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    Subject[PATCH V3 1/4] kvm: remove redundant reserved page check
    Date
    PageReserved() is already checked inside kvm_is_reserved_pfn(),
    remove it from kvm_set_pfn_dirty().

    Signed-off-by: Zhang Yi <yi.z.zhang@linux.intel.com>
    Signed-off-by: Zhang Yu <yu.c.zhang@linux.intel.com>
    ---
    virt/kvm/kvm_main.c | 8 ++------
    1 file changed, 2 insertions(+), 6 deletions(-)

    diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
    index 8b47507f..c44c406 100644
    --- a/virt/kvm/kvm_main.c
    +++ b/virt/kvm/kvm_main.c
    @@ -1690,12 +1690,8 @@ EXPORT_SYMBOL_GPL(kvm_release_pfn_dirty);

    void kvm_set_pfn_dirty(kvm_pfn_t pfn)
    {
    - if (!kvm_is_reserved_pfn(pfn)) {
    - struct page *page = pfn_to_page(pfn);
    -
    - if (!PageReserved(page))
    - SetPageDirty(page);
    - }
    + if (!kvm_is_reserved_pfn(pfn))
    + SetPageDirty(pfn_to_page(pfn));
    }
    EXPORT_SYMBOL_GPL(kvm_set_pfn_dirty);

    --
    2.7.4
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