-06-25 15:16:09 -07:00
i2c: sun6-p2wi: fix call to snprintf
2014-06-17 14:28:04 +02:00
First set of IIO fixes for the 3.16 cycle.
2014-06-18 10:41:08 -07:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
2014-06-12 22:38:32 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2014-06-09 18:46:02 -07:00
iommu/amd: Fix small race between invalidate_range_end/start
2014-06-20 16:14:22 +02:00
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
2014-06-04 15:59:13 -07:00
isdn: hisax: Drop duplicate Kconfig entry
2014-06-16 21:31:37 -07:00
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds
2014-06-12 13:08:09 -07:00
powerpc/macintosh/smu.c: Fix closing brace followed by if
2014-06-24 12:43:15 +10:00
. Add dm_accept_partial_bio interface to DM core to allow DM targets
2014-06-12 13:33:29 -07:00
Merge branch 'topic/omap3isp' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
2014-06-12 23:04:28 -07:00
drivers/memstick/host/rtsx_pci_ms.c: add cancel_work when remove driver
2014-06-23 16:47:44 -07:00
mfd: ab8500: Fix dt irq mapping
2014-06-26 13:34:15 +01:00
ARM: SoC fixes for 3.16
2014-06-25 12:19:01 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-06-12 14:27:40 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-06-12 10:30:18 -07:00
net: allwinner: emac: Add missing free_irq
2014-06-25 16:31:17 -07:00
kernel/printk: use symbolic defines for console loglevels
2014-06-04 16:54:17 -07:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-06-25 21:08:24 -07:00
parport: convert use of typedef ctl_table to struct ctl_table
2014-06-06 16:08:15 -07:00
PCI changes for the v3.16 merge window (part 2):
2014-06-12 13:20:24 -07:00
This is the bulk of pin control changes for the v3.16
2014-06-03 11:20:32 -07:00
Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
2014-06-10 16:58:32 -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
ptp: ptp_pch depends on x86_32
2014-06-17 15:43:48 -07:00
pwm: Changes for v3.16-rc1
2014-06-11 14:06:55 -07:00
rapidio/tsi721: use pci_enable_msix_exact() instead of pci_enable_msix()
2014-06-06 16:08:13 -07:00
Merge remote-tracking branches 'regulator/fix/bcm590xx', 'regulator/fix/palmas' and 'regulator/fix/tps65218' into regulator-linus
2014-06-28 14:01:04 +01:00
remoteproc: da8xx: don't select CMA on no-MMU
2014-06-17 17:09:36 +02:00
drivers/rtc/rtc-puv3.c: remove "&dev->" for typo issue MIME-Version: 1.0
2014-06-20 08:22:39 +08:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2014-06-21 06:47:01 -10:00
drivers: scsi: mvsas: fix compiling issue by adding 'MVS_' for "enum pci_interrupt_cause"
2014-06-20 08:22:39 +08:00
SH Driver Update for v3.16
2014-06-06 11:44:09 -07:00
Merge remote-tracking branches 'spi/fix/pxa2xx', 'spi/fix/qup' and 'spi/fix/sh-sci' into spi-linus
2014-06-28 14:01:23 +01:00
imx-drm: parallel-display: Fix DPMS default state.
2014-06-19 17:33:37 -07:00
iscsi-target: fix iscsit_del_np deadlock on unload
2014-06-27 23:23:35 -07:00
TC: Handle device_register() errors.
2014-06-26 10:48:23 +01:00
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
2014-06-11 14:26:21 -07:00
ARM: SoC fixes for 3.16
2014-06-25 12:19:01 -07:00
Revert "uio: fix vma io range check in mmap"
2014-06-17 16:07:08 -07:00
USB: usbtest: add a timeout for scatter-gather tests
2014-06-17 17:05:50 -07:00
A handful of VFIO bug fixes for v3.16
2014-06-07 20:12:15 -07:00
vhost-scsi: don't open-code kvfree
2014-06-23 09:22:48 +03:00
fb: adv7393: add missing semicolon
2014-07-01 13:18:38 +03:00
w1: mxc_w1: Fix incorrect "presence" status
2014-06-19 17:51:46 -07:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2014-06-21 06:47:01 -10:00
xen: regression and PVH fixes for 3.16-rc1
2014-06-19 07:53:27 -10:00
2e32baea46