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    SubjectRe: [PATCH 04/19] io-controller: Modify cfq to make use of flat elevator fair queuing
    On Thu, Jun 11, 2009 at 02:12:44PM +0800, Gui Jianfeng wrote:
    > Vivek Goyal wrote:
    > > This patch changes cfq to use fair queuing code from elevator layer.
    > >
    >
    > last_end_request in cic is of no use anymore. Get rid of it.
    >

    Thanks Gui. Queued for next posting.

    Vivek

    > Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
    > ---
    > block/cfq-iosched.c | 4 ----
    > include/linux/iocontext.h | 1 -
    > 2 files changed, 0 insertions(+), 5 deletions(-)
    >
    > diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
    > index 5871568..705e7ba 100644
    > --- a/block/cfq-iosched.c
    > +++ b/block/cfq-iosched.c
    > @@ -1170,7 +1170,6 @@ cfq_alloc_io_context(struct cfq_data *cfqd, gfp_t gfp_mask)
    > cic = kmem_cache_alloc_node(cfq_ioc_pool, gfp_mask | __GFP_ZERO,
    > q->node);
    > if (cic) {
    > - cic->last_end_request = jiffies;
    > INIT_LIST_HEAD(&cic->queue_list);
    > INIT_HLIST_NODE(&cic->cic_list);
    > cic->dtor = cfq_free_io_context;
    > @@ -1794,9 +1793,6 @@ static void cfq_completed_request(struct request_queue *q, struct request *rq)
    >
    > if (!cfq_class_idle(cfqq))
    > cfqd->last_end_request = now;
    > -
    > - if (sync)
    > - RQ_CIC(rq)->last_end_request = now;
    > }
    >
    > /*
    > diff --git a/include/linux/iocontext.h b/include/linux/iocontext.h
    > index 1fe9d78..9c4587b 100644
    > --- a/include/linux/iocontext.h
    > +++ b/include/linux/iocontext.h
    > @@ -39,7 +39,6 @@ struct cfq_io_context {
    >
    > struct io_context *ioc;
    >
    > - unsigned long last_end_request;
    > sector_t last_request_pos;
    >
    > unsigned int seek_samples;
    > --
    > 1.5.4.rc3
    >


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