mm/dmapool.c: change is_page_busy() return from int to bool
This makes the function is_page_busy() return bool rather then an int now due to this particular function's single return statement only ever evaulating to either one or zero. Signed-off-by: NNicholas Krause <xerofoify@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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