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    Subject[PATCH v7 10/14] memremap: mark devm_memremap_pages() EXPORT_SYMBOL_GPL
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    The devm_memremap_pages() facility is tightly integrated with the
    kernel's memory hotplug functionality. It injects an altmap argument
    deep into the architecture specific vmemmap implementation to allow
    allocating from specific reserved pages, and it has Linux specific
    assumptions about page structure reference counting relative to
    get_user_pages() and get_user_pages_fast(). It was an oversight that
    this was not marked EXPORT_SYMBOL_GPL from the outset.

    Cc: Michal Hocko <mhocko@suse.com>
    Cc: Christoph Hellwig <hch@lst.de>
    Cc: "Jérôme Glisse" <jglisse@redhat.com>
    Signed-off-by: Dan Williams <dan.j.williams@intel.com>
    ---
    kernel/memremap.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/kernel/memremap.c b/kernel/memremap.c
    index 72d0bb6fc47d..766cb9a487ae 100644
    --- a/kernel/memremap.c
    +++ b/kernel/memremap.c
    @@ -430,7 +430,7 @@ void *devm_memremap_pages(struct device *dev, struct dev_pagemap *pgmap)
    devres_free(pgmap);
    return ERR_PTR(error);
    }
    -EXPORT_SYMBOL(devm_memremap_pages);
    +EXPORT_SYMBOL_GPL(devm_memremap_pages);

    unsigned long vmem_altmap_offset(struct vmem_altmap *altmap)
    {
    \
     
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