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    Subject[patch 2/5] remove ptep_establish.
    From: Martin Schwidefsky <schwidefsky@de.ibm.com>

    The last user of ptep_establish in mm/ is long gone. Remove the
    architecture primitive as well.

    Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
    ---

    include/asm-generic/pgtable.h | 19 -------------------
    include/asm-i386/pgtable.h | 11 -----------
    include/asm-ia64/pgtable.h | 6 ++++--
    3 files changed, 4 insertions(+), 32 deletions(-)

    diff -urpN linux-2.6/include/asm-generic/pgtable.h linux-2.6-patched/include/asm-generic/pgtable.h
    --- linux-2.6/include/asm-generic/pgtable.h 2007-06-18 09:43:22.000000000 +0200
    +++ linux-2.6-patched/include/asm-generic/pgtable.h 2007-06-29 15:44:10.000000000 +0200
    @@ -3,25 +3,6 @@

    #ifndef __ASSEMBLY__

    -#ifndef __HAVE_ARCH_PTEP_ESTABLISH
    -/*
    - * Establish a new mapping:
    - * - flush the old one
    - * - update the page tables
    - * - inform the TLB about the new one
    - *
    - * We hold the mm semaphore for reading, and the pte lock.
    - *
    - * Note: the old pte is known to not be writable, so we don't need to
    - * worry about dirty bits etc getting lost.
    - */
    -#define ptep_establish(__vma, __address, __ptep, __entry) \
    -do { \
    - set_pte_at((__vma)->vm_mm, (__address), __ptep, __entry); \
    - flush_tlb_page(__vma, __address); \
    -} while (0)
    -#endif
    -
    #ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
    /*
    * Largely same as above, but only sets the access flags (dirty,
    diff -urpN linux-2.6/include/asm-i386/pgtable.h linux-2.6-patched/include/asm-i386/pgtable.h
    --- linux-2.6/include/asm-i386/pgtable.h 2007-06-18 09:43:22.000000000 +0200
    +++ linux-2.6-patched/include/asm-i386/pgtable.h 2007-06-29 15:44:10.000000000 +0200
    @@ -317,17 +317,6 @@ static inline pte_t native_local_ptep_ge
    __ret; \
    })

    -/*
    - * Rules for using ptep_establish: the pte MUST be a user pte, and
    - * must be a present->present transition.
    - */
    -#define __HAVE_ARCH_PTEP_ESTABLISH
    -#define ptep_establish(vma, address, ptep, pteval) \
    -do { \
    - set_pte_present((vma)->vm_mm, address, ptep, pteval); \
    - flush_tlb_page(vma, address); \
    -} while (0)
    -
    #define __HAVE_ARCH_PTEP_CLEAR_DIRTY_FLUSH
    #define ptep_clear_flush_dirty(vma, address, ptep) \
    ({ \
    diff -urpN linux-2.6/include/asm-ia64/pgtable.h linux-2.6-patched/include/asm-ia64/pgtable.h
    --- linux-2.6/include/asm-ia64/pgtable.h 2007-06-18 09:43:22.000000000 +0200
    +++ linux-2.6-patched/include/asm-ia64/pgtable.h 2007-06-29 15:44:10.000000000 +0200
    @@ -546,8 +546,10 @@ extern void lazy_mmu_prot_update (pte_t
    # define ptep_set_access_flags(__vma, __addr, __ptep, __entry, __safely_writable) \
    ({ \
    int __changed = !pte_same(*(__ptep), __entry); \
    - if (__changed) \
    - ptep_establish(__vma, __addr, __ptep, __entry); \
    + if (__changed) { \
    + set_pte_at((__vma)->vm_mm, (__addr), __ptep, __entry); \
    + flush_tlb_page(__vma, __addr); \
    + } \
    __changed; \
    })
    #endif
    --
    blue skies,
    Martin.

    "Reality continues to ruin my life." - Calvin.

    -
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