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Message-ID: <c0542b0e-4b36-7774-ec6f-7c54a3ec2b2b@suse.cz>
Date: Tue, 5 Dec 2023 10:39:01 +0100
From: Vlastimil Babka <vbabka@...e.cz>
To: Chengming Zhou <chengming.zhou@...ux.dev>,
"Christoph Lameter (Ampere)" <cl@...ux.com>
Cc: penberg@...nel.org, rientjes@...gle.com, iamjoonsoo.kim@....com,
akpm@...ux-foundation.org, roman.gushchin@...ux.dev,
42.hyeyoo@...il.com, linux-mm@...ck.org,
linux-kernel@...r.kernel.org,
Chengming Zhou <zhouchengming@...edance.com>
Subject: Re: [PATCH v5 9/9] slub: Update frozen slabs documentations in the
source
On 12/5/23 07:06, Chengming Zhou wrote:
> On 2023/12/5 05:41, Christoph Lameter (Ampere) wrote:
>> On Thu, 2 Nov 2023, chengming.zhou@...ux.dev wrote:
>>
>>> From: Chengming Zhou <zhouchengming@...edance.com>
>>>
>>> The current updated scheme (which this series implemented) is:
>>> - node partial slabs: PG_Workingset && !frozen
>>> - cpu partial slabs: !PG_Workingset && !frozen
>>> - cpu slabs: !PG_Workingset && frozen
>>> - full slabs: !PG_Workingset && !frozen
>>
>> The above would be good to include in the comments.
>>
>> Acked-by: Christoph Lameter (Ampere) <cl@...ux.com>
>>
>
> Thanks for your review and suggestion!
>
> Maybe something like this:
Thanks, added.
> diff --git a/mm/slub.c b/mm/slub.c
> index 623c17a4cdd6..21f88bd9c16b 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -93,6 +93,12 @@
> * by clearing the PG_workingset flag when moving out of the node
> * partial list. Please see __slab_free() for more details.
> *
> + * To sum up, the current scheme is:
> + * - node partial slab: PG_Workingset && !frozen
> + * - cpu partial slab: !PG_Workingset && !frozen
> + * - cpu slab: !PG_Workingset && frozen
> + * - full slab: !PG_Workingset && !frozen
> + *
> * list_lock
> *
> * The list_lock protects the partial and full list on each node and
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