2023-06-12 20:46:07

by Liam R. Howlett

[permalink] [raw]
Subject: [PATCH v2 12/16] maple_tree: Move mas_wr_end_piv() below mas_wr_extend_null()

Relocate it and call mas_wr_extend_null() from within mas_wr_end_piv().
Extending the NULL may affect the end pivot value so call
mas_wr_endtend_null() from within mas_wr_end_piv() to keep it all
together.

Signed-off-by: Liam R. Howlett <[email protected]>
---
lib/maple_tree.c | 31 +++++++++++++++----------------
1 file changed, 15 insertions(+), 16 deletions(-)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index fa51abaab09b..048d6413a114 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -4197,18 +4197,6 @@ static inline bool mas_wr_slot_store(struct ma_wr_state *wr_mas)
return true;
}

-static inline void mas_wr_end_piv(struct ma_wr_state *wr_mas)
-{
- while ((wr_mas->offset_end < wr_mas->node_end) &&
- (wr_mas->mas->last > wr_mas->pivots[wr_mas->offset_end]))
- wr_mas->offset_end++;
-
- if (wr_mas->offset_end < wr_mas->node_end)
- wr_mas->end_piv = wr_mas->pivots[wr_mas->offset_end];
- else
- wr_mas->end_piv = wr_mas->mas->max;
-}
-
static inline void mas_wr_extend_null(struct ma_wr_state *wr_mas)
{
struct ma_state *mas = wr_mas->mas;
@@ -4245,6 +4233,21 @@ static inline void mas_wr_extend_null(struct ma_wr_state *wr_mas)
}
}

+static inline void mas_wr_end_piv(struct ma_wr_state *wr_mas)
+{
+ while ((wr_mas->offset_end < wr_mas->node_end) &&
+ (wr_mas->mas->last > wr_mas->pivots[wr_mas->offset_end]))
+ wr_mas->offset_end++;
+
+ if (wr_mas->offset_end < wr_mas->node_end)
+ wr_mas->end_piv = wr_mas->pivots[wr_mas->offset_end];
+ else
+ wr_mas->end_piv = wr_mas->mas->max;
+
+ if (!wr_mas->entry)
+ mas_wr_extend_null(wr_mas);
+}
+
static inline unsigned char mas_wr_new_end(struct ma_wr_state *wr_mas)
{
struct ma_state *mas = wr_mas->mas;
@@ -4377,10 +4380,6 @@ static inline void *mas_wr_store_entry(struct ma_wr_state *wr_mas)

/* At this point, we are at the leaf node that needs to be altered. */
mas_wr_end_piv(wr_mas);
-
- if (!wr_mas->entry)
- mas_wr_extend_null(wr_mas);
-
/* New root for a single pointer */
if (unlikely(!mas->index && mas->last == ULONG_MAX)) {
mas_new_root(mas, wr_mas->entry);
--
2.39.2