linux-kernel - Re: [PATCH] block: rbd: make rbd_bus

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Message-ID: <fccd3a15-b3a1-4ea2-ad0f-a6c0d3a8e134@ieee.org>
Date: Sun, 4 Feb 2024 15:06:25 -0600
From: Alex Elder <elder@...e.org>
To: "Ricardo B. Marliere" <ricardo@...liere.net>,
 Ilya Dryomov <idryomov@...il.com>,
 Dongsheng Yang <dongsheng.yang@...ystack.cn>, Jens Axboe <axboe@...nel.dk>
Cc: ceph-devel@...r.kernel.org, linux-block@...r.kernel.org,
 linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] block: rbd: make rbd_bus_type const

On 2/4/24 9:31 AM, Ricardo B. Marliere wrote:
> Now that the driver core can properly handle constant struct bus_type,
> move the rbd_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>

Great!

Reviewed-by: Alex Elder <elder@...aro.org>

> ---
>   drivers/block/rbd.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
> index 0202a4e5d6cf..21f2b9e9b9ff 100644
> --- a/drivers/block/rbd.c
> +++ b/drivers/block/rbd.c
> @@ -575,7 +575,7 @@ static const struct attribute_group rbd_bus_group = {
>   };
>   __ATTRIBUTE_GROUPS(rbd_bus);
>   
> -static struct bus_type rbd_bus_type = {
> +static const struct bus_type rbd_bus_type = {
>   	.name		= "rbd",
>   	.bus_groups	= rbd_bus_groups,
>   };
> 
> ---
> base-commit: aa826a9b19b93bf8aabc462381ae436a60b2a320
> change-id: 20240204-bus_cleanup-block-9986bfea7975
> 
> Best regards,