linux-kernel - Re: [PATCH v3 4/4] mm/slub: correct the default value of slub_min

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Message-ID: <043c49e4-2665-318a-5acb-7081768bc1f3@suse.cz>
Date:   Wed, 13 Dec 2023 12:23:26 +0100
From:   Vlastimil Babka <vbabka@...e.cz>
To:     "Song, Xiongwei" <Xiongwei.Song@...driver.com>,
        "sxwjean@...com" <sxwjean@...com>,
        "42.hyeyoo@...il.com" <42.hyeyoo@...il.com>,
        "cl@...ux.com" <cl@...ux.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>
Cc:     "penberg@...nel.org" <penberg@...nel.org>,
        "rientjes@...gle.com" <rientjes@...gle.com>,
        "iamjoonsoo.kim@....com" <iamjoonsoo.kim@....com>,
        "roman.gushchin@...ux.dev" <roman.gushchin@...ux.dev>,
        "corbet@....net" <corbet@....net>,
        "keescook@...omium.org" <keescook@...omium.org>,
        "arnd@...db.de" <arnd@...db.de>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 4/4] mm/slub: correct the default value of
 slub_min_objects in doc

On 12/9/23 14:59, Song, Xiongwei wrote:
> I didn't change description as you mentioned because slab_min_objects doesn't
> save the calculated value based on the number of processors, but the local
> variables min_objects doesn't.

Hm I think that's less helpful. The user/admin who will read the doc doesn't
care about implementation details such as value of a variable, but what's
the actual observable default behavior, and that is still the automatic
scaling, right?

> Regards,
> Xiongwei