linux-kernel - Re: [PATCH 05/22] mm: export alloc_pages

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Message-ID: <20190620191733.GH12083@dhcp22.suse.cz>
Date:   Thu, 20 Jun 2019 21:17:33 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Dan Williams <dan.j.williams@...el.com>,
        Jérôme Glisse <jglisse@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Ben Skeggs <bskeggs@...hat.com>, linux-mm@...ck.org,
        nouveau@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-nvdimm@...ts.01.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/22] mm: export alloc_pages_vma

On Thu 13-06-19 11:43:08, Christoph Hellwig wrote:
> noveau is currently using this through an odd hmm wrapper, and I plan
> to switch it to the real thing later in this series.
> 
> Signed-off-by: Christoph Hellwig <hch@....de>
> ---
>  mm/mempolicy.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/mm/mempolicy.c b/mm/mempolicy.c
> index 01600d80ae01..f9023b5fba37 100644
> --- a/mm/mempolicy.c
> +++ b/mm/mempolicy.c
> @@ -2098,6 +2098,7 @@ alloc_pages_vma(gfp_t gfp, int order, struct vm_area_struct *vma,
>  out:
>  	return page;
>  }
> +EXPORT_SYMBOL_GPL(alloc_pages_vma);

All allocator exported symbols are EXPORT_SYMBOL, what is a reason to
have this one special?

-- 
Michal Hocko
SUSE Labs