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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2023-11-18 10:32:29 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-12 10:57:05 -0800 |
| commit | f8b6187d8dd98fd32fe393071f362a7b6beaad0a (patch) | |
| tree | ae8f93646b483f4b3750c8c51fd5d13c54f9188a /mm/memory.c | |
| parent | 1486fb50136f4799946f5ecfe050094574647153 (diff) | |
| download | lwn-f8b6187d8dd98fd32fe393071f362a7b6beaad0a.tar.gz lwn-f8b6187d8dd98fd32fe393071f362a7b6beaad0a.zip | |
mm: memory: use a folio in validate_page_before_insert()
Use a folio in validate_page_before_insert() to save two compound_head()
calls.
Link: https://lkml.kernel.org/r/20231118023232.1409103-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c index a8ff3489211b..5a917b21a122 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1842,9 +1842,12 @@ 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; } |