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    SubjectRe: [PATCH 3/4] hugetlb, rmap: fix confusing page locking in hugetlb_cow()
    On 09/10/2010 12:23 AM, Naoya Horiguchi wrote:
    > if(!trylock_page) block in avoidcopy path of hugetlb_cow() looks confusing
    > and is buggy. Originally this trylock_page() is intended to make sure
    > that old_page is locked even when old_page != pagecache_page, because then
    > only pagecache_page is locked.
    > This patch fixes it by moving page locking into hugetlb_fault().
    >
    > Signed-off-by: Naoya Horiguchi<n-horiguchi@ah.jp.nec.com>

    Acked-by: Rik van Riel <riel@redhat.com>

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