On Wed, Aug 14, 2013 at 12:45:41PM +0800, Xishi Qiu wrote: > A large free page buddy block will continue many times, so if the page > is free, skip the whole page buddy block instead of one page. > > Signed-off-by: Xishi Qiu <[email protected]>
page_order cannot be used unless zone->lock is held which is not held in this path. Acquiring the lock would prevent parallel allocations from the buddy allocator (per-cpu allocator would be ok except for refills). I expect it would not be a good tradeoff to acquire the lock just to use page_order. Nak. -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
