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@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Link: https://lore.kernel.org/r/20240204-bus_cleanup-block-v1-1-fc77afd8d7cc@marliere.net
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 12b5d53ec85645fb22395d41adef81d13cdb7292..00ca8a1d8c46fff787295b2d0097fd101450cd3a 100644 (file)
--- 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,
 };