Re: [PATCH 1/9] mm: add a "struct subpage" type containing a page, offset and length

[Ian Campbell <Ian.Campbell@citrix.com>]

On Mon, 2011-10-10 at 12:11 +0100, Ian Campbell wrote:

> Cc: linux-mm@kvack.org
> ---
>  include/linux/mm_types.h |   11 +++++++++++
>  1 files changed, 11 insertions(+), 0 deletions(-)

get_maintainers.pl didn't pick up on this CC. Since mm_types.h was split
out of mm.h does the following make sense? Not sure if mm_*.h (or just
mm_inline.hm?) also makes sense.

8<--------------------------

Subject: MAINTAINER: mm subsystem includes mm_types.h

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

diff --git a/MAINTAINERS b/MAINTAINERS
index ae8820e..f10a7ea 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4212,6 +4212,7 @@ L:	linux-mm@kvack.org
 W:	http://www.linux-mm.org
 S:	Maintained
 F:	include/linux/mm.h
+F:	include/linux/mm_types.h
 F:	mm/
 
 MEMORY RESOURCE CONTROLLER


> 
> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
> index 774b895..dc1d103 100644
> --- a/include/linux/mm_types.h
> +++ b/include/linux/mm_types.h
> @@ -135,6 +135,17 @@ struct page {
>  #endif
>  ;
>  
> +struct subpage {
> +	struct page *page;
> +#if (BITS_PER_LONG > 32) || (PAGE_SIZE >= 65536)
> +	__u32 page_offset;
> +	__u32 size;
> +#else
> +	__u16 page_offset;
> +	__u16 size;
> +#endif
> +};
> +
>  typedef unsigned long __nocast vm_flags_t;
>  
>  /*


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