linux-kernel - [PATCH 1/2] added stream id write support

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Message-id: <1429580863-3451-2-git-send-email-kwan.huen@samsung.com>
Date:	Mon, 20 Apr 2015 18:47:42 -0700
From:	"kwan.huen" <kwan.huen@...sung.com>
To:	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	Keith Busch <keith.busch@...el.com>, Jens Axboe <axboe@...com>,
	kwan.huen@...sung.com,
	Dimitri John Ledkov <dimitri.ledkov@...onical.com>
Cc:	linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org
Subject: [PATCH 1/2] added stream id write support

---
 drivers/block/nvme-core.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 85b8036..332341a 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -769,6 +769,9 @@ static int nvme_submit_iod(struct nvme_queue *nvmeq, struct nvme_iod *iod,
 	if (req->cmd_flags & REQ_RAHEAD)
 		dsmgmt |= NVME_RW_DSM_FREQ_PREFETCH;
 
+	if (rq_data_dir(req))
+		dsmgmt |= bio_get_streamid(req->bio) << 8;
+
 	cmnd = &nvmeq->sq_cmds[nvmeq->sq_tail];
 	memset(cmnd, 0, sizeof(*cmnd));
 
-- 
1.9.1

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