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Code Issues Releases Packages Activity
linux/block/blk-cgroup.h
Hong Zhiguo 2c575026fa Update of blkg_stat and blkg_rwstat may happen in bh context. 
While u64_stats_fetch_retry is only preempt_disable on 32bit
UP system. This is not enough to avoid preemption by bh and
may read strange 64 bit value.

Signed-off-by: Hong Zhiguo <zhiguohong@tencent.com>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2013-11-20 15:33:04 -07:00

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