linux-kernel - Re: [PATCH] mm/hotplug: fix notification in offline error path

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Date:   Thu, 14 Mar 2019 08:56:28 +0100
From:   Oscar Salvador <osalvador@...e.de>
To:     Qian Cai <cai@....pw>
Cc:     akpm@...ux-foundation.org, mhocko@...nel.org,
        anshuman.khandual@....com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/hotplug: fix notification in offline error path

On Wed, Mar 13, 2019 at 05:09:39PM -0400, Qian Cai wrote:
> Fixes: 7960509329c2 ("mm, memory_hotplug: print reason for the offlining failure")
> Signed-off-by: Qian Cai <cai@....pw>

Reviewed-by: Oscar Salvador <osalvador@...e.de>

> ---
>  mm/memory_hotplug.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
> index 8ffe844766da..1559c1605072 100644
> --- a/mm/memory_hotplug.c
> +++ b/mm/memory_hotplug.c
> @@ -1703,12 +1703,12 @@ static int __ref __offline_pages(unsigned long start_pfn,
>  
>  failed_removal_isolated:
>  	undo_isolate_page_range(start_pfn, end_pfn, MIGRATE_MOVABLE);
> +	memory_notify(MEM_CANCEL_OFFLINE, &arg);
>  failed_removal:
>  	pr_debug("memory offlining [mem %#010llx-%#010llx] failed due to %s\n",
>  		 (unsigned long long) start_pfn << PAGE_SHIFT,
>  		 ((unsigned long long) end_pfn << PAGE_SHIFT) - 1,
>  		 reason);
> -	memory_notify(MEM_CANCEL_OFFLINE, &arg);
>  	/* pushback to free area */
>  	mem_hotplug_done();
>  	return ret;
> -- 
> 2.17.2 (Apple Git-113)
> 

-- 
Oscar Salvador
SUSE L3