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@xxxxxxxxxxxxx>
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