linux-kernel - Re: [PATCH -next] mm/slub: remove dummy slabinfo functions

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Date: Thu, 21 Mar 2024 21:10:31 +0800
From: xiujianfeng <xiujianfeng@...wei.com>
To: "Song, Xiongwei" <Xiongwei.Song@...driver.com>, Xiu Jianfeng
	<xiujianfeng@...weicloud.com>, "cl@...ux.com" <cl@...ux.com>,
	"penberg@...nel.org" <penberg@...nel.org>, "rientjes@...gle.com"
	<rientjes@...gle.com>, "iamjoonsoo.kim@....com" <iamjoonsoo.kim@....com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>, "vbabka@...e.cz"
	<vbabka@...e.cz>, "roman.gushchin@...ux.dev" <roman.gushchin@...ux.dev>,
	"42.hyeyoo@...il.com" <42.hyeyoo@...il.com>
CC: "linux-mm@...ck.org" <linux-mm@...ck.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] mm/slub: remove dummy slabinfo functions

Hi,

On 2024/3/21 20:20, Song, Xiongwei wrote:
> 
> 
>> From: Xiu Jianfeng <xiujianfeng@...wei.com>
>>
>> Slab has been removed since 6.5, so there is no other versions of
> 
> Removed since 6.8. The changes looks good.

Yes, thanks for correcting!

> 
> Regards,
> Xiongwei
> 
>> slabinfo_show_stats() and slabinfo_write(), then we can remove these
>> two dummy functions.
>>
>> Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com>
>> ---
>>  mm/slab.h        |  3 ---
>>  mm/slab_common.c |  2 --
>>  mm/slub.c        | 10 ----------
>>  3 files changed, 15 deletions(-)
>>
>> diff --git a/mm/slab.h b/mm/slab.h
>> index d2bc9b191222..78e205b46e19 100644
>> --- a/mm/slab.h
>> +++ b/mm/slab.h
>> @@ -496,9 +496,6 @@ struct slabinfo {
>>  };
>>
>>  void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo);
>> -void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s);
>> -ssize_t slabinfo_write(struct file *file, const char __user *buffer,
>> -                      size_t count, loff_t *ppos);
>>
>>  #ifdef CONFIG_SLUB_DEBUG
>>  #ifdef CONFIG_SLUB_DEBUG_ON
>> diff --git a/mm/slab_common.c b/mm/slab_common.c
>> index f5234672f03c..67c03d6bd26c 100644
>> --- a/mm/slab_common.c
>> +++ b/mm/slab_common.c
>> @@ -1078,7 +1078,6 @@ static void cache_show(struct kmem_cache *s, struct seq_file *m)
>>                    sinfo.limit, sinfo.batchcount, sinfo.shared);
>>         seq_printf(m, " : slabdata %6lu %6lu %6lu",
>>                    sinfo.active_slabs, sinfo.num_slabs, sinfo.shared_avail);
>> -       slabinfo_show_stats(m, s);
>>         seq_putc(m, '\n');
>>  }
>>
>> @@ -1155,7 +1154,6 @@ static const struct proc_ops slabinfo_proc_ops = {
>>         .proc_flags     = PROC_ENTRY_PERMANENT,
>>         .proc_open      = slabinfo_open,
>>         .proc_read      = seq_read,
>> -       .proc_write     = slabinfo_write,
>>         .proc_lseek     = seq_lseek,
>>         .proc_release   = seq_release,
>>  };
>> diff --git a/mm/slub.c b/mm/slub.c
>> index 1bb2a93cf7b6..cc7e68fbdbba 100644
>> --- a/mm/slub.c
>> +++ b/mm/slub.c
>> @@ -7099,14 +7099,4 @@ void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo)
>>         sinfo->objects_per_slab = oo_objects(s->oo);
>>         sinfo->cache_order = oo_order(s->oo);
>>  }
>> -
>> -void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s)
>> -{
>> -}
>> -
>> -ssize_t slabinfo_write(struct file *file, const char __user *buffer,
>> -                      size_t count, loff_t *ppos)
>> -{
>> -       return -EIO;
>> -}
>>  #endif /* CONFIG_SLUB_DEBUG */
>> --
>> 2.34.1
>>
>