The patch titled
Subject: mm/x86: remove dead code for hugetlbpage.c
has been added to the -mm mm-unstable branch. Its filename is
mm-x86-remove-dead-code-for-hugetlbpagec.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-x86-remove-dead-code-for-hugetlbpagec.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Peter Xu <peterx@xxxxxxxxxx>
Subject: mm/x86: remove dead code for hugetlbpage.c
Date: Wed, 25 May 2022 15:52:20 -0400
It seems to exist since the old times and never used once. Remove them.
Link: https://lkml.kernel.org/r/20220525195220.10241-1-peterx@xxxxxxxxxx
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
Acked-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/mm/hugetlbpage.c | 39 ------------------------------------
1 file changed, 39 deletions(-)
--- a/arch/x86/mm/hugetlbpage.c~mm-x86-remove-dead-code-for-hugetlbpagec
+++ a/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,
_
Patches currently in -mm which might be from peterx@xxxxxxxxxx are
mm-x86-remove-dead-code-for-hugetlbpagec.patch
