dm thin: use bool rather than unsigned for flags in structures

Also, move 'err' member in dm_thin_new_mapping structure to eliminate 4
byte hole (reduces size from 88 bytes to 80).

Signed-off-by: M

dm thin: use bool rather than unsigned for flags in structures

Also, move 'err' member in dm_thin_new_mapping structure to eliminate 4
byte hole (reduces size from 88 bytes to 80).

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>

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dm thin: fix discard support to a previously shared block

If a snapshot is created and later deleted the origin dm_thin_device's
snapshotted_time will have been updated to reflect the snapshot's
cre

dm thin: fix discard support to a previously shared block

If a snapshot is created and later deleted the origin dm_thin_device's
snapshotted_time will have been updated to reflect the snapshot's
creation time. The 'shared' flag in the dm_thin_lookup_result struct
returned from dm_thin_find_block() is an approximation based on
snapshotted_time -- this is done to avoid 0(n), or worse, time
complexity. In this case, the shared flag would be true.

But because the 'shared' flag reflects an approximation a block can be
incorrectly assumed to be shared (e.g. false positive for 'shared'
because the snapshot no longer exists). This could result in discards
issued to a thin device not being passed down to the pool's underlying
data device.

To fix this we double check that a thin block is really still in-use
after a mapping is removed using dm_pool_block_is_used(). If the
reference count for a block is now zero the discard is allowed to be
passed down.

Also add a 'definitely_not_shared' member to the dm_thin_new_mapping
structure -- reflects that the 'shared' flag in the response from
dm_thin_find_block() can only be held as definitive if false is
returned.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1043527

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org

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Merge to v3.13-rc7 for prerequisite changes in the Xen code for TPM

Merge tag 'v3.13-rc7' into x86/efi-kexec to resolve conflicts

Conflicts:
arch/x86/platform/efi/efi.c
drivers/firmware/efi/Kconfig

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge branch 'for-linus' into for-next

Merge tag 'davinci-for-v3.14/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers

From Sekhar Nori:
DaVinci GPIO driver updates
---------------------------

Merge tag 'davinci-for-v3.14/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into next/drivers

From Sekhar Nori:
DaVinci GPIO driver updates
---------------------------

This pull request contains updates to DaVinci GPIO driver and the
resultant platform code changes. The updates include DT-conversion and
changes to make the driver cross-platform ready.

* tag 'davinci-for-v3.14/gpio' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
gpio: davinci: don't create irq_domain in case of unbanked irqs
gpio: davinci: use chained_irq_enter/chained_irq_exit API
gpio: davinci: add OF support
gpio: davinci: remove unused variable intc_irq_num
gpio: davinci: convert to use irqdomain support.
gpio: introduce GPIO_DAVINCI kconfig option
gpio: davinci: get rid of DAVINCI_N_GPIO
gpio: davinci: use {readl|writel}_relaxed() instead of __raw_*

Signed-off-by: Olof Johansson <olof@lixom.net>

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Merge tag 'v3.13-rc6' into for-3.14/core

Needed to bring blk-mq uptodate, since changes have been going in
since for-3.14/core was established.

Fixup merge issues related to the immutable biovec ch

Merge tag 'v3.13-rc6' into for-3.14/core

Needed to bring blk-mq uptodate, since changes have been going in
since for-3.14/core was established.

Fixup merge issues related to the immutable biovec changes.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

Conflicts:
block/blk-flush.c
fs/btrfs/check-integrity.c
fs/btrfs/extent_io.c
fs/btrfs/scrub.c
fs/logfs/dev_bdev.c

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Merge tag 'v3.13-rc6' into spi-dw

To resolve trivial overlaps with fixes.

Linux 3.13-rc6

Merge tag 'v3.13-rc6' into spi-rcar

To resolve spurious merge conflicts with fixes.

Linux 3.13-rc6

Merge tag 'v3.13-rc4' into regmap-core

Needed as a subsequent patch is built on some of the fixes.

Linux 3.13-rc4

Merge back earlier 'pm-sleep' material.

Merge tag 'v3.13-rc5' into next/boards

Need a newer base version to get a regulator fix for Samsung platforms that
they enable building in a defconfig.

