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Message-ID: <20221229122503.149083-1-wangkefeng.wang@huawei.com>
Date: Thu, 29 Dec 2022 20:25:03 +0800
From: Kefeng Wang <wangkefeng.wang@...wei.com>
To: Andrew Morton <akpm@...ux-foundation.org>, <linux-mm@...ck.org>
CC: <linux-kernel@...r.kernel.org>, <willy@...radead.org>,
Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH] mm: huge_memory: convert split_huge_pages_all() to use a folio
Straightforwardly convert split_huge_pages_all() to use a folio.
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
mm/huge_memory.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 266c4b557946..c8cbe7f62eaa 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2932,6 +2932,7 @@ static void split_huge_pages_all(void)
{
struct zone *zone;
struct page *page;
+ struct folio *folio;
unsigned long pfn, max_zone_pfn;
unsigned long total = 0, split = 0;
@@ -2944,24 +2945,32 @@ static void split_huge_pages_all(void)
int nr_pages;
page = pfn_to_online_page(pfn);
- if (!page || !get_page_unless_zero(page))
+ if (!page || PageTail(page))
+ continue;
+ folio = page_folio(page);
+ if (!folio_try_get(folio))
continue;
- if (zone != page_zone(page))
+ if (unlikely(page_folio(page) != folio))
+ goto next;
+
+ if (zone != folio_zone(folio))
goto next;
- if (!PageHead(page) || PageHuge(page) || !PageLRU(page))
+ if (!folio_test_large(folio)
+ || folio_test_hugetlb(folio)
+ || !folio_test_lru(folio))
goto next;
total++;
- lock_page(page);
- nr_pages = thp_nr_pages(page);
- if (!split_huge_page(page))
+ folio_lock(folio);
+ nr_pages = folio_nr_pages(folio);
+ if (!split_folio(folio))
split++;
pfn += nr_pages - 1;
- unlock_page(page);
+ folio_unlock(folio);
next:
- put_page(page);
+ folio_put(folio);
cond_resched();
}
}
--
2.35.3
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