linux-kernel - [PATCH v2 1/2] mm: hugetlb: use flush_hugetlb_tlb_range() in move_hugetlb_page

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Date:   Tue, 1 Aug 2023 10:31:44 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Muchun Song <muchun.song@...ux.dev>,
        Mina Almasry <almasrymina@...gle.com>, <kirill@...temov.name>,
        <joel@...lfernandes.org>, <william.kucharski@...cle.com>,
        <kaleshsingh@...gle.com>, <linux-mm@...ck.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <21cnbao@...il.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Muchun Song <songmuchun@...edance.com>
Subject: [PATCH v2 1/2] mm: hugetlb: use flush_hugetlb_tlb_range() in move_hugetlb_page_tables()

Archs may need to do special things when flushing hugepage tlb,
so use the more applicable flush_hugetlb_tlb_range() instead of
flush_tlb_range().

Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
Acked-by: Muchun Song <songmuchun@...edance.com>
Fixes: 550a7d60bd5e ("mm, hugepages: add mremap() support for hugepage backed vma")
Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 mm/hugetlb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 64a3239b6407..ac876bfba340 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5281,9 +5281,9 @@ int move_hugetlb_page_tables(struct vm_area_struct *vma,
 	}
 
 	if (shared_pmd)
-		flush_tlb_range(vma, range.start, range.end);
+		flush_hugetlb_tlb_range(vma, range.start, range.end);
 	else
-		flush_tlb_range(vma, old_end - len, old_end);
+		flush_hugetlb_tlb_range(vma, old_end - len, old_end);
 	mmu_notifier_invalidate_range_end(&range);
 	i_mmap_unlock_write(mapping);
 	hugetlb_vma_unlock_write(vma);
-- 
2.41.0