Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   =?utf-8?q?Thomas_Wei=C3=9Fschuh?= <linux@weissschuh.net>
Date:   Fri, 24 Mar 2023 15:35:27 +0000
Subject: [PATCH] mm/damon/sysfs: make more kobj_type structures constant
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
Message-Id: <20230324-b4-kobj_type-damon2-v1-1-48ddbf1c8fcf@weissschuh.net>
To:     SeongJae Park <sj@kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>
Cc:     damon@lists.linux.dev, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org,
        =?utf-8?q?Thomas_Wei=C3=9Fschuh?= <linux@weissschuh.net>
Precedence: bulk

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.

These structures were not constified in
commit e56397e8c40d ("mm/damon/sysfs: make kobj_type structures constant")
as they didn't exist when that patch was written.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
---
 mm/damon/sysfs-schemes.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/damon/sysfs-schemes.c b/mm/damon/sysfs-schemes.c
index 3cdad5a7f936..50cf89dcd898 100644
--- a/mm/damon/sysfs-schemes.c
+++ b/mm/damon/sysfs-schemes.c
@@ -384,7 +384,7 @@ static struct attribute *damon_sysfs_scheme_filter_attrs[] = {
 };
 ATTRIBUTE_GROUPS(damon_sysfs_scheme_filter);
 
-static struct kobj_type damon_sysfs_scheme_filter_ktype = {
+static const struct kobj_type damon_sysfs_scheme_filter_ktype = {
 	.release = damon_sysfs_scheme_filter_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 	.default_groups = damon_sysfs_scheme_filter_groups,
@@ -503,7 +503,7 @@ static struct attribute *damon_sysfs_scheme_filters_attrs[] = {
 };
 ATTRIBUTE_GROUPS(damon_sysfs_scheme_filters);
 
-static struct kobj_type damon_sysfs_scheme_filters_ktype = {
+static const struct kobj_type damon_sysfs_scheme_filters_ktype = {
 	.release = damon_sysfs_scheme_filters_release,
 	.sysfs_ops = &kobj_sysfs_ops,
 	.default_groups = damon_sysfs_scheme_filters_groups,

---
base-commit: 1e760fa3596e8c7f08412712c168288b79670d78
change-id: 20230324-b4-kobj_type-damon2-0238ee9e8d8c

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