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mm: Remove arch_remap() and mm-arch-hooks.h

Browse source 
powerpc was the last provider of arch_remap() and the last
user of mm-arch-hooks.h.

Since commit 526a9c4a72 ("powerpc/vdso: Provide vdso_remap()"),
arch_remap() hence mm-arch-hooks.h are not used anymore.

Remove them.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Christophe Leroy 2020-12-18 14:07:58 +00:00 • committed by Richard Weinberger
parent 3a5f415474
commit 731ecea3e5
5 changed files with 0 additions and 43 deletions
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1
arch/um/include/asm/Kbuild
View file

@ -14,7 +14,6 @@ generic-y += irq_regs.h
generic-y += irq_work.h
generic-y += kdebug.h
generic-y += mcs_spinlock.h
generic-y += mm-arch-hooks.h
generic-y += mmiowb.h
generic-y += module.lds.h
generic-y += param.h

1
include/asm-generic/Kbuild
View file

@ -35,7 +35,6 @@ mandatory-y += kprobes.h
mandatory-y += linkage.h
mandatory-y += local.h
mandatory-y += local64.h
mandatory-y += mm-arch-hooks.h
mandatory-y += mmiowb.h
mandatory-y += mmu.h
mandatory-y += mmu_context.h

16
include/asm-generic/mm-arch-hooks.h
View file

@ -1,16 +0,0 @@
/*
* Architecture specific mm hooks
*/
#ifndef _ASM_GENERIC_MM_ARCH_HOOKS_H
#define _ASM_GENERIC_MM_ARCH_HOOKS_H
/*
* This file should be included through arch/../include/asm/Kbuild for
* the architecture which doesn't need specific mm hooks.
*
* In that case, the generic hooks defined in include/linux/mm-arch-hooks.h
* are used.
*/
#endif /* _ASM_GENERIC_MM_ARCH_HOOKS_H */

22
include/linux/mm-arch-hooks.h
View file

@ -1,22 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Generic mm no-op hooks.
*
* Copyright (C) 2015, IBM Corporation
* Author: Laurent Dufour <ldufour@linux.vnet.ibm.com>
*/
#ifndef _LINUX_MM_ARCH_HOOKS_H
#define _LINUX_MM_ARCH_HOOKS_H
#include <asm/mm-arch-hooks.h>
#ifndef arch_remap
static inline void arch_remap(struct mm_struct *mm,
unsigned long old_start, unsigned long old_end,
unsigned long new_start, unsigned long new_end)
{
}
#define arch_remap arch_remap
#endif
#endif /* _LINUX_MM_ARCH_HOOKS_H */

3
mm/mremap.c
View file

@ -22,7 +22,6 @@
#include <linux/syscalls.h>
#include <linux/mmu_notifier.h>
#include <linux/uaccess.h>
#include <linux/mm-arch-hooks.h>
#include <linux/userfaultfd_k.h>
#include <asm/cacheflush.h>
@ -562,8 +561,6 @@ static unsigned long move_vma(struct vm_area_struct *vma,
new_addr = err;
} else {
mremap_userfaultfd_prep(new_vma, uf);
arch_remap(mm, old_addr, old_addr + old_len,
new_addr, new_addr + new_len);
}
/* Conceal VM_ACCOUNT so old reservation is not undone */