linux-kernel - [PATCH] mm: cma: make kobj

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Message-Id: <20230220-kobj_type-mm-cma-v1-1-45996cff1a81@weissschuh.net>
Date:   Mon, 20 Feb 2023 23:23:31 +0000
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH] mm: cma: make kobj_type structure constant

Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.

Take advantage of this to constify the structure definition to prevent
modification at runtime.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 mm/cma_sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/cma_sysfs.c b/mm/cma_sysfs.c
index eb2f39caff59..56347d15b7e8 100644
--- a/mm/cma_sysfs.c
+++ b/mm/cma_sysfs.c
@@ -64,7 +64,7 @@ static struct attribute *cma_attrs[] = {
 };
 ATTRIBUTE_GROUPS(cma);
 
-static struct kobj_type cma_ktype = {
+static const struct kobj_type cma_ktype = {
 	.release = cma_kobj_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 	.default_groups = cma_groups,

---
base-commit: 5b0ed5964928b0aaf0d644c17c886c7f5ea4bb3f
change-id: 20230220-kobj_type-mm-cma-65e1a02569db

Best regards,
-- 
Thomas Weißschuh <linux@...ssschuh.net>