linux-kernel - [PATCH v2] mm/hugetlb: Drop __unmap_hugepage

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Date:   Fri, 17 Sep 2021 12:51:08 -0400
From:   Peter Xu <peterx@...hat.com>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Cc:     Andrew Morton <akpm@...ux-foundation.org>, peterx@...hat.com,
        Mike Kravetz <mike.kravetz@...cle.com>,
        John Hubbard <jhubbard@...dia.com>,
        Muchun Song <songmuchun@...edance.com>
Subject: [PATCH v2] mm/hugetlb: Drop __unmap_hugepage_range definition from hugetlb.h

Remove __unmap_hugepage_range() from the header file, because it is only used
in hugetlb.c.

Suggested-by: Mike Kravetz <mike.kravetz@...cle.com>
Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
Reviewed-by: John Hubbard <jhubbard@...dia.com>
Reviewed-by: Muchun Song <songmuchun@...edance.com>
Signed-off-by: Peter Xu <peterx@...hat.com>
---
 include/linux/hugetlb.h | 10 ----------
 mm/hugetlb.c            |  6 +++---
 2 files changed, 3 insertions(+), 13 deletions(-)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 1faebe1cd0ed..3cbf60464398 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -143,9 +143,6 @@ void __unmap_hugepage_range_final(struct mmu_gather *tlb,
 			  struct vm_area_struct *vma,
 			  unsigned long start, unsigned long end,
 			  struct page *ref_page);
-void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
-				unsigned long start, unsigned long end,
-				struct page *ref_page);
 void hugetlb_report_meminfo(struct seq_file *);
 int hugetlb_report_node_meminfo(char *buf, int len, int nid);
 void hugetlb_show_meminfo(void);
@@ -385,13 +382,6 @@ static inline void __unmap_hugepage_range_final(struct mmu_gather *tlb,
 	BUG();
 }
 
-static inline void __unmap_hugepage_range(struct mmu_gather *tlb,
-			struct vm_area_struct *vma, unsigned long start,
-			unsigned long end, struct page *ref_page)
-{
-	BUG();
-}
-
 static inline vm_fault_t hugetlb_fault(struct mm_struct *mm,
 			struct vm_area_struct *vma, unsigned long address,
 			unsigned int flags)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 95dc7b83381f..d394d9545c4e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4426,9 +4426,9 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src,
 	return ret;
 }
 
-void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
-			    unsigned long start, unsigned long end,
-			    struct page *ref_page)
+static void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
+				   unsigned long start, unsigned long end,
+				   struct page *ref_page)
 {
 	struct mm_struct *mm = vma->vm_mm;
 	unsigned long address;
-- 
2.31.1