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Date: Thu, 13 Dec 2018 20:53:53 -0800
From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 4/6] mm: migrate: Provide buffer_migrate_page_norefs()
Message-Id: <20181213205353.561d4f22fdb92efe57719b69@linux-foundation.org>
In-Reply-To: <20181211172143.7358-5-jack@suse.cz>
References: <20181211172143.7358-1-jack@suse.cz>
	<20181211172143.7358-5-jack@suse.cz>
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To: Jan Kara <jack@suse.cz>
Cc: linux-mm@kvack.org, mhocko@suse.cz, mgorman@suse.de

On Tue, 11 Dec 2018 18:21:41 +0100 Jan Kara <jack@suse.cz> wrote:

> Provide a variant of buffer_migrate_page() that also checks whether
> there are no unexpected references to buffer heads. This function will
> then be safe to use for block device pages.
> 
> ...
>
> +EXPORT_SYMBOL(buffer_migrate_page_norefs);

The export is presently unneeded and I don't think we expect that this
will be used by anything other than fs/block_dev.c?