Re: + fix-print-order-in-show_free_areas.patch added to -mm tree

[Michal Hocko]

JFTR. Joe, has already noticed this
http://lkml.kernel.org/r/2aaf6f1701ee78582743d91359018689d5826e82.1489628459.git.joe@xxxxxxxxxxx
and I have requested to split out the fix from the rest of the
whitespace noise
http://lkml.kernel.org/r/20170316105733.GC30508@xxxxxxxxxxxxxx
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@xxxxxxxx>
> 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@xxxxxxxx
> Signed-off-by: Alexander Polyakov <apolyakov@xxxxxxxxx>
> Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
> Cc: Vlastimil Babka <vbabka@xxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxx>
> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

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@xxxxxxxx>

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@xxxxxxxx are
> 
> fix-print-order-in-show_free_areas.patch
> 

-- 
Michal Hocko
SUSE Labs