Merge branch 'sched/urgent' into sched/core, to pick up fixes and refresh the branch

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index e41c70ac7744..d01e850b570f 100644
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -428,6 +428,8 @@ struct ma_wr_state {
 #define MAS_ROOT	((struct maple_enode *)5UL)
 #define MAS_NONE	((struct maple_enode *)9UL)
 #define MAS_PAUSE	((struct maple_enode *)17UL)
+#define MAS_OVERFLOW	((struct maple_enode *)33UL)
+#define MAS_UNDERFLOW	((struct maple_enode *)65UL)
 #define MA_ERROR(err) \
 		((struct maple_enode *)(((unsigned long)err << 2) | 2UL))
 
@@ -511,6 +513,15 @@ 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.