Instead of constantly checking each possibility of the maple state, create a fast path that will skip over checking unlikely states.
Cc: stable@vger.kernel.org Signed-off-by: Liam R. Howlett Liam.Howlett@oracle.com --- include/linux/maple_tree.h | 9 +++++++++ 1 file changed, 9 insertions(+)
diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h index e41c70ac7744..f66f5f78f8cf 100644 --- a/include/linux/maple_tree.h +++ b/include/linux/maple_tree.h @@ -511,6 +511,15 @@ static inline bool mas_is_paused(const struct ma_state *mas) return mas->node == MAS_PAUSE; }
+/* Check if the mas is pointing to a node or not */ +static inline bool mas_is_active(struct ma_state *mas) +{ + if ((unsigned long)mas->node >= MAPLE_RESERVED_RANGE) + return true; + + return false; +} + /** * mas_reset() - Reset a Maple Tree operation state. * @mas: Maple Tree operation state.