Unverified Commit 740bb65d authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!12363 md: use RCU lock to protect traversal in md_spares_need_change() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Li Lingfeng <lilingfeng3@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/HRWFX2WMMINLMVMM4W3CZIOLGYSJTP32/ 
 
https://gitee.com/openeuler/kernel/issues/IAZESX 
 
Link:https://gitee.com/openeuler/kernel/pulls/12363
parents f34aecb9 bd831c2b

drivers/md/md.c

+7 −2
Original line number Diff line number Diff line
@@ -9277,9 +9277,14 @@ static bool md_spares_need_change(struct mddev *mddev) 
{

	struct md_rdev *rdev;



	rdev_for_each(rdev, mddev)

		if (rdev_removeable(rdev) || rdev_addable(rdev))

	rcu_read_lock();

	rdev_for_each_rcu(rdev, mddev) {

		if (rdev_removeable(rdev) || rdev_addable(rdev)) {

			rcu_read_unlock();

			return true;

		}

	}

	rcu_read_unlock();

	return false;

}