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Re: [Xen-devel] [PATCH v1 2/8] mm: convert PG_balloon to PG_offline


  • To: linux-mm@xxxxxxxxx
  • From: David Hildenbrand <david@xxxxxxxxxx>
  • Date: Mon, 19 Nov 2018 17:06:12 +0100
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  • Cc: Michal Hocko <mhocko@xxxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, pv-drivers@xxxxxxxxxx, Alexander Duyck <alexander.h.duyck@xxxxxxxxxxxxxxx>, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>, Matthew Wilcox <willy@xxxxxxxxxxxxx>, Konstantin Khlebnikov <koct9i@xxxxxxxxx>, David Rientjes <rientjes@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Alexey Dobriyan <adobriyan@xxxxxxxxx>, linux-pm@xxxxxxxxxxxxxxx, Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Vlastimil Babka <vbabka@xxxxxxx>, Kazuhito Hagio <k-hagio@xxxxxxxxxxxxx>, Christian Hansen <chansen3@xxxxxxxxx>, kexec-ml <kexec@xxxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Miles Chen <miles.chen@xxxxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, devel@xxxxxxxxxxxxxxxxxxxxxx, Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>, "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 19 Nov 2018 16:06:37 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
  • Openpgp: preference=signencrypt

>  
> diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
> index 50ce1bddaf56..f91da3d0a67e 100644
> --- a/include/linux/page-flags.h
> +++ b/include/linux/page-flags.h
> @@ -670,7 +670,7 @@ PAGEFLAG_FALSE(DoubleMap)
>  #define PAGE_TYPE_BASE       0xf0000000
>  /* Reserve           0x0000007f to catch underflows of page_mapcount */
>  #define PG_buddy     0x00000080
> -#define PG_balloon   0x00000100
> +#define PG_offline   0x00000100
>  #define PG_kmemcg    0x00000200
>  #define PG_table     0x00000400
>  
> @@ -700,10 +700,13 @@ static __always_inline void __ClearPage##uname(struct 
> page *page)       \
>  PAGE_TYPE_OPS(Buddy, buddy)
>  
>  /*
> - * PageBalloon() is true for pages that are on the balloon page list
> - * (see mm/balloon_compaction.c).
> + * PageOffline() indicates that the pages is logically offline although the

s/pages/page/

:)


-- 

Thanks,

David / dhildenb

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