mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 08:02:07 +00:00
f95ba941d1
mips (and sparc32):
In file included from arch/mips/include/asm/tlb.h:21,
from mm/pgtable-generic.c:9:
include/asm-generic/tlb.h: In function `tlb_flush_mmu':
include/asm-generic/tlb.h:76: error: implicit declaration of function `release_pages'
include/asm-generic/tlb.h: In function `tlb_remove_page':
include/asm-generic/tlb.h:105: error: implicit declaration of function `page_cache_release'
free_pages_and_swap_cache() and free_page_and_swap_cache() are macros
which call release_pages() and page_cache_release(). The obvious fix is
to include pagemap.h in swap.h, where those macros are defined. But that
breaks sparc for weird reasons.
So fix it within mm/pgtable-generic.c instead.
Reported-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/*
|
|
* mm/pgtable-generic.c
|
|
*
|
|
* Generic pgtable methods declared in asm-generic/pgtable.h
|
|
*
|
|
* Copyright (C) 2010 Linus Torvalds
|
|
*/
|
|
|
|
#include <linux/pagemap.h>
|
|
#include <asm/tlb.h>
|
|
#include <asm-generic/pgtable.h>
|
|
|
|
#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
|
|
/*
|
|
* Only sets the access flags (dirty, accessed, and
|
|
* writable). Furthermore, we know it always gets set to a "more
|
|
* permissive" setting, which allows most architectures to optimize
|
|
* this. We return whether the PTE actually changed, which in turn
|
|
* instructs the caller to do things like update__mmu_cache. This
|
|
* used to be done in the caller, but sparc needs minor faults to
|
|
* force that call on sun4c so we changed this macro slightly
|
|
*/
|
|
int ptep_set_access_flags(struct vm_area_struct *vma,
|
|
unsigned long address, pte_t *ptep,
|
|
pte_t entry, int dirty)
|
|
{
|
|
int changed = !pte_same(*ptep, entry);
|
|
if (changed) {
|
|
set_pte_at(vma->vm_mm, address, ptep, entry);
|
|
flush_tlb_page(vma, address);
|
|
}
|
|
return changed;
|
|
}
|
|
#endif
|
|
|
|
#ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
|
|
int pmdp_set_access_flags(struct vm_area_struct *vma,
|
|
unsigned long address, pmd_t *pmdp,
|
|
pmd_t entry, int dirty)
|
|
{
|
|
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
|
|
int changed = !pmd_same(*pmdp, entry);
|
|
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
|
|
if (changed) {
|
|
set_pmd_at(vma->vm_mm, address, pmdp, entry);
|
|
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
|
|
}
|
|
return changed;
|
|
#else /* CONFIG_TRANSPARENT_HUGEPAGE */
|
|
BUG();
|
|
return 0;
|
|
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
|
|
}
|
|
#endif
|
|
|
|
#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
|
|
int ptep_clear_flush_young(struct vm_area_struct *vma,
|
|
unsigned long address, pte_t *ptep)
|
|
{
|
|
int young;
|
|
young = ptep_test_and_clear_young(vma, address, ptep);
|
|
if (young)
|
|
flush_tlb_page(vma, address);
|
|
return young;
|
|
}
|
|
#endif
|
|
|
|
#ifndef __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH
|
|
int pmdp_clear_flush_young(struct vm_area_struct *vma,
|
|
unsigned long address, pmd_t *pmdp)
|
|
{
|
|
int young;
|
|
#ifndef CONFIG_TRANSPARENT_HUGEPAGE
|
|
BUG();
|
|
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
|
|
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
|
|
young = pmdp_test_and_clear_young(vma, address, pmdp);
|
|
if (young)
|
|
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
|
|
return young;
|
|
}
|
|
#endif
|
|
|
|
#ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH
|
|
pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address,
|
|
pte_t *ptep)
|
|
{
|
|
pte_t pte;
|
|
pte = ptep_get_and_clear((vma)->vm_mm, address, ptep);
|
|
flush_tlb_page(vma, address);
|
|
return pte;
|
|
}
|
|
#endif
|
|
|
|
#ifndef __HAVE_ARCH_PMDP_CLEAR_FLUSH
|
|
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
|
|
pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
|
|
pmd_t *pmdp)
|
|
{
|
|
pmd_t pmd;
|
|
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
|
|
pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
|
|
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
|
|
return pmd;
|
|
}
|
|
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
|
|
#endif
|
|
|
|
#ifndef __HAVE_ARCH_PMDP_SPLITTING_FLUSH
|
|
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
|
|
pmd_t pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address,
|
|
pmd_t *pmdp)
|
|
{
|
|
pmd_t pmd = pmd_mksplitting(*pmdp);
|
|
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
|
|
set_pmd_at(vma->vm_mm, address, pmdp, pmd);
|
|
/* tlb flush only to serialize against gup-fast */
|
|
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
|
|
}
|
|
#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
|
|
#endif
|