Andrea Parri 6aab0ad9a4 bio: fix improper use of smp_mb__before_atomic() ...

commit f381c6a4bd upstream.

This barrier only applies to the read-modify-write operations; in
particular, it does not apply to the atomic_set() primitive.

Replace the barrier with an smp_mb().

Fixes: dac56212e8 ("bio: skip atomic inc/dec of ->bi_cnt for most use cases")
Cc: stable@vger.kernel.org
Reported-by: "Paul E. McKenney" <paulmck@linux.ibm.com>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: linux-block@vger.kernel.org
Cc: "Paul E. McKenney" <paulmck@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-05-31 06:48:11 -07:00

..

acpi

ACPICA: Reference Counts: increase max to 0x4000 for large servers

2019-03-19 13:14:07 +01:00

asm-generic

locking/qspinlock: Pull in asm/byteorder.h to ensure correct endianness

2019-01-26 09:38:36 +01:00

clocksource

clocksource/drivers/sp804: Convert init function to return error

2016-06-28 10:19:30 +02:00

crypto

crypto: vmac - separate tfm and request context

2018-08-17 20:59:29 +02:00

drm

drm: disable uncached DMA optimization for ARM and arm64

2019-03-13 14:05:01 -07:00

dt-bindings

dt-bindings: clock: mediatek: add binding for fixed-factor clock axisel_d4

2018-04-24 09:34:14 +02:00

keys

KEYS: user: Align the payload buffer

2019-02-27 10:07:00 +01:00

kvm

arm/arm64: KVM: Add PSCI version selection API

2018-05-09 09:50:19 +02:00

linux

bio: fix improper use of smp_mb__before_atomic()

2019-05-31 06:48:11 -07:00

math-emu

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media

media: v4l: event: Prevent freeing event subscriptions while accessed

2018-10-03 17:01:55 -07:00

memory

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misc

cxl: Add cxl_check_and_switch_mode() API to switch bi-modal cards

2016-07-14 20:28:11 +10:00

net

Bluetooth: Align minimum encryption key size for LE and BR/EDR connections

2019-05-10 17:52:10 +02:00

pcmcia

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ras

tracing, RAS: Cleanup on __get_str() usage

2016-07-15 15:51:16 -04:00

rdma

IB/core: Make testing MR flags for writability a static inline function

2018-08-15 18:14:43 +02:00

rxrpc

rxrpc: Add tracepoint for ACK proposal

2016-09-23 15:49:19 +01:00

scsi

scsi: sg: disable SET_FORCE_LOW_DMA

2018-01-23 19:57:04 +01:00

soc

memory: tegra: Apply interrupts mask per SoC

2018-08-03 07:55:24 +02:00

sound

ALSA: pcm: remove SNDRV_PCM_IOCTL1_INFO internal command

2019-05-16 19:43:44 +02:00

target

target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK

2018-01-17 09:38:54 +01:00

trace

ext4: force inode writes when nfsd calls commit_metadata()

2019-01-09 16:16:44 +01:00

uapi

x86/speculation: Add prctl() control for indirect branch speculation

2019-05-14 19:19:39 +02:00

video

udlfb: set optimal write delay

2018-09-09 20:01:25 +02:00

xen

swiotlb-xen: implement xen_swiotlb_dma_mmap callback

2017-10-05 09:44:05 +02:00

Kbuild

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