From: Sagi Grimberg <sagi@grimberg.me>
To: Christoph Hellwig <hch@lst.de>, Keith Busch <kbusch@kernel.org>,
linux-nvme@lists.infradead.org
Subject: [PATCH 1/3] nvme-tcp: use bh_lock in data_ready
Date: Thu, 30 Apr 2020 13:59:32 -0700 [thread overview]
Message-ID: <20200430205932.30968-1-sagi@grimberg.me> (raw)
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>
---
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)
--
2.20.1
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next reply other threads:[~2020-04-30 20:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 20:59 Sagi Grimberg [this message]
2020-05-06 6:57 ` [PATCH 1/3] nvme-tcp: use bh_lock in data_ready Christoph Hellwig
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