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    Subject[PATCH 15/15] mm: remove install_page limit
    Remove the INT_MAX/2 limit on remap_file_pages mapcount, which we added
    in late 2.6.14: both 32-bit and 64-bit can now handle more, and are now
    limited by their page tables.

    Signed-off-by: Hugh Dickins <hugh@veritas.com>
    ---

    mm/fremap.c | 3 ---
    1 files changed, 3 deletions(-)

    --- mm14/mm/fremap.c 2005-11-07 07:39:59.000000000 +0000
    +++ mm15/mm/fremap.c 2005-11-09 14:40:44.000000000 +0000
    @@ -87,9 +87,6 @@ int install_page(struct mm_struct *mm, s
    size = (i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
    if (!page->mapping || page->index >= size)
    goto unlock;
    - err = -ENOMEM;
    - if (page_mapcount(page) > INT_MAX/2)
    - goto unlock;

    if (pte_none(*pte) || !zap_pte(mm, vma, addr, pte))
    inc_mm_counter(mm, file_rss);
    -
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