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

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Message-Id: <20240204-bus_cleanup-block-v1-1-fc77afd8d7cc@marliere.net>
Date: Sun, 04 Feb 2024 12:31:42 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: 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>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH] block: rbd: make rbd_bus_type const

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>
---
 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,
-- 
Ricardo B. Marliere <ricardo@...liere.net>