[v9,03/12] nvmet: add return value to nvmet_add_async_event()
diff mbox series

Message ID 20191009192530.13079-4-logang@deltatee.com
State New
Headers show
Series
  • nvmet: add target passthru commands support
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Commit Message

Logan Gunthorpe Oct. 9, 2019, 7:25 p.m. UTC
From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>

Change the return value for nvmet_add_async_event().

This change is needed for the target passthru code which will
submit async events on namespaces changes and can fail the command
should adding the event fail (on -ENOMEM).

Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
[logang@deltatee.com:
 * fleshed out commit message
 * change to using int as a return type instead of bool
]
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
---
 drivers/nvme/target/core.c  | 6 ++++--
 drivers/nvme/target/nvmet.h | 2 +-
 2 files changed, 5 insertions(+), 3 deletions(-)

Comments

Keith Busch Oct. 9, 2019, 10:17 p.m. UTC | #1
On Wed, Oct 09, 2019 at 01:25:20PM -0600, Logan Gunthorpe wrote:
> From: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
> 
> Change the return value for nvmet_add_async_event().
> 
> This change is needed for the target passthru code which will
> submit async events on namespaces changes and can fail the command
> should adding the event fail (on -ENOMEM).
> 
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
> [logang@deltatee.com:
>  * fleshed out commit message
>  * change to using int as a return type instead of bool
> ]
> Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
> Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
> ---

Looks fine, but let's remove the version comments out of commit log if
we're applying this one.

Reviewed-by: Keith Busch <kbusch@kernel.org>

>  drivers/nvme/target/core.c  | 6 ++++--
>  drivers/nvme/target/nvmet.h | 2 +-
>  2 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
> index 3a67e244e568..d6dcb86d8be7 100644
> --- a/drivers/nvme/target/core.c
> +++ b/drivers/nvme/target/core.c
> @@ -173,14 +173,14 @@ static void nvmet_async_event_work(struct work_struct *work)
>  	}
>  }
>  
> -void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
> +int nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
>  		u8 event_info, u8 log_page)
>  {
>  	struct nvmet_async_event *aen;
>  
>  	aen = kmalloc(sizeof(*aen), GFP_KERNEL);
>  	if (!aen)
> -		return;
> +		return -ENOMEM;
>  
>  	aen->event_type = event_type;
>  	aen->event_info = event_info;
> @@ -191,6 +191,8 @@ void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
>  	mutex_unlock(&ctrl->lock);
>  
>  	schedule_work(&ctrl->async_event_work);
> +
> +	return 0;
>  }
>  
>  static void nvmet_add_to_changed_ns_log(struct nvmet_ctrl *ctrl, __le32 nsid)
> diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
> index c51f8dd01dc4..3d313a6452cc 100644
> --- a/drivers/nvme/target/nvmet.h
> +++ b/drivers/nvme/target/nvmet.h
> @@ -441,7 +441,7 @@ void nvmet_port_disc_changed(struct nvmet_port *port,
>  		struct nvmet_subsys *subsys);
>  void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys,
>  		struct nvmet_host *host);
> -void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
> +int nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
>  		u8 event_info, u8 log_page);
>  
>  #define NVMET_QUEUE_SIZE	1024
> -- 
> 2.20.1
>

Patch
diff mbox series

diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index 3a67e244e568..d6dcb86d8be7 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -173,14 +173,14 @@  static void nvmet_async_event_work(struct work_struct *work)
 	}
 }
 
-void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
+int nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
 		u8 event_info, u8 log_page)
 {
 	struct nvmet_async_event *aen;
 
 	aen = kmalloc(sizeof(*aen), GFP_KERNEL);
 	if (!aen)
-		return;
+		return -ENOMEM;
 
 	aen->event_type = event_type;
 	aen->event_info = event_info;
@@ -191,6 +191,8 @@  void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
 	mutex_unlock(&ctrl->lock);
 
 	schedule_work(&ctrl->async_event_work);
+
+	return 0;
 }
 
 static void nvmet_add_to_changed_ns_log(struct nvmet_ctrl *ctrl, __le32 nsid)
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index c51f8dd01dc4..3d313a6452cc 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -441,7 +441,7 @@  void nvmet_port_disc_changed(struct nvmet_port *port,
 		struct nvmet_subsys *subsys);
 void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys,
 		struct nvmet_host *host);
-void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
+int nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
 		u8 event_info, u8 log_page);
 
 #define NVMET_QUEUE_SIZE	1024