linux-kernel - Re: [PATCH v2 6/8] blk-mq: Rework blk_mq_realloc_hw

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Date:   Thu, 6 Oct 2016 00:47:26 +0300
From:   Sagi Grimberg <sagi@...mberg.me>
To:     Alexander Gordeev <agordeev@...hat.com>,
        linux-kernel@...r.kernel.org
Cc:     linux-block@...r.kernel.org
Subject: Re: [PATCH v2 6/8] blk-mq: Rework blk_mq_realloc_hw_ctxs()


> @@ -1908,33 +1909,36 @@ static void blk_mq_realloc_hw_ctxs(struct blk_mq_tag_set *set,
>  		if (node == NUMA_NO_NODE)
>  			node = set->numa_node;
>
> -		hctxs[i] = kzalloc_node(sizeof(struct blk_mq_hw_ctx),
> -					GFP_KERNEL, node);
> -		if (!hctxs[i])
> +		hctx = kzalloc_node(sizeof(*hctx), GFP_KERNEL, node);
> +		if (!hctx)
>  			break;
>
> -		if (blk_mq_init_hctx(q, set, hctxs[i], i, node)) {
> -			kfree(hctxs[i]);
> -			hctxs[i] = NULL;
> +		if (blk_mq_init_hctx(q, set, hctx, i, node)) {
> +			kfree(hctx);
>  			break;
>  		}
> -		blk_mq_hctx_kobj_init(hctxs[i]);
> +
> +		blk_mq_hctx_kobj_init(hctx);
> +		hctxs[i] = hctx;
>  	}
>  	for (j = i; j < q->nr_hw_queues; j++) {
> -		struct blk_mq_hw_ctx *hctx = hctxs[j];
> +		hctx = hctxs[i];

Didn't you mean hctx[j]?