Re: [patch 2/4] Timerfd v3 - new timerfd API

[Andrew Morton]

On Sun, 25 Nov 2007 14:14:19 -0800 Davide Libenzi <davidel@xxxxxxxxxxxxxxx> wrote:

> +static struct file *timerfd_fget(int fd)
> +{
> +	struct file *file;
> +
> +	file = fget(fd);
> +	if (!file)
> +		return ERR_PTR(-EBADF);
> +	if (file->f_op != &timerfd_fops) {
> +		fput(file);
> +		return ERR_PTR(-EINVAL);
> +	}
> +
> +	return file;
> +}

I suppose we could use fget_light() in here sometime.  It is significantly
quicker in microbenchmarks.  Or it was - nobody has checked that in a few
years afaik.
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