Commit cd16dd03 authored by Peter Xu's avatar Peter Xu Committed by Andrew Morton
Browse files

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: default avatarPeter Xu <peterx@redhat.com>
Acked-by: default avatarMuchun Song <songmuchun@bytedance.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent b13baccc

arch/x86/mm/hugetlbpage.c

+0 −39
Original line number Diff line number Diff line
@@ -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,