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From: "Javier González" <jg@lightnvm.io>
To: mb@lightnvm.io
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
	"Javier González" <javier@cnexlabs.com>
Subject: [PATCH 1/2] lightnvm: create cmd before allocating request
Date: Wed,  3 May 2017 11:19:04 +0200	[thread overview]
Message-ID: <1493803145-18082-1-git-send-email-javier@cnexlabs.com> (raw)

Create nvme command before allocating a request using
nvme_alloc_request, which uses the command direction. Up until now, the
command has been zeroized, so all commands have been allocated as a
read operation.

Signed-off-by: Javier González <javier@cnexlabs.com>
---
 drivers/nvme/host/lightnvm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/lightnvm.c b/drivers/nvme/host/lightnvm.c
index de61a4a03d78..090bbeb655bc 100644
--- a/drivers/nvme/host/lightnvm.c
+++ b/drivers/nvme/host/lightnvm.c
@@ -503,6 +503,8 @@ static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
 	if (!cmd)
 		return -ENOMEM;
 
+	nvme_nvm_rqtocmd(rq, rqd, ns, cmd);
+
 	rq = nvme_alloc_request(q, (struct nvme_command *)cmd, 0, NVME_QID_ANY);
 	if (IS_ERR(rq)) {
 		kfree(cmd);
@@ -517,8 +519,6 @@ static int nvme_nvm_submit_io(struct nvm_dev *dev, struct nvm_rq *rqd)
 		rq->__data_len = 0;
 	}
 
-	nvme_nvm_rqtocmd(rq, rqd, ns, cmd);
-
 	rq->end_io_data = rqd;
 
 	blk_execute_rq_nowait(q, NULL, rq, 0, nvme_nvm_end_io);
-- 
2.7.4

             reply	other threads:[~2017-05-03  9:19 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-03  9:19 Javier González [this message]
2017-05-03  9:19 ` [PATCH 2/2] lightnvm: fix bad back free on error path Javier González
2017-05-04  8:04   ` Matias Bjørling
2017-05-04 11:27   ` Christoph Hellwig
2017-05-04  8:04 ` [PATCH 1/2] lightnvm: create cmd before allocating request Matias Bjørling
2017-05-04 11:27 ` Christoph Hellwig
2017-05-04 13:53 ` Jens Axboe
2017-05-04 13:55   ` Javier González

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