hlist_bl_unhashed() and hlist_bl_empty() are all boolean functions, so
return bool instead of int.
Signed-off-by: NChen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>