diff --git a/block/blk-crypto-sysfs.c b/block/blk-crypto-sysfs.c
index 55268edc0625..a304434489ba 100644
--- a/block/blk-crypto-sysfs.c
+++ b/block/blk-crypto-sysfs.c
@@ -116,7 +116,7 @@ static void blk_crypto_release(struct kobject *kobj)
 	kfree(container_of(kobj, struct blk_crypto_kobj, kobj));
 }
 
-static struct kobj_type blk_crypto_ktype = {
+static const struct kobj_type blk_crypto_ktype = {
 	.default_groups = blk_crypto_attr_groups,
 	.sysfs_ops	= &blk_crypto_attr_ops,
 	.release	= blk_crypto_release,
diff --git a/block/blk-ia-ranges.c b/block/blk-ia-ranges.c
index 2141931ddd37..c9eb4241e048 100644
--- a/block/blk-ia-ranges.c
+++ b/block/blk-ia-ranges.c
@@ -75,7 +75,7 @@ static void blk_ia_range_sysfs_nop_release(struct kobject *kobj)
 {
 }
 
-static struct kobj_type blk_ia_range_ktype = {
+static const struct kobj_type blk_ia_range_ktype = {
 	.sysfs_ops	= &blk_ia_range_sysfs_ops,
 	.default_groups	= blk_ia_range_groups,
 	.release	= blk_ia_range_sysfs_nop_release,
@@ -94,7 +94,7 @@ static void blk_ia_ranges_sysfs_release(struct kobject *kobj)
 	kfree(iars);
 }
 
-static struct kobj_type blk_ia_ranges_ktype = {
+static const struct kobj_type blk_ia_ranges_ktype = {
 	.release	= blk_ia_ranges_sysfs_release,
 };
 
diff --git a/block/blk-integrity.c b/block/blk-integrity.c
index 69eed260a823..8f01d786f5cb 100644
--- a/block/blk-integrity.c
+++ b/block/blk-integrity.c
@@ -356,7 +356,7 @@ static const struct sysfs_ops integrity_ops = {
 	.store	= &integrity_attr_store,
 };
 
-static struct kobj_type integrity_ktype = {
+static const struct kobj_type integrity_ktype = {
 	.default_groups = integrity_groups,
 	.sysfs_ops	= &integrity_ops,
 };
diff --git a/block/blk-mq-sysfs.c b/block/blk-mq-sysfs.c
index 2dfd7853a804..1b2b0d258e46 100644
--- a/block/blk-mq-sysfs.c
+++ b/block/blk-mq-sysfs.c
@@ -129,15 +129,15 @@ static const struct sysfs_ops blk_mq_hw_sysfs_ops = {
 	.show	= blk_mq_hw_sysfs_show,
 };
 
-static struct kobj_type blk_mq_ktype = {
+static const struct kobj_type blk_mq_ktype = {
 	.release	= blk_mq_sysfs_release,
 };
 
-static struct kobj_type blk_mq_ctx_ktype = {
+static const struct kobj_type blk_mq_ctx_ktype = {
 	.release	= blk_mq_ctx_sysfs_release,
 };
 
-static struct kobj_type blk_mq_hw_ktype = {
+static const struct kobj_type blk_mq_hw_ktype = {
 	.sysfs_ops	= &blk_mq_hw_sysfs_ops,
 	.default_groups = default_hw_ctx_groups,
 	.release	= blk_mq_hw_sysfs_release,
diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
index d70ebecb5347..f1fce1c7fa44 100644
--- a/block/blk-sysfs.c
+++ b/block/blk-sysfs.c
@@ -765,7 +765,7 @@ static void blk_queue_release(struct kobject *kobj)
 	/* nothing to do here, all data is associated with the parent gendisk */
 }
 
-static struct kobj_type blk_queue_ktype = {
+static const struct kobj_type blk_queue_ktype = {
 	.default_groups = blk_queue_attr_groups,
 	.sysfs_ops	= &queue_sysfs_ops,
 	.release	= blk_queue_release,
diff --git a/block/elevator.c b/block/elevator.c
index adee58e48e2d..24909069f872 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -126,7 +126,7 @@ static struct elevator_type *elevator_find_get(struct request_queue *q,
 	return e;
 }
 
-static struct kobj_type elv_ktype;
+static const struct kobj_type elv_ktype;
 
 struct elevator_queue *elevator_alloc(struct request_queue *q,
 				  struct elevator_type *e)
@@ -455,7 +455,7 @@ static const struct sysfs_ops elv_sysfs_ops = {
 	.store	= elv_attr_store,
 };
 
-static struct kobj_type elv_ktype = {
+static const struct kobj_type elv_ktype = {
 	.sysfs_ops	= &elv_sysfs_ops,
 	.release	= elevator_release,
 };