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[66.29.188.166]) by smtp.gmail.com with ESMTPSA id i193sm76888608pgc.22.2018.12.31.09.20.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 31 Dec 2018 09:20:19 -0800 (PST) Subject: Re: [PATCH] block/swim3: Fix -EBUSY error when re-opening device after unmount To: Finn Thain Cc: linuxppc-dev@lists.ozlabs.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org References: <177ead1d637f617792aa5ca2ee294d61e3d0cea2.1546235049.git.fthain@telegraphics.com.au> From: Jens Axboe Message-ID: <75422eb4-a0d7-c71d-643f-24496d86c74b@kernel.dk> Date: Mon, 31 Dec 2018 10:20:18 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <177ead1d637f617792aa5ca2ee294d61e3d0cea2.1546235049.git.fthain@telegraphics.com.au> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/30/18 10:44 PM, Finn Thain wrote: > When the block device is opened with FMODE_EXCL, ref_count is set to -1. > This value doesn't get reset when the device is closed which means the > device cannot be opened again. Fix this by checking for refcount <= 0 > in the release method. Applied, thanks. -- Jens Axboe