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    SubjectRe: [RFC PATCH 0/3] Do not wait the full timeout on congestion_wait when there is no congestion
    Hi, Wu.

    On Fri, Aug 27, 2010 at 10:21 AM, Wu Fengguang <> wrote:
    > Minchan,
    > It's much cleaner to keep the unchanged congestion_wait() and add a
    > congestion_wait_check() for converting problematic wait sites. The
    > too_many_isolated() wait is merely a protective mechanism, I won't
    > bother to improve it at the cost of more code.

    You means following as?

    while (unlikely(too_many_isolated(zone, file, sc))) {
    congestion_wait_check(BLK_RW_ASYNC, HZ/10);

    /* We are about to die and free our memory. Return now. */
    if (fatal_signal_pending(current))
    return SWAP_CLUSTER_MAX;

    > Thanks,
    > Fengguang

    Kind regards,
    Minchan Kim

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