linux-kernel - Re: [PATCH] mm: remove unused alloc_pages_bulk

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Date:   Sat, 17 Dec 2022 04:56:03 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Lorenzo Stoakes <lstoakes@...il.com>
Cc:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Andrey Konovalov <andreyknvl@...il.com>,
        Ingo Molnar <mingo@...nel.org>, Marco Elver <elver@...gle.com>,
        Michal Hocko <mhocko@...e.com>
Subject: Re: [PATCH] mm: remove unused alloc_pages_bulk_list()

On Sat, Dec 17, 2022 at 12:15:54AM +0000, Lorenzo Stoakes wrote:
> This function is not referenced anywhere else in the kernel, remove it.

I think we're waiting to see if any users show up.  It's only been 18
months or so, so perhaps wait a little longer?

Also, if we do get rid of this, then __alloc_pages_bulk() can lose
the "list" argument.

> Signed-off-by: Lorenzo Stoakes <lstoakes@...il.com>
> ---
>  include/linux/gfp.h | 7 -------
>  1 file changed, 7 deletions(-)
> 
> diff --git a/include/linux/gfp.h b/include/linux/gfp.h
> index 65a78773dcca..67c5164f4758 100644
> --- a/include/linux/gfp.h
> +++ b/include/linux/gfp.h
> @@ -188,13 +188,6 @@ unsigned long alloc_pages_bulk_array_mempolicy(gfp_t gfp,
>  				unsigned long nr_pages,
>  				struct page **page_array);
>  
> -/* Bulk allocate order-0 pages */
> -static inline unsigned long
> -alloc_pages_bulk_list(gfp_t gfp, unsigned long nr_pages, struct list_head *list)
> -{
> -	return __alloc_pages_bulk(gfp, numa_mem_id(), NULL, nr_pages, list, NULL);
> -}
> -
>  static inline unsigned long
>  alloc_pages_bulk_array(gfp_t gfp, unsigned long nr_pages, struct page **page_array)
>  {
> -- 
> 2.38.1
>