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From:   Leon Romanovsky <leon@kernel.org>
To:     jgg@ziepe.ca, Yuanyuan Zhong <yzhong@purestorage.com>
Cc:     cachen@purestorage.com, linux-rdma@vger.kernel.org,
        linux-kernel@vger.kernel.org
In-Reply-To: <20230629213248.3184245-1-yzhong@purestorage.com>
References: <20230629213248.3184245-1-yzhong@purestorage.com>
Subject: Re: [PATCH 0/1] RDMA/mlx5: align MR mem allocation size to power-of-two
Message-Id: <168916382400.1207710.3116190060320574787.b4-ty@kernel.org>
Date:   Wed, 12 Jul 2023 15:10:24 +0300
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On Thu, 29 Jun 2023 15:32:47 -0600, Yuanyuan Zhong wrote:
> Recently I noticed the mlx5_alloc_priv_descs() do many allocations from
> kmalloc-8k. It's called from following chain:
> cma_cm_event_handler => nvme_rdma_cm_handler => nvme_rdma_create_queue_ib
> => ib_mr_pool_init => ib_alloc_mr => __mlx5_ib_alloc_mr
> => _mlx5_alloc_mkey_descs
> 
> When the nvme-rdma asks to allocate memory regions that support maximum 257
> sg entries, the real MR memory allocation size is slightly bigger than 2048.
> 
> [...]

Applied, thanks!

[1/1] RDMA/mlx5: align MR mem allocation size to power-of-two
      https://git.kernel.org/rdma/rdma/c/52b4bdd28c861e

Best regards,
-- 
Leon Romanovsky <leon@kernel.org>