From: YueHaibing <yuehaibing@huawei.com> mainline inclusion from mainline-5.5-rc1 commit 364b05fd06e87e53dc03396f73afeac48d8e0998 category: feature bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=27 CVE: NA --------------------------- The callback function of call_rcu() just calls kfree(), so we can use kfree_rcu() instead of call_rcu() + callback function. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: yangerkun <yangerkun@huawei.com> Reviewed-by: zhangyi (F) <yi.zhang@huawei.com> Signed-off-by: Cheng Jian <cj.chengjian@huawei.com> --- fs/io-wq.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/fs/io-wq.c b/fs/io-wq.c index 4fab4917938e..7f94fab46c22 100644 --- a/fs/io-wq.c +++ b/fs/io-wq.c @@ -103,13 +103,6 @@ struct io_wq { struct completion done; }; -static void io_wq_free_worker(struct rcu_head *head) -{ - struct io_worker *worker = container_of(head, struct io_worker, rcu); - - kfree(worker); -} - static bool io_worker_get(struct io_worker *worker) { return refcount_inc_not_zero(&worker->ref); @@ -195,7 +188,7 @@ static void io_worker_exit(struct io_worker *worker) if (all_done && refcount_dec_and_test(&wqe->wq->refs)) complete(&wqe->wq->done); - call_rcu(&worker->rcu, io_wq_free_worker); + kfree_rcu(worker, rcu); } static void io_worker_start(struct io_wqe *wqe, struct io_worker *worker) -- 2.25.1