linux-kernel - [PATCH v10 6/9] nvme: Export existing nvme core functions

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Message-Id: <20200108174030.3430-7-logang@deltatee.com>
Date:   Wed,  8 Jan 2020 10:40:27 -0700
From:   Logan Gunthorpe <logang@...tatee.com>
To:     linux-kernel@...r.kernel.org, linux-nvme@...ts.infradead.org
Cc:     Christoph Hellwig <hch@....de>, Sagi Grimberg <sagi@...mberg.me>,
        Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...com>,
        Chaitanya Kulkarni <Chaitanya.Kulkarni@....com>,
        Max Gurtovoy <maxg@...lanox.com>,
        Stephen Bates <sbates@...thlin.com>,
        Logan Gunthorpe <logang@...tatee.com>,
        Chaitanya Kulkarni <chaitanya.kulkarni@....com>
Subject: [PATCH v10 6/9] nvme: Export existing nvme core functions

Export nvme_put_ns(), nvme_command_effects(), nvme_execute_passthru_rq()
and nvme_find_get_ns() for use in the nvmet passthru code.

The exports are conditional on CONFIG_NVME_TARGET_PASSTHRU.

Based-on-a-patch-by: Chaitanya Kulkarni <chaitanya.kulkarni@....com>
Signed-off-by: Logan Gunthorpe <logang@...tatee.com>
---
 drivers/nvme/host/core.c | 14 +++++++++-----
 drivers/nvme/host/nvme.h |  5 +++++
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index d7912e7a9911..037415882d46 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -463,7 +463,7 @@ static void nvme_free_ns(struct kref *kref)
 	kfree(ns);
 }
 
-static void nvme_put_ns(struct nvme_ns *ns)
+void nvme_put_ns(struct nvme_ns *ns)
 {
 	kref_put(&ns->kref, nvme_free_ns);
 }
@@ -896,8 +896,8 @@ static void *nvme_add_user_metadata(struct bio *bio, void __user *ubuf,
 	return ERR_PTR(ret);
 }
 
-static u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
-				u8 opcode)
+u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
+			 u8 opcode)
 {
 	u32 effects = 0;
 
@@ -982,7 +982,7 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
 		nvme_queue_scan(ctrl);
 }
 
-static void nvme_execute_passthru_rq(struct request *rq)
+void nvme_execute_passthru_rq(struct request *rq)
 {
 	struct nvme_command *cmd = nvme_req(rq)->cmd;
 	struct nvme_ctrl *ctrl = nvme_req(rq)->ctrl;
@@ -3441,7 +3441,7 @@ static int ns_cmp(void *priv, struct list_head *a, struct list_head *b)
 	return nsa->head->ns_id - nsb->head->ns_id;
 }
 
-static struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
+struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 {
 	struct nvme_ns *ns, *ret = NULL;
 
@@ -4225,6 +4225,10 @@ EXPORT_SYMBOL_GPL(nvme_sync_queues);
  * use by the nvmet-passthru and should not be used for
  * other things.
  */
+EXPORT_SYMBOL_GPL(nvme_put_ns);
+EXPORT_SYMBOL_GPL(nvme_command_effects);
+EXPORT_SYMBOL_GPL(nvme_execute_passthru_rq);
+EXPORT_SYMBOL_GPL(nvme_find_get_ns);
 
 struct nvme_ctrl *nvme_ctrl_get_by_path(const char *path)
 {
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 356e4062796e..b1b1e7dd866b 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -687,6 +687,11 @@ static inline void nvme_hwmon_init(struct nvme_ctrl *ctrl) { }
  * use by the nvmet-passthru and should not be used for
  * other things.
  */
+void nvme_put_ns(struct nvme_ns *ns);
+u32 nvme_command_effects(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
+			 u8 opcode);
+void nvme_execute_passthru_rq(struct request *rq);
+struct nvme_ns *nvme_find_get_ns(struct nvme_ctrl *ctrl, unsigned int nsid);
 struct nvme_ctrl *nvme_ctrl_get_by_path(const char *path);
 #endif /* CONFIG_NVME_TARGET_PASSTHRU */
 
-- 
2.20.1