Re: [PATCH v8 04/15] futex: Allow automatic allocation of process wide futex hash.

From: Peter Zijlstra
Date: Mon Feb 03 2025 - 09:50:34 EST


On Mon, Feb 03, 2025 at 02:59:24PM +0100, Sebastian Andrzej Siewior wrote:
> Allocate a default futex hash if a task forks its first thread.

This makes it so that private futexes are *always* on the mm local hash;
there is no way to disable this.

This seems somewhat extreme.