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Message-ID: <20220729080106.12752-6-linmiaohe@huawei.com>
Date: Fri, 29 Jul 2022 16:01:06 +0800
From: Miaohe Lin <linmiaohe@...wei.com>
To: <akpm@...ux-foundation.org>
CC: <mike.kravetz@...cle.com>, <almasrymina@...gle.com>,
<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
<linmiaohe@...wei.com>
Subject: [PATCH v2 5/5] hugetlb_cgroup: use helper for_each_hstate and hstate_index
Use helper for_each_hstate and hstate_index to iterate the hstate and get
the hstate index. Minor readability improvement.
Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
Reviewed-by: Mina Almasry <almasrymina@...gle.com>
---
mm/hugetlb_cgroup.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/mm/hugetlb_cgroup.c b/mm/hugetlb_cgroup.c
index 2affccfe59f1..f61d132df52b 100644
--- a/mm/hugetlb_cgroup.c
+++ b/mm/hugetlb_cgroup.c
@@ -75,11 +75,11 @@ parent_hugetlb_cgroup(struct hugetlb_cgroup *h_cg)
static inline bool hugetlb_cgroup_have_usage(struct hugetlb_cgroup *h_cg)
{
- int idx;
+ struct hstate *h;
- for (idx = 0; idx < hugetlb_max_hstate; idx++) {
+ for_each_hstate(h) {
if (page_counter_read(
- hugetlb_cgroup_counter_from_cgroup(h_cg, idx)))
+ hugetlb_cgroup_counter_from_cgroup(h_cg, hstate_index(h))))
return true;
}
return false;
@@ -225,17 +225,14 @@ static void hugetlb_cgroup_css_offline(struct cgroup_subsys_state *css)
struct hugetlb_cgroup *h_cg = hugetlb_cgroup_from_css(css);
struct hstate *h;
struct page *page;
- int idx;
do {
- idx = 0;
for_each_hstate(h) {
spin_lock_irq(&hugetlb_lock);
list_for_each_entry(page, &h->hugepage_activelist, lru)
- hugetlb_cgroup_move_parent(idx, h_cg, page);
+ hugetlb_cgroup_move_parent(hstate_index(h), h_cg, page);
spin_unlock_irq(&hugetlb_lock);
- idx++;
}
cond_resched();
} while (hugetlb_cgroup_have_usage(h_cg));
--
2.23.0
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