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Re: [PATCH 07/14] blk-mq: Cleanup a loop exit condition

From Omar Sandoval <osandov@osandov.com>
Newsgroups linux.kernel
Subject Re: [PATCH 07/14] blk-mq: Cleanup a loop exit condition
Date 2016-09-19 21:10 +0200
Message-ID <sjc6Z-Xi-5@gated-at.bofh.it> (permalink)
References <siERH-5bE-3@gated-at.bofh.it> <siF1n-5f1-9@gated-at.bofh.it>
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On Sun, Sep 18, 2016 at 09:37:17AM +0200, Alexander Gordeev wrote:
> CC: linux-block@vger.kernel.org
> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>

So set->nr_hw_queues is always >= q->nr_hw_queues, right?

Reviewed-by: Omar Sandoval <osandov@fb.com>

> ---
>  block/blk-mq.c | 9 +++------
>  1 file changed, 3 insertions(+), 6 deletions(-)
> 
> diff --git a/block/blk-mq.c b/block/blk-mq.c
> index 9fbfe31..b2ef8f5 100644
> --- a/block/blk-mq.c
> +++ b/block/blk-mq.c
> @@ -1681,16 +1681,13 @@ static void blk_mq_exit_hctx(struct request_queue *q,
>  }
>  
>  static void blk_mq_exit_hw_queues(struct request_queue *q,
> -		struct blk_mq_tag_set *set, int nr_queue)
> +		struct blk_mq_tag_set *set)
>  {
>  	struct blk_mq_hw_ctx *hctx;
>  	unsigned int i;
>  
> -	queue_for_each_hw_ctx(q, hctx, i) {
> -		if (i == nr_queue)
> -			break;
> +	queue_for_each_hw_ctx(q, hctx, i)
>  		blk_mq_exit_hctx(q, set, hctx, i);
> -	}
>  }
>  
>  static void blk_mq_free_hw_queues(struct request_queue *q,
> @@ -2124,7 +2121,7 @@ void blk_mq_free_queue(struct request_queue *q)
>  
>  	blk_mq_del_queue_tag_set(q);
>  
> -	blk_mq_exit_hw_queues(q, set, set->nr_hw_queues);
> +	blk_mq_exit_hw_queues(q, set);
>  	blk_mq_free_hw_queues(q, set);
>  }
>  
> -- 
> 1.8.3.1
> 
> --
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-- 
Omar

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Thread

[PATCH 00/14] blk-mq: Minor fixes and cleanups Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:40 +0200
  [PATCH 14/14] blk-mq: Set flush_start_tag to BLK_MQ_MAX_DEPTH Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:40 +0200
  [PATCH 01/14] blk-mq: Fix memory leaks on queue cleanup Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:40 +0200
    Re: [PATCH 01/14] blk-mq: Fix memory leaks on queue cleanup Christoph Hellwig <hch@infradead.org> - 2016-09-19 16:00 +0200
  [PATCH 04/14] blk-mq: Do not limit number of queues to 'nr_cpu_ids' in allocations Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:40 +0200
    Re: [PATCH 04/14] blk-mq: Do not limit number of queues to  'nr_cpu_ids' in allocations Omar Sandoval <osandov@osandov.com> - 2016-09-19 19:50 +0200
      Re: [PATCH 04/14] blk-mq: Do not limit number of queues to  'nr_cpu_ids' in allocations Alexander Gordeev <agordeev@redhat.com> - 2016-09-20 13:40 +0200
        Re: [PATCH 04/14] blk-mq: Do not limit number of queues to  'nr_cpu_ids' in allocations Omar Sandoval <osandov@osandov.com> - 2016-09-20 19:30 +0200
  [PATCH 11/14] blk-mq: Move hardware context init code into single location Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:40 +0200
  [PATCH 02/14] blk-mq: Fix a potential NULL pointer assignment to hctx tags Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:40 +0200
    Re: [PATCH 02/14] blk-mq: Fix a potential NULL pointer assignment to  hctx tags Omar Sandoval <osandov@osandov.com> - 2016-09-19 20:40 +0200
  [PATCH 03/14] block: Get rid of unused request_queue::nr_queues member Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:40 +0200
    Re: [PATCH 03/14] block: Get rid of unused request_queue::nr_queues  member Omar Sandoval <osandov@osandov.com> - 2016-09-19 20:40 +0200
  [PATCH 05/14] blk-mq: Remove a redundant assignment Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:50 +0200
    Re: [PATCH 05/14] blk-mq: Remove a redundant assignment Omar Sandoval <osandov@osandov.com> - 2016-09-19 20:40 +0200
  [PATCH 07/14] blk-mq: Cleanup a loop exit condition Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:50 +0200
    Re: [PATCH 07/14] blk-mq: Cleanup a loop exit condition Omar Sandoval <osandov@osandov.com> - 2016-09-19 21:10 +0200
      Re: [PATCH 07/14] blk-mq: Cleanup a loop exit condition Alexander Gordeev <agordeev@redhat.com> - 2016-09-20 13:30 +0200
  [PATCH 08/14] blk-mq: Get rid of unnecessary blk_mq_free_hw_queues() Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:50 +0200
  [PATCH 09/14] blk-mq: Move duplicating code to blk_mq_exit_hctx() Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:50 +0200
    Re: [PATCH 09/14] blk-mq: Move duplicating code to blk_mq_exit_hctx() Omar Sandoval <osandov@osandov.com> - 2016-09-19 20:00 +0200
  [PATCH 12/14] blk-mq: Rework blk_mq_init_hctx() function Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:50 +0200
  [PATCH 06/14] blk-mq: Fix hardware context data node selection Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:50 +0200
    Re: [PATCH 06/14] blk-mq: Fix hardware context data node selection Omar Sandoval <osandov@osandov.com> - 2016-09-19 21:00 +0200
  [PATCH 13/14] blk-mq: Pair blk_mq_hctx_kobj_init() with blk_mq_hctx_kobj_put() Alexander Gordeev <agordeev@redhat.com> - 2016-09-18 09:50 +0200

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