mm: remove page_is_poisoned() from linux/mm.h
When commit bd33ef36 ("mm: enable page poisoning early at boot") got rid of the PAGE_EXT_DEBUG_POISON, page_is_poisoned in the header left behind. This patch cleans up the leftovers under the table. Link: http://lkml.kernel.org/r/1528101069-21637-1-git-send-email-kpark3469@gmail.comSigned-off-by: NSahara <keun-o.park@darkmatter.ae> Acked-by: NMichal Hocko <mhocko@suse.com> Reviewed-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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