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Commit 7f2e9525 authored by Gerald Schaefer's avatar Gerald Schaefer Committed by Linus Torvalds
Browse files

hugetlbfs: common code update for s390 



Huge ptes have a special type on s390 and cannot be handled with the standard
pte functions in certain cases, e.g.  because of a different location of the
invalid bit.  This patch adds some new architecture- specific functions to
hugetlb common code, as a prerequisite for the s390 large page support.

This won't affect other architectures in functionality, but I need to add some
new dummy inline functions to the headers.

Acked-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: default avatarGerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8fe627ec

include/asm-ia64/hugetlb.h

+37 −0
Original line number Diff line number Diff line
@@ -39,4 +39,41 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 
{

}



static inline int huge_pte_none(pte_t pte)

{

	return pte_none(pte);

}



static inline pte_t huge_pte_wrprotect(pte_t pte)

{

	return pte_wrprotect(pte);

}



static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,

					   unsigned long addr, pte_t *ptep)

{

	ptep_set_wrprotect(mm, addr, ptep);

}



static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,

					     unsigned long addr, pte_t *ptep,

					     pte_t pte, int dirty)

{

	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);

}



static inline pte_t huge_ptep_get(pte_t *ptep)

{

	return *ptep;

}



static inline int arch_prepare_hugepage(struct page *page)

{

	return 0;

}



static inline void arch_release_hugepage(struct page *page)

{

}



#endif /* _ASM_IA64_HUGETLB_H */

include/asm-powerpc/hugetlb.h

+37 −0
Original line number Diff line number Diff line
@@ -39,4 +39,41 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 
{

}



static inline int huge_pte_none(pte_t pte)

{

	return pte_none(pte);

}



static inline pte_t huge_pte_wrprotect(pte_t pte)

{

	return pte_wrprotect(pte);

}



static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,

					   unsigned long addr, pte_t *ptep)

{

	ptep_set_wrprotect(mm, addr, ptep);

}



static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,

					     unsigned long addr, pte_t *ptep,

					     pte_t pte, int dirty)

{

	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);

}



static inline pte_t huge_ptep_get(pte_t *ptep)

{

	return *ptep;

}



static inline int arch_prepare_hugepage(struct page *page)

{

	return 0;

}



static inline void arch_release_hugepage(struct page *page)

{

}



#endif /* _ASM_POWERPC_HUGETLB_H */

include/asm-sh/hugetlb.h

+37 −0
Original line number Diff line number Diff line
@@ -51,4 +51,41 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 
{

}



static inline int huge_pte_none(pte_t pte)

{

	return pte_none(pte);

}



static inline pte_t huge_pte_wrprotect(pte_t pte)

{

	return pte_wrprotect(pte);

}



static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,

					   unsigned long addr, pte_t *ptep)

{

	ptep_set_wrprotect(mm, addr, ptep);

}



static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,

					     unsigned long addr, pte_t *ptep,

					     pte_t pte, int dirty)

{

	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);

}



static inline pte_t huge_ptep_get(pte_t *ptep)

{

	return *ptep;

}



static inline int arch_prepare_hugepage(struct page *page)

{

	return 0;

}



static inline void arch_release_hugepage(struct page *page)

{

}



#endif /* _ASM_SH_HUGETLB_H */

include/asm-sparc64/hugetlb.h

+37 −0
Original line number Diff line number Diff line
@@ -44,4 +44,41 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 
{

}



static inline int huge_pte_none(pte_t pte)

{

	return pte_none(pte);

}



static inline pte_t huge_pte_wrprotect(pte_t pte)

{

	return pte_wrprotect(pte);

}



static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,

					   unsigned long addr, pte_t *ptep)

{

	ptep_set_wrprotect(mm, addr, ptep);

}



static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,

					     unsigned long addr, pte_t *ptep,

					     pte_t pte, int dirty)

{

	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);

}



static inline pte_t huge_ptep_get(pte_t *ptep)

{

	return *ptep;

}



static inline int arch_prepare_hugepage(struct page *page)

{

	return 0;

}



static inline void arch_release_hugepage(struct page *page)

{

}



#endif /* _ASM_SPARC64_HUGETLB_H */

include/asm-x86/hugetlb.h

+37 −0
Original line number Diff line number Diff line
@@ -51,4 +51,41 @@ static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 
{

}



static inline int huge_pte_none(pte_t pte)

{

	return pte_none(pte);

}



static inline pte_t huge_pte_wrprotect(pte_t pte)

{

	return pte_wrprotect(pte);

}



static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,

					   unsigned long addr, pte_t *ptep)

{

	ptep_set_wrprotect(mm, addr, ptep);

}



static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,

					     unsigned long addr, pte_t *ptep,

					     pte_t pte, int dirty)

{

	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);

}



static inline pte_t huge_ptep_get(pte_t *ptep)

{

	return *ptep;

}



static inline int arch_prepare_hugepage(struct page *page)

{

	return 0;

}



static inline void arch_release_hugepage(struct page *page)

{

}



#endif /* _ASM_X86_HUGETLB_H */