From: Kefeng Wang <wangkefeng.wang@huawei.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: <linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>,
Matthew Wilcox <willy@infradead.org>,
David Hildenbrand <david@redhat.com>,
Sidhartha Kumar <sidhartha.kumar@oracle.com>,
Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: [PATCH v2 2/6] mm: memory: use a folio in validate_page_before_insert()
Date: Mon, 13 Nov 2023 23:22:18 +0800 [thread overview]
Message-ID: <20231113152222.3495908-3-wangkefeng.wang@huawei.com> (raw)
In-Reply-To: <20231113152222.3495908-1-wangkefeng.wang@huawei.com>
Use a folio in validate_page_before_insert() to save two
compound_head() calls.
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
mm/memory.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/mm/memory.c b/mm/memory.c
index c32954e16b28..379354b35891 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1841,9 +1841,12 @@ pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
static int validate_page_before_insert(struct page *page)
{
- if (PageAnon(page) || PageSlab(page) || page_has_type(page))
+ struct folio *folio = page_folio(page);
+
+ if (folio_test_anon(folio) || folio_test_slab(folio) ||
+ page_has_type(page))
return -EINVAL;
- flush_dcache_page(page);
+ flush_dcache_folio(folio);
return 0;
}
--
2.27.0
next prev parent reply other threads:[~2023-11-13 15:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-13 15:22 [PATCH v2 0/6] mm: cleanup and use more folio in page fault Kefeng Wang
2023-11-13 15:22 ` [PATCH v2 1/6] mm: ksm: use more folio api in ksm_might_need_to_copy() Kefeng Wang
2023-11-13 15:22 ` Kefeng Wang [this message]
2023-11-13 19:30 ` [PATCH v2 2/6] mm: memory: use a folio in validate_page_before_insert() Vishal Moola
2023-11-13 15:22 ` [PATCH v2 3/6] mm: memory: rename page_copy_prealloc() to folio_prealloc() Kefeng Wang
2023-11-13 19:31 ` Vishal Moola
2023-11-13 15:22 ` [PATCH v2 4/6] mm: memory: use a folio in do_cow_page() Kefeng Wang
2023-11-13 19:51 ` Vishal Moola
2023-11-13 15:22 ` [PATCH v2 5/6] mm: memory: use folio_prealloc() in wp_page_copy() Kefeng Wang
2023-11-13 20:07 ` Vishal Moola
2023-11-13 15:22 ` [PATCH v2 6/6] mm: memory: use folio_prealloc() in do_anonymous_page() Kefeng Wang
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