Linux 3.13-rc5

Merge tag 'v3.13-rc4' into next/cleanup

Linux 3.13-rc4

Merge 3.13-rc5 into staging-next

We want these fixes here to handle some merge issues.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge branch 'efm32/soc' into next/soc

From Uwe Kleine-König:
* efm32/soc: (1003 commits)
ARM: device trees for Energy Micro's EFM32 Cortex-M3 SoCs
ARM: new platform for Energy Micro's EFM32 Cor

Merge branch 'efm32/soc' into next/soc

From Uwe Kleine-König:
* efm32/soc: (1003 commits)
ARM: device trees for Energy Micro's EFM32 Cortex-M3 SoCs
ARM: new platform for Energy Micro's EFM32 Cortex-M3 SoCs
+Linux 3.13-rc4

Signed-off-by: Kevin Hilman <khilman@linaro.org>

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Merge tag 'omap-for-v3.13/display-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

I accidentally removed some mux code for omap4 that I thought was
dead code as om

Merge tag 'omap-for-v3.13/display-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

I accidentally removed some mux code for omap4 that I thought was
dead code as omap4 has been booting with device tree only since
v3.10. Turns out I also removed some display related mux code,
so let's revert that except for the dead code parts.

* tag 'omap-for-v3.13/display-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (439 commits)
Revert "ARM: OMAP2+: Remove legacy mux code for display.c"
+Linux 3.13-rc4

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Merge tag 'v3.13-rc4' into next

Linux 3.13-rc4

* tag 'v3.13-rc4': (1001 commits)
Linux 3.13-rc4
null_blk: mem garbage on NUMA systems during init
radeon_pm: fix oops in hwmon_attributes_visib

Merge tag 'v3.13-rc4' into next

Linux 3.13-rc4

* tag 'v3.13-rc4': (1001 commits)
Linux 3.13-rc4
null_blk: mem garbage on NUMA systems during init
radeon_pm: fix oops in hwmon_attributes_visible() and radeon_hwmon_show_temp_thresh()
Revert "selinux: consider filesystem subtype in policies"
igb: Fix for issue where values could be too high for udelay function.
i40e: fix null dereference
ARM: fix asm/memory.h build error
dm array: fix a reference counting bug in shadow_ablock
dm space map: disallow decrementing a reference count below zero
mm: memcg: do not allow task about to OOM kill to bypass the limit
mm: memcg: fix race condition between memcg teardown and swapin
thp: move preallocated PTE page table on move_huge_pmd()
mfd/rtc: s5m: fix register updating by adding regmap for RTC
rtc: s5m: enable IRQ wake during suspend
rtc: s5m: limit endless loop waiting for register update
rtc: s5m: fix unsuccesful IRQ request during probe
drivers/rtc/rtc-s5m.c: fix info->rtc assignment
include/linux/kernel.h: make might_fault() a nop for !MMU
drivers/rtc/rtc-at91rm9200.c: correct alarm over day/month wrap
procfs: also fix proc_reg_get_unmapped_area() for !MMU case
...

Signed-off-by: Felipe Balbi <balbi@ti.com>

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Merge branch 'master' into for-next

Sync with Linus' tree to be able to apply fixes on top of newer things
in tree (efi-stub).

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Merge tag 'v3.13-rc4' into x86/mm

Pick up the latest fixes before applying new patches.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'asoc-v3.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v3.13

The fixes here are all driver specific ones, none of which particularl

Merge tag 'asoc-v3.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v3.13

The fixes here are all driver specific ones, none of which particularly
stand out but all of which are useful to users of those drivers.

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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Conflicts:
drivers/net/ethernet/intel/i40e/i40e_main.c
drivers/net/macvtap.c

Both minor merge hassles, simple overlapping changes.

S

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Conflicts:
drivers/net/ethernet/intel/i40e/i40e_main.c
drivers/net/macvtap.c

Both minor merge hassles, simple overlapping changes.

Signed-off-by: David S. Miller <davem@davemloft.net>

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Merge tag 's2mps11-build' into regulator-s5m8767 since a following patch
depend on it.

regulator/clk: Fix s2mps11 build

This patch fixes a build failure that appeared in v3.13-rc4 due to an
RTC/MFD

Merge tag 's2mps11-build' into regulator-s5m8767 since a following patch
depend on it.

regulator/clk: Fix s2mps11 build

This patch fixes a build failure that appeared in v3.13-rc4 due to an
RTC/MFD update merged via -mm.

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Merge tag 'v3.13-rc4' into core/locking

Merge Linux 3.13-rc4, to refresh this rather old tree with the latest fixes.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge 3.13-rc4 into staging-next.

We want the fixes in here as well.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge 3.13-rc4 into tty-next

We want the fixes in here as well.