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authorPeter Xu <peterx@redhat.com>2022-05-25 15:52:20 -0400
committerakpm <akpm@linux-foundation.org>2022-06-16 19:48:27 -0700
commitcd16dd03737c30608b78d235b17b3ab935ed18db (patch)
tree963eba9303b03e2ad85e33cc0083755053cc71c0
parentb13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3 (diff)
mm/x86: remove dead code for hugetlbpage.c
It seems to exist since the old times and never used once. Remove them. Link: https://lkml.kernel.org/r/20220525195220.10241-1-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Acked-by: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
-rw-r--r--arch/x86/mm/hugetlbpage.c39
1 files changed, 0 insertions, 39 deletions
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index a0d023cb4292..509408da0da1 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -19,44 +19,6 @@
#include <asm/tlbflush.h>
#include <asm/elf.h>
-#if 0 /* This is just for testing */
-struct page *
-follow_huge_addr(struct mm_struct *mm, unsigned long address, int write)
-{
- unsigned long start = address;
- int length = 1;
- int nr;
- struct page *page;
- struct vm_area_struct *vma;
-
- vma = find_vma(mm, addr);
- if (!vma || !is_vm_hugetlb_page(vma))
- return ERR_PTR(-EINVAL);
-
- pte = huge_pte_offset(mm, address, vma_mmu_pagesize(vma));
-
- /* hugetlb should be locked, and hence, prefaulted */
- WARN_ON(!pte || pte_none(*pte));
-
- page = &pte_page(*pte)[vpfn % (HPAGE_SIZE/PAGE_SIZE)];
-
- WARN_ON(!PageHead(page));
-
- return page;
-}
-
-int pmd_huge(pmd_t pmd)
-{
- return 0;
-}
-
-int pud_huge(pud_t pud)
-{
- return 0;
-}
-
-#else
-
/*
* pmd_huge() returns 1 if @pmd is hugetlb related entry, that is normal
* hugetlb entry or non-present (migration or hwpoisoned) hugetlb entry.
@@ -72,7 +34,6 @@ int pud_huge(pud_t pud)
{
return !!(pud_val(pud) & _PAGE_PSE);
}
-#endif
#ifdef CONFIG_HUGETLB_PAGE
static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,