linux-kernel - Re: [RFC 07/26] mm, slub: return slab page from get

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Message-ID: <a1505470-e941-b1cc-05a9-4d4795a7cca4@suse.cz>
Date:   Tue, 8 Jun 2021 12:48:52 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Christoph Lameter <cl@...two.de>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        David Rientjes <rientjes@...gle.com>,
        Pekka Enberg <penberg@...nel.org>,
        Joonsoo Kim <iamjoonsoo.kim@....com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Jann Horn <jannh@...gle.com>
Subject: Re: [RFC 07/26] mm, slub: return slab page from get_partial() and set
 c->page afterwards

On 5/25/21 11:12 AM, Christoph Lameter wrote:
> On Tue, 25 May 2021, Vlastimil Babka wrote:
> 
>> The function get_partial() finds a suitable page on a partial list, acquires
>> and returns its freelist and assigns the page pointer to kmem_cache_node.
> 	in kmem_cache_cpu ??
> 
>> In later patch we will need more control over the kmem_cache_node assignment,
> 
> kmem_cache_cpu?
> 
>> so instead return the page pointer to get_partial()'s caller and assign it
>> there. No functional change as all of this still happens with disabled irq.
> 
> Instead of passing a kmem_cache_cpu pointer pass a pointer to a pointer to
> a page ....

You're right, confused the two structures here. Fixed, thanks.