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Date:   Tue, 4 Apr 2017 10:57:26 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     akpm@...ux-foundation.org
Cc:     apolyakov@...et.ru, apolyakov@...et.com,
        mgorman@...hsingularity.net, vbabka@...e.cz,
        mm-commits@...r.kernel.org, linux-mm@...ck.org,
        LKML <linux-kernel@...r.kernel.org>,
        Joe Perches <joe@...ches.com>
Subject: Re: + fix-print-order-in-show_free_areas.patch added to -mm tree

JFTR. Joe, has already noticed this
http://lkml.kernel.org/r/2aaf6f1701ee78582743d91359018689d5826e82.1489628459.git.joe@perches.com
and I have requested to split out the fix from the rest of the
whitespace noise
http://lkml.kernel.org/r/20170316105733.GC30508@dhcp22.suse.cz
but Joe hasn't really followed up and I didn't get to do it myself.

On Mon 03-04-17 15:11:17, Andrew Morton wrote:
> From: Alexander Polakov <apolyakov@...et.ru>
> Subject: mmpage_alloc.c: fix print order in show_free_areas()
> 
> Fixes: 11fb998986a72a ("mm: move most file-based accounting to the node")
> Link: http://lkml.kernel.org/r/1490377730.30219.2.camel@beget.ru
> Signed-off-by: Alexander Polyakov <apolyakov@...et.com>
> Cc: Mel Gorman <mgorman@...hsingularity.net>
> Cc: Vlastimil Babka <vbabka@...e.cz>
> Cc: Michal Hocko <mhocko@...e.com>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>

Even though this cannot cause any crash or misbehaving it is still
confusing enough to be worth backporting to stable

Cc: stable # 4.8+
Acked-by: Michal Hocko <mhocko@...e.com>

Thanks!

> ---
> 
>  mm/page_alloc.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff -puN mm/page_alloc.c~fix-print-order-in-show_free_areas mm/page_alloc.c
> --- a/mm/page_alloc.c~fix-print-order-in-show_free_areas
> +++ a/mm/page_alloc.c
> @@ -4519,13 +4519,13 @@ void show_free_areas(unsigned int filter
>  			K(node_page_state(pgdat, NR_FILE_MAPPED)),
>  			K(node_page_state(pgdat, NR_FILE_DIRTY)),
>  			K(node_page_state(pgdat, NR_WRITEBACK)),
> +			K(node_page_state(pgdat, NR_SHMEM)),
>  #ifdef CONFIG_TRANSPARENT_HUGEPAGE
>  			K(node_page_state(pgdat, NR_SHMEM_THPS) * HPAGE_PMD_NR),
>  			K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED)
>  					* HPAGE_PMD_NR),
>  			K(node_page_state(pgdat, NR_ANON_THPS) * HPAGE_PMD_NR),
>  #endif
> -			K(node_page_state(pgdat, NR_SHMEM)),
>  			K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
>  			K(node_page_state(pgdat, NR_UNSTABLE_NFS)),
>  			node_page_state(pgdat, NR_PAGES_SCANNED),
> _
> 
> Patches currently in -mm which might be from apolyakov@...et.ru are
> 
> fix-print-order-in-show_free_areas.patch
> 

-- 
Michal Hocko
SUSE Labs

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