linux-kernel - Re: [PATCH v2 3/3] mm: add WQ_PERCPU to alloc

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Message-ID: <20260124222135.XyGv6OqY@linutronix.de>
Date: Sat, 24 Jan 2026 23:21:35 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: Marco Crivellari <marco.crivellari@...e.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Tejun Heo <tj@...nel.org>, Lai Jiangshan <jiangshanlai@...il.com>,
	Frederic Weisbecker <frederic@...nel.org>,
	Michal Hocko <mhocko@...e.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH v2 3/3] mm: add WQ_PERCPU to alloc_workqueue users

On 2026-01-13 12:46:30 [+0100], Marco Crivellari wrote:
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -8542,7 +8542,9 @@ void __init kmem_cache_init(void)
>  
>  void __init kmem_cache_init_late(void)
>  {
> -	flushwq = alloc_workqueue("slub_flushwq", WQ_MEM_RECLAIM, 0);
> +#ifndef CONFIG_SLUB_TINY

This ifndef does not belong here.

> +	flushwq = alloc_workqueue("slub_flushwq", WQ_MEM_RECLAIM | WQ_PERCPU,
> +				  0);
>  	WARN_ON(!flushwq);
>  }

Without the ifndef above I am happy with
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>

Sebastian