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[216.228.112.22]) by smtp.gmail.com with ESMTPSA id i17sm3718854pfa.2.2020.09.28.23.08.00 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Mon, 28 Sep 2020 23:08:00 -0700 (PDT) Date: Mon, 28 Sep 2020 23:02:38 -0700 From: Nicolin Chen To: Christoph Hellwig Cc: thierry.reding@gmail.com, joro@8bytes.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, digetx@gmail.com Subject: Re: [PATCH v3 2/2] iommu/tegra-smmu: Expend mutex protection range Message-ID: <20200929060238.GA26785@Asurada-Nvidia> References: <20200929045247.15596-1-nicoleotsuka@gmail.com> <20200929045247.15596-3-nicoleotsuka@gmail.com> <20200929060336.GB6564@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200929060336.GB6564@infradead.org> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 29, 2020 at 07:03:36AM +0100, Christoph Hellwig wrote: > On Mon, Sep 28, 2020 at 09:52:47PM -0700, Nicolin Chen wrote: > > This is used to protect potential race condition at use_count. > > since probes of client drivers, calling attach_dev(), may run > > concurrently. > > Shouldn't this read "expand" instead of "expend"? Oops...my poor English :) Fixing.... Thanks!