linux-kernel - Re: [PATCH] mm, meminit: Recalculate pcpu batch and high limits after init completes -fix

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Date:   Wed, 23 Oct 2019 10:57:03 +0200
From:   David Hildenbrand <david@...hat.com>
To:     Mel Gorman <mgorman@...hsingularity.net>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Michal Hocko <mhocko@...e.com>, Vlastimil Babka <vbabka@...e.cz>,
        Thomas Gleixner <tglx@...utronix.de>,
        Matt Fleming <matt@...eblueprint.co.uk>,
        Borislav Petkov <bp@...en8.de>, Linux-MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        lkp@...el.com
Subject: Re: [PATCH] mm, meminit: Recalculate pcpu batch and high limits after
 init completes -fix

On 23.10.19 10:47, Mel Gorman wrote:
> LKP reported the following build problem from two hunks that did not
> survive the reshuffling of the series reordering.
> 
>   ld: mm/page_alloc.o: in function `page_alloc_init_late':
>   mm/page_alloc.c:1956: undefined reference to `zone_pcp_update'
> 
> This is a fix for the mmotm patch
> mm-meminit-recalculate-pcpu-batch-and-high-limits-after-init-completes.patch
> 
> Reported-by: kbuild test robot <lkp@...el.com>
> Signed-off-by: Mel Gorman <mgorman@...hsingularity.net>
> ---
>   mm/page_alloc.c | 2 --
>   1 file changed, 2 deletions(-)
> 
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index f9488efff680..12f3ce09d33d 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -8627,7 +8627,6 @@ void free_contig_range(unsigned long pfn, unsigned int nr_pages)
>   	WARN(count != 0, "%d pages are still in use!\n", count);
>   }
>   
> -#ifdef CONFIG_MEMORY_HOTPLUG
>   /*
>    * The zone indicated has a new number of managed_pages; batch sizes and percpu
>    * page high values need to be recalulated.
> @@ -8638,7 +8637,6 @@ void __meminit zone_pcp_update(struct zone *zone)
>   	__zone_pcp_update(zone);
>   	mutex_unlock(&pcp_batch_high_lock);
>   }
> -#endif
>   
>   void zone_pcp_reset(struct zone *zone)
>   {
> 

Acked-by: David Hildenbrand <david@...hat.com>

-- 

Thanks,

David / dhildenb