[PATCH v3 1/4] mm/hugetlb: Pass folio instead of page to unmap_ref_private()

nifan.cxl
2025-04-28T17:18:22Z

From: Fan Ni <fan.ni@samsung.com>

The function unmap_ref_private() has only user, which passes in
&folio->page. Let it take folio directly.

Signed-off-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Muchun Song <muchun.song@linux.dev>
Reviewed-by: Sidhartha Kumar <sidhartha.kumar@oracle.com>
---
mm/hugetlb.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index e287d8050b40..b1268e7ca1f6 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -6039,7 +6039,7 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
* same region.
*/
static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
- struct page *page, unsigned long address)
+ struct folio *folio, unsigned long address)
{
struct hstate *h = hstate_vma(vma);
struct vm_area_struct *iter_vma;
@@ -6083,7 +6083,8 @@ static void unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
*/
if (!is_vma_resv_set(iter_vma, HPAGE_RESV_OWNER))
unmap_hugepage_range(iter_vma, address,
- address + huge_page_size(h), page, 0);
+ address + huge_page_size(h),
+ &folio->page, 0);
}
i_mmap_unlock_write(mapping);
}
@@ -6206,8 +6207,7 @@ static vm_fault_t hugetlb_wp(struct folio *pagecache_folio,
hugetlb_vma_unlock_read(vma);
mutex_unlock(&hugetlb_fault_mutex_table[hash]);

- unmap_ref_private(mm, vma, &old_folio->page,
- vmf->address);
+ unmap_ref_private(mm, vma, old_folio, vmf->address);

mutex_lock(&hugetlb_fault_mutex_table[hash]);
hugetlb_vma_lock_read(vma);
--
2.47.2