Re: [PATCH] block: Remove the extra check in queue_requests_store.

From: Jens Axboe
Date: Tue Apr 19 2011 - 07:51:25 EST


On 2011-04-19 10:26, Tao Ma wrote:
> From: Tao Ma <boyu.mt@xxxxxxxxxx>
>
> In queue_requests_store, the code looks like
> if (rl->count[BLK_RW_SYNC] >= q->nr_requests) {
> blk_set_queue_full(q, BLK_RW_SYNC);
> } else if (rl->count[BLK_RW_SYNC]+1 <= q->nr_requests) {
> blk_clear_queue_full(q, BLK_RW_SYNC);
> wake_up(&rl->wait[BLK_RW_SYNC]);
> }
> If we don't satify the situation of "if", we can get that
> rl->count[BLK_RW_SYNC} < q->nr_quests. It is the same as
> rl->count[BLK_RW_SYNC]+1 <= q->nr_requests.
> All the "else" should satisfy the "else if" check so it isn't
> needed actually.

Thanks, applied.

--
Jens Axboe

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