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

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Date:   Mon, 20 Feb 2023 23:25:28 +0000
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Christoph Lameter <cl@...ux.com>,
        Pekka Enberg <penberg@...nel.org>,
        David Rientjes <rientjes@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Roman Gushchin <roman.gushchin@...ux.dev>,
        Hyeonggon Yoo <42.hyeyoo@...il.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH] mm: slub: 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/slub.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/slub.c b/mm/slub.c
index 13459c69095a..be710dc4dc3e 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -6058,7 +6058,7 @@ static const struct sysfs_ops slab_sysfs_ops = {
 	.store = slab_attr_store,
 };
 
-static struct kobj_type slab_ktype = {
+static const struct kobj_type slab_ktype = {
 	.sysfs_ops = &slab_sysfs_ops,
 	.release = kmem_cache_release,
 };

---
base-commit: 5b0ed5964928b0aaf0d644c17c886c7f5ea4bb3f
change-id: 20230220-kobj_type-mm-slub-02d25836de84

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