linux-kernel - Re: [Xen-devel] [PATCH v2 3/3] xen/blkback: Use refcount

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Message-ID: <20190813082000.shprs2ci33v5eapd@Air-de-Roger>
Date:   Tue, 13 Aug 2019 10:20:00 +0200
From:   Roger Pau Monné <roger.pau@...rix.com>
To:     Chuhong Yuan <hslester96@...il.com>
CC:     Jens Axboe <axboe@...nel.dk>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        <linux-kernel@...r.kernel.org>, <linux-block@...r.kernel.org>,
        <xen-devel@...ts.xenproject.org>
Subject: Re: [Xen-devel] [PATCH v2 3/3] xen/blkback: Use refcount_t for
 refcount

On Tue, Aug 13, 2019 at 02:16:50PM +0800, Chuhong Yuan wrote:
> Reference counters are preferred to use refcount_t instead of
> atomic_t.
> This is because the implementation of refcount_t can prevent
> overflows and detect possible use-after-free.
> So convert atomic_t ref counters to refcount_t.
> 
> Signed-off-by: Chuhong Yuan <hslester96@...il.com>

Acked-by: Roger Pau Monné <roger.pau@...rix.com>

Thanks, Roger.