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blk-throttle: Take blkcg->lock while traversing blkcg->policy_list
authorVivek Goyal <vgoyal@redhat.com>
Tue, 25 Oct 2011 13:48:12 +0000 (15:48 +0200)
committerJens Axboe <axboe@kernel.dk>
Tue, 25 Oct 2011 13:48:12 +0000 (15:48 +0200)
commita38eb630fa224d6fba8c14a4063174bc5e0f63bb
treeb86cb5b0aaa4b6d45d798b5155ed2089177f8206tree | snapshot
parente060f00beee23568fe2c4faf1e88ff22edefd7b2commit | diff
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>
block/blk-cgroup.c diff | blob | blame | history
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