mm/hugetlb: use helper macro __ATTR_RW

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

Link: https://lkml.kernel.org/r/20220222112731.33479-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index c57eea5..369ff07 100644 (file)
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3499,8 +3499,7 @@ static int demote_pool_huge_page(struct hstate *h, nodemask_t *nodes_allowed)
        static struct kobj_attribute _name##_attr = __ATTR_WO(_name)
 
 #define HSTATE_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 struct kobject *hugepages_kobj;
 static struct kobject *hstate_kobjs[HUGE_MAX_HSTATE];