linux-kernel - [PATCH 5.4 032/111] nvme: add NVME_REQ_CANCELLED flag in nvme_cancel

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Message-Id: <20210329075616.247197475@linuxfoundation.org>
Date:   Mon, 29 Mar 2021 09:57:40 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Hannes Reinecke <hare@...e.de>,
        Keith Busch <kbusch@...nel.org>,
        Sagi Grimberg <sagi@...mberg.me>,
        Chao Leng <lengchao@...wei.com>,
        Daniel Wagner <dwagner@...e.de>,
        Christoph Hellwig <hch@....de>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 032/111] nvme: add NVME_REQ_CANCELLED flag in nvme_cancel_request()

From: Hannes Reinecke <hare@...e.de>

[ Upstream commit d3589381987ec879b03f8ce3039df57e87f05901 ]

NVME_REQ_CANCELLED is translated into -EINTR in nvme_submit_sync_cmd(),
so we should be setting this flags during nvme_cancel_request() to
ensure that the callers to nvme_submit_sync_cmd() will get the correct
error code when the controller is reset.

Signed-off-by: Hannes Reinecke <hare@...e.de>
Reviewed-by: Keith Busch <kbusch@...nel.org>
Reviewed-by: Sagi Grimberg <sagi@...mberg.me>
Reviewed-by: Chao Leng <lengchao@...wei.com>
Reviewed-by: Daniel Wagner <dwagner@...e.de>
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/nvme/host/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 308f3a28e12a..67ea531e8b34 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -312,6 +312,7 @@ bool nvme_cancel_request(struct request *req, void *data, bool reserved)
 		return true;
 
 	nvme_req(req)->status = NVME_SC_HOST_ABORTED_CMD;
+	nvme_req(req)->flags |= NVME_REQ_CANCELLED;
 	blk_mq_complete_request(req);
 	return true;
 }
-- 
2.30.1