linux-kernel - Re: [PATCH] mm/memcg: fix obsolete function name in mem_cgroup

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Date:   Mon, 24 Jul 2023 09:52:43 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     Matthew Wilcox <willy@...radead.org>
CC:     <akpm@...ux-foundation.org>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>, <cgroups@...r.kernel.org>
Subject: Re: [PATCH] mm/memcg: fix obsolete function name in
 mem_cgroup_protection()

On 2023/7/24 4:37, Matthew Wilcox wrote:
> On Sun, Jul 23, 2023 at 11:25:38AM +0800, Miaohe Lin wrote:
>> @@ -582,9 +582,9 @@ static inline void mem_cgroup_protection(struct mem_cgroup *root,
>>  	/*
>>  	 * There is no reclaim protection applied to a targeted reclaim.
>>  	 * We are special casing this specific case here because
>> -	 * mem_cgroup_protected calculation is not robust enough to keep
>> -	 * the protection invariant for calculated effective values for
>> -	 * parallel reclaimers with different reclaim target. This is
>> +	 * mem_cgroup_calculate_protection calculation is not robust enough
>> +	 * to keep the protection invariant for calculated effective values
>> +	 * for parallel reclaimers with different reclaim target. This is
>>  	 * especially a problem for tail memcgs (as they have pages on LRU)
>>  	 * which would want to have effective values 0 for targeted reclaim
>>  	 * but a different value for external reclaim.
> 
> This reads a little awkwardly now.  How about:
> 
>  	 * We are special casing this specific case here because
> -	 * mem_cgroup_protected calculation is not robust enough to keep
> +	 * mem_cgroup_calculate_protection is not robust enough to keep

Sounds better. Will do it in v2.

Thanks.