Re: [PATCH v5 04/12] ltp/fsx.c: Add atomic writes support to fsx

[John Garry]

On 05/09/2025 17:29, Ojaswin Mujoo wrote:
> > > +
> > > +/*
> > > + * Round down n to nearest power of 2.
> > > + * If n is already a power of 2, return n;
> > > + */
> > > +static int rounddown_pow_of_2(int n) {
> > > +	int i = 0;
> > > +
> > > +	if (is_power_of_2(n))
> > > +		return n;
> > > +
> > > +	for (; (1 << i) < n; i++);
> > > +
> > > +	return 1 << (i - 1);
> > Is this the neatest way to do this?
> Well it is a straigforward o(logn) way. Do you have something else in
> mind?

check what the kernel does is always a good place to start...

Thanks