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Date:   Wed, 5 Aug 2020 16:29:24 +0800
From:   Baoquan He <bhe@redhat.com>
To:     Mike Rapoport <rppt@kernel.org>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.org>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
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        Hari Bathini <hbathini@linux.ibm.com>,
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        Max Filippov <jcmvbkbc@gmail.com>,
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        Mike Rapoport <rppt@linux.ibm.com>,
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Subject: Re: [PATCH v2 15/17] memblock: remove unused memblock_mem_size()
Message-ID: <20200805082924.GV10792@MiWiFi-R3L-srv>
References: <20200802163601.8189-1-rppt@kernel.org>
 <20200802163601.8189-16-rppt@kernel.org>
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On 08/02/20 at 07:35pm, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
> 
> The only user of memblock_mem_size() was x86 setup code, it is gone now and
> memblock_mem_size() funciton can be removed.
> 
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
> ---
>  include/linux/memblock.h |  1 -
>  mm/memblock.c            | 15 ---------------
>  2 files changed, 16 deletions(-)
> 
> diff --git a/include/linux/memblock.h b/include/linux/memblock.h
> index d70c2835e913..ec2fd8f32a19 100644
> --- a/include/linux/memblock.h
> +++ b/include/linux/memblock.h
> @@ -450,7 +450,6 @@ static inline bool memblock_bottom_up(void)
>  
>  phys_addr_t memblock_phys_mem_size(void);
>  phys_addr_t memblock_reserved_size(void);
> -phys_addr_t memblock_mem_size(unsigned long limit_pfn);
>  phys_addr_t memblock_start_of_DRAM(void);
>  phys_addr_t memblock_end_of_DRAM(void);
>  void memblock_enforce_memory_limit(phys_addr_t memory_limit);
> diff --git a/mm/memblock.c b/mm/memblock.c
> index c1a4c8798973..48d614352b25 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -1656,21 +1656,6 @@ phys_addr_t __init_memblock memblock_reserved_size(void)
>  	return memblock.reserved.total_size;
>  }
>  
> -phys_addr_t __init memblock_mem_size(unsigned long limit_pfn)
> -{
> -	unsigned long pages = 0;
> -	unsigned long start_pfn, end_pfn;
> -	int i;
> -
> -	for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL) {
> -		start_pfn = min_t(unsigned long, start_pfn, limit_pfn);
> -		end_pfn = min_t(unsigned long, end_pfn, limit_pfn);
> -		pages += end_pfn - start_pfn;
> -	}
> -
> -	return PFN_PHYS(pages);
> -}

Reviewed-by: Baoquan He <bhe@redhat.com>