On Tue, 14 Jan 2014, Dave Hansen wrote:
> diff -puN include/linux/mm.h~slub-reset-page-at-free include/linux/mm.h
> --- a/include/linux/mm.h~slub-reset-page-at-free 2014-01-14
> 09:57:57.099666808 -0800
> +++ b/include/linux/mm.h 2014-01-14 09:57:57.110667301 -0800
> @@ -2076,5 +2076,16 @@ static inline void set_page_pfmemalloc(s
> page->index = pfmemalloc;
> }
>
> +/*
> + * Custom allocators (like the slabs) use 'struct page' fields
> + * for all kinds of things. This resets the page's state so that
> + * the buddy allocator will be happy with it.
> + */
> +static inline void allocator_reset_page(struct page *page)
This is ambiguous as to what "allocator" you're referring to unless we
look at the comment. I think it would be better to name it
slab_reset_page() or something similar.
> +{
> + page->mapping = NULL;
> + page_mapcount_reset(page);
> +}
> +
> #endif /* __KERNEL__ */
> #endif /* _LINUX_MM_H */
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