linux-kernel - Re: [RFC v5][PATCH 2/8] General infrastructure for checkpoint restart

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Date:	Mon, 15 Sep 2008 10:54:20 -0700
From:	Dave Hansen <dave@...ux.vnet.ibm.com>
To:	Oren Laadan <orenl@...columbia.edu>
Cc:	arnd@...db.de, jeremy@...p.org, linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org
Subject: Re: [RFC v5][PATCH 2/8] General infrastructure for checkpoint
	restart

On Sat, 2008-09-13 at 19:06 -0400, Oren Laadan wrote:
> 
> +int cr_read_obj_type(struct cr_ctx *ctx, void *buf, int n, int type)
> +{
> +       struct cr_hdr h;
> +       int ret;
> +
> +       ret = cr_read_obj(ctx, &h, buf, n);
> +       if (!ret) {
> +               if (h.type == type)
> +                       ret = h.parent;
> +               else
> +                       ret = -EINVAL;
> +       }
> +       return ret;
> +}

This one has been bugging me a bit.  This adds one net line of code and
I think it's much easier to read:

{
	struct cr_hdr h;
	int ret;

	ret = cr_read_obj(ctx, &h, buf, n);
	if (ret)
		return ret;

	ret = -EINVAL;	
	if (h.type == type)
		ret = h.parent;

	return ret;
}                     

-- Dave

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