Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Message-ID: <0f330796-480e-0b78-c2f4-006eac38d7df@suse.cz>
Date:   Mon, 2 Jan 2023 09:39:28 +0100
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.6.1
Subject: Re: [PATCH V2] mm/slab: remove unused slab_early_init
Content-Language: en-US
To:     gouhao@uniontech.com, cl@linux.com, penberg@kernel.org,
        rientjes@google.com, iamjoonsoo.kim@lge.com,
        akpm@linux-foundation.org, roman.gushchin@linux.dev,
        42.hyeyoo@gmail.com, keescook@chromium.org
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        linux-hardening@vger.kernel.org, mingo@elte.hu
References: <20221218123127.23810-1-gouhao@uniontech.com>
From:   Vlastimil Babka <vbabka@suse.cz>
In-Reply-To: <20221218123127.23810-1-gouhao@uniontech.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Precedence: bulk

On 12/18/22 13:31, gouhao@uniontech.com wrote:
> From: Gou Hao <gouhao@uniontech.com>
> 
> 'slab_early_init' was introduced by 'commit e0a42726794f
> ("[PATCH] mm/slab.c: fix early init assumption")', this
> flag was used to prevent off-slab caches being created
> so early during bootup.
> 
> The only user of 'slab_early_init' was removed in 'commit
>  3217fd9bdf00 ("mm/slab: make criteria for off slab
> determination robust and simple")'.
> 
> Signed-off-by: Gou Hao <gouhao@uniontech.com>
> Acked-by: Hyeonggon Yoo <42.hyeyoo@gmail.com>

Thanks, added to slab/for-6.3/cleanups

> ---
>  mm/slab.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/mm/slab.c b/mm/slab.c
> index 7a269db050ee..ede1f29fd81c 100644
> --- a/mm/slab.c
> +++ b/mm/slab.c
> @@ -220,7 +220,6 @@ static inline void fixup_objfreelist_debug(struct kmem_cache *cachep,
>  static inline void fixup_slab_list(struct kmem_cache *cachep,
>  				struct kmem_cache_node *n, struct slab *slab,
>  				void **list);
> -static int slab_early_init = 1;
>  
>  #define INDEX_NODE kmalloc_index(sizeof(struct kmem_cache_node))
>  
> @@ -1249,8 +1248,6 @@ void __init kmem_cache_init(void)
>  	slab_state = PARTIAL_NODE;
>  	setup_kmalloc_cache_index_table();
>  
> -	slab_early_init = 0;
> -
>  	/* 5) Replace the bootstrap kmem_cache_node */
>  	{
>  		int nid;