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Message-ID: <20210316124007.20474-7-linmiaohe@huawei.com>
Date: Tue, 16 Mar 2021 08:40:07 -0400
From: Miaohe Lin <linmiaohe@...wei.com>
To: <akpm@...ux-foundation.org>
CC: <ziy@...dia.com>, <willy@...radead.org>,
<william.kucharski@...cle.com>, <vbabka@...e.cz>,
<peterx@...hat.com>, <yulei.kernel@...il.com>, <walken@...gle.com>,
<aneesh.kumar@...ux.ibm.com>, <rcampbell@...dia.com>,
<thomas_os@...pmail.org>, <yang.shi@...ux.alibaba.com>,
<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
<linmiaohe@...wei.com>
Subject: [PATCH v2 6/6] mm/huge_memory.c: use helper function migration_entry_to_page()
It's more recommended to use helper function migration_entry_to_page() to
get the page via migration entry. We can also enjoy the PageLocked()
check there.
Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
mm/huge_memory.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index ebfb0bf2e3fd..2c68123dc525 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1693,7 +1693,7 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
VM_BUG_ON(!is_pmd_migration_entry(orig_pmd));
entry = pmd_to_swp_entry(orig_pmd);
- page = pfn_to_page(swp_offset(entry));
+ page = migration_entry_to_page(entry);
flush_needed = 0;
} else
WARN_ONCE(1, "Non present huge pmd without pmd migration enabled!");
@@ -2101,7 +2101,7 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
swp_entry_t entry;
entry = pmd_to_swp_entry(old_pmd);
- page = pfn_to_page(swp_offset(entry));
+ page = migration_entry_to_page(entry);
write = is_write_migration_entry(entry);
young = false;
soft_dirty = pmd_swp_soft_dirty(old_pmd);
--
2.19.1
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