linux-kernel - Re: [PATCH] device-dax: make dax_bus

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Date: Mon, 5 Feb 2024 15:32:09 -0700
From: Dave Jiang <dave.jiang@...el.com>
To: "Ricardo B. Marliere" <ricardo@...liere.net>,
 Dan Williams <dan.j.williams@...el.com>,
 Vishal Verma <vishal.l.verma@...el.com>
Cc: nvdimm@...ts.linux.dev, linux-cxl@...r.kernel.org,
 linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] device-dax: make dax_bus_type const



On 2/4/24 9:07 AM, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the dax_bus_type variable to be a constant structure as well,
> placing it into read-only memory which can not be modified at runtime.
> 
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>

Reviewed-by: Dave Jiang <dave.jiang@...el.com>
> ---
>  drivers/dax/bus.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
> index 1659b787b65f..fe0a415c854d 100644
> --- a/drivers/dax/bus.c
> +++ b/drivers/dax/bus.c
> @@ -222,7 +222,7 @@ static void dax_bus_remove(struct device *dev)
>  		dax_drv->remove(dev_dax);
>  }
>  
> -static struct bus_type dax_bus_type = {
> +static const struct bus_type dax_bus_type = {
>  	.name = "dax",
>  	.uevent = dax_bus_uevent,
>  	.match = dax_bus_match,
> 
> ---
> base-commit: 73bf93edeeea866b0b6efbc8d2595bdaaba7f1a5
> change-id: 20240204-bus_cleanup-dax-52c34f72615f
> 
> Best regards,