linux-kernel - Re: [RFC PATCH] scsi, block: fix duplicate bdi name registration crashes

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Message-ID: <20170201080801.GB29170@lst.de>
Date:   Wed, 1 Feb 2017 09:08:01 +0100
From:   Christoph Hellwig <hch@....de>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     Christoph Hellwig <hch@....de>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Jens Axboe <axboe@...nel.dk>, linux-block@...r.kernel.org,
        linux-scsi <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        Bart Van Assche <bart.vanassche@...disk.com>,
        Omar Sandoval <osandov@...ndov.com>
Subject: Re: [RFC PATCH] scsi, block: fix duplicate bdi name registration
        crashes

On Mon, Jan 30, 2017 at 12:57:05PM -0800, Dan Williams wrote:
> 
> struct kref {
>         atomic_t refcount;
> };
> 
> ...so what do we gain by open coding kref_get() and kref_put()?

A much less ugly calling convention.