Messages in this thread Patch in this message | | | From | Zi Yan <> | Subject | [RFC PATCH 07/15] mm: hugetlb: use PAGES_PER_SECTION to check mem_map discontiguity | Date | Thu, 5 Aug 2021 15:02:45 -0400 |
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From: Zi Yan <ziy@nvidia.com>
mem_map is only guaranteed to be virtually contiguous within a section. Use PAGES_PER_SECTION to check the condition properly.
Signed-off-by: Zi Yan <ziy@nvidia.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org --- mm/hugetlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index ce79d76c42ce..7f78203d6feb 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -1784,7 +1784,7 @@ pgoff_t hugetlb_basepage_index(struct page *page) pgoff_t index = page_index(page_head); unsigned long compound_idx; - if (compound_order(page_head) >= MAX_ORDER) + if (compound_order(page_head) >= PAGES_PER_SECTION) compound_idx = page_to_pfn(page) - page_to_pfn(page_head); else compound_idx = page - page_head; -- 2.30.2
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