mm/ksm: use helper macro __ATTR_RW

Use helper macro __ATTR_RW to define KSM_ATTR to make code more clear.
Minor readability improvement.

Link: https://lkml.kernel.org/r/20220221115809.26381-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/ksm.c b/mm/ksm.c
index 4a7f861..03d599b 100644 (file)
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -2829,8 +2829,7 @@ static void wait_while_offlining(void)
 #define KSM_ATTR_RO(_name) \
        static struct kobj_attribute _name##_attr = __ATTR_RO(_name)
 #define KSM_ATTR(_name) \
-       static struct kobj_attribute _name##_attr = \
-               __ATTR(_name, 0644, _name##_show, _name##_store)
+       static struct kobj_attribute _name##_attr = __ATTR_RW(_name)
 
 static ssize_t sleep_millisecs_show(struct kobject *kobj,
                                    struct kobj_attribute *attr, char *buf)