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Date: Mon, 6 Apr 2015 07:49:51 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Ming Lei <ming.lei@canonical.com>
Cc: Jens Axboe <axboe@kernel.dk>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
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Subject: Re: [PATCH 2/6] block: loop: don't hold lo_ctl_mutex in lo_open
Message-ID: <20150406144951.GB2703@infradead.org>
References: <1428218688-4092-1-git-send-email-ming.lei@canonical.com>
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On Mon, Apr 06, 2015 at 12:28:22AM +0800, Ming Lei wrote:
> Another simpler way is to make lo_refcnt as atomic_t and remove
> lo_ctrl_mutext in lo_open(), and freeze request queue during clearing
> fd, and better to freeze queue during setting fd too, so will update in
> v1 with this way.

Using an atomic_t sounds good to me.