mm/vmstat: remove unneeded return value
The return value of pagetypeinfo_showfree and pagetypeinfo_showblockcount are unused now. Remove them. Link: https://lkml.kernel.org/r/20210715122911.15700-4-linmiaohe@huawei.comSigned-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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