| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.7 172/376] nvme-tcp: use bh_lock in data_ready | Date | Fri, 19 Jun 2020 16:31:30 +0200 |
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From: Sagi Grimberg <sagi@grimberg.me>
[ Upstream commit 386e5e6e1aa90b479fcf0467935922df8524393d ]
data_ready may be invoked from send context or from softirq, so need bh locking for that.
Fixes: 3f2304f8c6d6 ("nvme-tcp: add NVMe over TCP host driver") Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/nvme/host/tcp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index c15a92163c1f..4862fa962011 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -794,11 +794,11 @@ static void nvme_tcp_data_ready(struct sock *sk) { struct nvme_tcp_queue *queue; - read_lock(&sk->sk_callback_lock); + read_lock_bh(&sk->sk_callback_lock); queue = sk->sk_user_data; if (likely(queue && queue->rd_enabled)) queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work); - read_unlock(&sk->sk_callback_lock); + read_unlock_bh(&sk->sk_callback_lock); } static void nvme_tcp_write_space(struct sock *sk) -- 2.25.1
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