From 102a0743326a03cd1a1202ceda21e175b7d3575c Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:20:52 +0000
Subject: [PATCH] add new system file
---
kernel/mm/page_vma_mapped.c | 15 +++++++++------
1 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/kernel/mm/page_vma_mapped.c b/kernel/mm/page_vma_mapped.c
index edca786..610ebbe 100644
--- a/kernel/mm/page_vma_mapped.c
+++ b/kernel/mm/page_vma_mapped.c
@@ -52,12 +52,16 @@
return true;
}
-static inline bool pfn_in_hpage(struct page *hpage, unsigned long pfn)
+static inline bool pfn_is_match(struct page *page, unsigned long pfn)
{
- unsigned long hpage_pfn = page_to_pfn(hpage);
+ unsigned long page_pfn = page_to_pfn(page);
+
+ /* normal page and hugetlbfs page */
+ if (!PageTransCompound(page) || PageHuge(page))
+ return page_pfn == pfn;
/* THP can be referenced by any subpage */
- return pfn >= hpage_pfn && pfn - hpage_pfn < hpage_nr_pages(hpage);
+ return pfn >= page_pfn && pfn - page_pfn < thp_nr_pages(page);
}
/**
@@ -108,7 +112,7 @@
pfn = pte_pfn(*pvmw->pte);
}
- return pfn_in_hpage(pvmw->page, pfn);
+ return pfn_is_match(pvmw->page, pfn);
}
static void step_forward(struct page_vma_mapped_walk *pvmw, unsigned long size)
@@ -162,8 +166,7 @@
return not_found(pvmw);
/* when pud is not present, pte will be NULL */
- pvmw->pte = huge_pte_offset(mm, pvmw->address,
- PAGE_SIZE << compound_order(page));
+ pvmw->pte = huge_pte_offset(mm, pvmw->address, page_size(page));
if (!pvmw->pte)
return false;
--
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