Commit 9042e77a authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Vlastimil Babka (SUSE)
Browse files

mm/slab: constify sysfs attributes 



These attributes are never modified, make them read-only.

Signed-off-by: default avatarThomas Weißschuh <linux@weissschuh.net>
Reviewed-by: default avatarHarry Yoo <harry.yoo@oracle.com>
Link: https://patch.msgid.link/20260223-sysfs-const-slub-v1-2-ff86ffc26fff@weissschuh.net


Signed-off-by: default avatarVlastimil Babka (SUSE) <vbabka@kernel.org>
parent 5aa2a02b

mm/slub.c

+6 −6
Original line number Diff line number Diff line
@@ -8833,7 +8833,7 @@ static ssize_t show_slab_objects(struct kmem_cache *s, 
	return len;

}



#define to_slab_attr(n) container_of(n, struct slab_attribute, attr)

#define to_slab_attr(n) container_of_const(n, struct slab_attribute, attr)

#define to_slab(n) container_of(n, struct kmem_cache, kobj)



struct slab_attribute {
@@ -8843,10 +8843,10 @@ struct slab_attribute { 
};



#define SLAB_ATTR_RO(_name) \

	static struct slab_attribute _name##_attr = __ATTR_RO_MODE(_name, 0400)

	static const struct slab_attribute _name##_attr = __ATTR_RO_MODE(_name, 0400)



#define SLAB_ATTR(_name) \

	static struct slab_attribute _name##_attr = __ATTR_RW_MODE(_name, 0600)

	static const struct slab_attribute _name##_attr = __ATTR_RW_MODE(_name, 0600)



static ssize_t slab_size_show(struct kmem_cache *s, char *buf)

{
@@ -9240,7 +9240,7 @@ static ssize_t skip_kfence_store(struct kmem_cache *s, 
SLAB_ATTR(skip_kfence);

#endif



static struct attribute *slab_attrs[] = {

static const struct attribute *const slab_attrs[] = {

	&slab_size_attr.attr,

	&object_size_attr.attr,

	&objs_per_slab_attr.attr,
@@ -9323,7 +9323,7 @@ static ssize_t slab_attr_show(struct kobject *kobj, 
				struct attribute *attr,

				char *buf)

{

	struct slab_attribute *attribute;

	const struct slab_attribute *attribute;

	struct kmem_cache *s;



	attribute = to_slab_attr(attr);
@@ -9339,7 +9339,7 @@ static ssize_t slab_attr_store(struct kobject *kobj, 
				struct attribute *attr,

				const char *buf, size_t len)

{

	struct slab_attribute *attribute;

	const struct slab_attribute *attribute;

	struct kmem_cache *s;



	attribute = to_slab_attr(attr);