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linux/block/blk-cgroup.c
Vivek Goyal a38eb630fa blk-throttle: Take blkcg->lock while traversing blkcg->policy_list 
blkcg->policy_list is protected by blkcg->lock. Its not rcu protected
list. So even for readers, they need to take blkcg->lock. There are
few functions which were reading the list without taking lock. Fix it.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-10-25 15:48:12 +02:00

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