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Message-ID: <20231116012908.392077-2-peterx@redhat.com>
Date: Wed, 15 Nov 2023 20:28:57 -0500
From: Peter Xu <peterx@...hat.com>
To: linux-kernel@...r.kernel.org, linux-mm@...ck.org
Cc: Mike Kravetz <mike.kravetz@...cle.com>,
"Kirill A . Shutemov" <kirill@...temov.name>,
Lorenzo Stoakes <lstoakes@...il.com>,
Axel Rasmussen <axelrasmussen@...gle.com>,
Matthew Wilcox <willy@...radead.org>,
John Hubbard <jhubbard@...dia.com>,
Mike Rapoport <rppt@...nel.org>, peterx@...hat.com,
Hugh Dickins <hughd@...gle.com>,
David Hildenbrand <david@...hat.com>,
Andrea Arcangeli <aarcange@...hat.com>,
Rik van Riel <riel@...riel.com>,
James Houghton <jthoughton@...gle.com>,
Yang Shi <shy828301@...il.com>,
Jason Gunthorpe <jgg@...dia.com>,
Vlastimil Babka <vbabka@...e.cz>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH RFC 01/12] mm/hugetlb: Export hugetlbfs_pagecache_present()
It will be used outside hugetlb.c soon.
Signed-off-by: Peter Xu <peterx@...hat.com>
---
include/linux/hugetlb.h | 3 +++
mm/hugetlb.c | 4 ++--
2 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 236ec7b63c54..bb07279b8991 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -174,6 +174,9 @@ u32 hugetlb_fault_mutex_hash(struct address_space *mapping, pgoff_t idx);
pte_t *huge_pmd_share(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long addr, pud_t *pud);
+bool hugetlbfs_pagecache_present(struct hstate *h,
+ struct vm_area_struct *vma,
+ unsigned long address);
struct address_space *hugetlb_page_mapping_lock_write(struct page *hpage);
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 6feb3e0630d1..29705e5c6f40 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -6018,8 +6018,8 @@ static vm_fault_t hugetlb_wp(struct mm_struct *mm, struct vm_area_struct *vma,
/*
* Return whether there is a pagecache page to back given address within VMA.
*/
-static bool hugetlbfs_pagecache_present(struct hstate *h,
- struct vm_area_struct *vma, unsigned long address)
+bool hugetlbfs_pagecache_present(struct hstate *h,
+ struct vm_area_struct *vma, unsigned long address)
{
struct address_space *mapping = vma->vm_file->f_mapping;
pgoff_t idx = linear_page_index(vma, address);
--
2.41.0
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