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SubjectRe: [PATCH v2 1/1] mm: page_alloc: Avoid defining unused function
On Tue, 23 Apr 2024 19:14:43 +0300 Andy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:

> In some configurations I got
> mm/page_alloc.c:656:20: warning: unused function 'add_to_free_list' [-Wunused-function]
> Becuase the only user is guarged with a certain ifdeffery,
> do the same for add_to_free_list().
>
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -653,14 +653,6 @@ static inline void __add_to_free_list(struct page *page, struct zone *zone,
> area->nr_free++;
> }
>
> -static inline void add_to_free_list(struct page *page, struct zone *zone,
> - unsigned int order, int migratetype,
> - bool tail)
> -{
> - __add_to_free_list(page, zone, order, migratetype, tail);
> - account_freepages(zone, 1 << order, migratetype);
> -}
> -
> /*
> * Used for pages which are on another list. Move the pages to the tail
> * of the list - so the moved pages won't immediately be considered for
> @@ -6776,6 +6768,14 @@ bool is_free_buddy_page(const struct page *page)
> EXPORT_SYMBOL(is_free_buddy_page);
>
> #ifdef CONFIG_MEMORY_FAILURE
> +static inline void add_to_free_list(struct page *page, struct zone *zone,
> + unsigned int order, int migratetype,
> + bool tail)
> +{
> + __add_to_free_list(page, zone, order, migratetype, tail);
> + account_freepages(zone, 1 << order, migratetype);
> +}
> +
> /*
> * Break down a higher-order page in sub-pages, and keep our target out of
> * buddy allocator.

Thanks, I'll queue this as a fix against "mm: page_alloc: consolidate
free page accounting".

Please do tell us the config when fixing these things. That way I can
do a little bisect to ensure that I correctly identified the offending
patch.


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