Re: [PATCH v3] memblock: don't run loop in memblock_add_range() twice

From: Mike Rapoport
Date: Thu Oct 12 2023 - 05:25:46 EST


On Thu, Oct 05, 2023 at 11:20:19PM +0800, Yajun Deng wrote:
>
> On 2023/10/5 13:19, Mike Rapoport wrote:
>
> > I don't see this micro-optimization is worth the churn and potential bugs.
> > NAK.
>
> There are many handouts that tell people it needs to run twice in
> memblock_add_range().
>
> I think it's time to change this. I'm trying to tell people that running
> twice is unnecessary.

It might be unnecessary, but it's still simpler than the solutions you
proposed. And, again, removing the second loop is not worth the churn and
potential bugs.

--
Sincerely yours,
Mike.