iommu: avoid taking iova_rbtree_lock twice

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Both find_iova() and __free_iova() take iova_rbtree_lock,
there is no reason to take and release it twice inside
free_iova().

Fold them into one critical section by calling the unlock
versions instead.

Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/1605608734-84416-5-git-send-email-john.garry@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

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Cong Wang 2020-11-17 18:25:34 +08:00 • committed by Will Deacon

parent 6fa3525b45

commit 3a651b3a27

1 changed files with 6 additions and 2 deletions

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drivers/iommu/iova.c

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