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SubjectRe: [PATCH] mm: cleanup the comment for head/tail pages of compound pages in mm/page_alloc.c
[CCing trivial tree]

Unquoted patch at https://lkml.org/lkml/2011/11/15/402

On Wed 16-11-11 08:05:07, Wang Sheng-Hui wrote:
[...]
> Thanks, Michal.
>
> New patch generated.
>
>
> [PATCH] mm: cleanup the comment for head/tail pages of compound pages in mm/page_alloc.c
>
> Only tail pages point at the head page using their ->first_page fields.
>
> Signed-off-by: Wang Sheng-Hui <shhuiw@gmail.com>

Reviewed-by: Michal Hocko <mhocko@suse.cz>

> ---
> mm/page_alloc.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 6e8ecb6..e7dd848 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -332,8 +332,8 @@ out:
> *
> * The remaining PAGE_SIZE pages are called "tail pages".
> *
> - * All pages have PG_compound set. All pages have their ->private pointing at
> - * the head page (even the head page has this).
> + * All pages have PG_compound set. All tail pages have their ->first_page
> + * pointing at the head page.
> *
> * The first tail page's ->lru.next holds the address of the compound page's
> * put_page() function. Its ->lru.prev holds the order of allocation.
> --
> 1.7.1

--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic


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