linux-kernel - [PATCH] maple_tree: Fix comments about MAS

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Date:   Mon,  6 Nov 2023 10:41:24 -0500
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>
Subject: [PATCH] maple_tree: Fix comments about MAS_*

Missed some documentation changes when separating the nodes from the
status of the maple state.

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
---
 lib/maple_tree.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

Andrew, please squash this into [PATCH 08/12] maple_tree: Separate
ma_state node from status.

I missed some comment changes.

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 97ae58cd93ad..59dd0e2325e4 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -2219,12 +2219,10 @@ static inline bool mas_next_sibling(struct ma_state *mas)
 }
 
 /*
- * mte_node_or_node() - Return the encoded node or MAS_NONE.
+ * mte_node_or_none() - Set the enode and state.
  * @enode: The encoded maple node.
  *
- * Shorthand to avoid setting %NULLs in the tree or maple_subtree_state.
- *
- * Return: @enode or MAS_NONE
+ * Set the node to the enode and the status.
  */
 static inline void mas_node_or_none(struct ma_state *mas,
 		struct maple_enode *enode)
@@ -4359,11 +4357,13 @@ static __always_inline bool mas_rewalk_if_dead(struct ma_state *mas,
 
 /*
  * mas_prev_node() - Find the prev non-null entry at the same level in the
- * tree.  The prev value will be mas->node[mas->offset] or MAS_NONE.
+ * tree.  The prev value will be mas->node[mas->offset] or the status will be
+ * ma_none.
  * @mas: The maple state
  * @min: The lower limit to search
  *
- * The prev node value will be mas->node[mas->offset] or MAS_NONE.
+ * The prev node value will be mas->node[mas->offset] or the status will be
+ * ma_none.
  * Return: 1 if the node is dead, 0 otherwise.
  */
 static int mas_prev_node(struct ma_state *mas, unsigned long min)
@@ -4885,7 +4885,7 @@ static inline bool mas_anode_descend(struct ma_state *mas, unsigned long size)
  * @mas: The maple state.
  *
  * mas->index and mas->last will be set to the range if there is a value.  If
- * mas->node is MAS_NONE, reset to mas_start
+ * mas->status is ma_none, reset to ma_start
  *
  * Return: the entry at the location or %NULL.
  */
@@ -5854,7 +5854,7 @@ static bool mas_prev_setup(struct ma_state *mas, unsigned long min, void **entry
  * @min: The minimum value to check.
  *
  * Must hold rcu_read_lock or the write lock.
- * Will reset mas to MAS_START if the node is MAS_NONE.  Will stop on not
+ * Will reset mas to ma_start if the status is ma_none.  Will stop on not
  * searchable nodes.
  *
  * Return: the previous value or %NULL.
@@ -5877,7 +5877,7 @@ EXPORT_SYMBOL_GPL(mas_prev);
  *
  * Sets @mas->index and @mas->last to the range.
  * Must hold rcu_read_lock or the write lock.
- * Will reset mas to MAS_START if the node is MAS_NONE.  Will stop on not
+ * Will reset mas to ma_start if the node is ma_none.  Will stop on not
  * searchable nodes.
  *
  * Return: the previous value or %NULL.
@@ -6032,7 +6032,7 @@ static __always_inline bool mas_find_setup(struct ma_state *mas, unsigned long m
  *
  * Must hold rcu_read_lock or the write lock.
  * If an entry exists, last and index are updated accordingly.
- * May set @mas->node to MAS_NONE.
+ * May set @mas->status to ma_overflow.
  *
  * Return: The entry or %NULL.
  */
@@ -6059,7 +6059,7 @@ EXPORT_SYMBOL_GPL(mas_find);
  *
  * Must hold rcu_read_lock or the write lock.
  * If an entry exists, last and index are updated accordingly.
- * May set @mas->node to MAS_NONE.
+ * May set @mas->status to ma_overflow.
  *
  * Return: The entry or %NULL.
  */
@@ -6171,7 +6171,7 @@ static bool mas_find_rev_setup(struct ma_state *mas, unsigned long min,
  *
  * Must hold rcu_read_lock or the write lock.
  * If an entry exists, last and index are updated accordingly.
- * May set @mas->node to MAS_NONE.
+ * May set @mas->status to ma_underflow.
  *
  * Return: The entry or %NULL.
  */
@@ -6197,7 +6197,7 @@ EXPORT_SYMBOL_GPL(mas_find_rev);
  *
  * Must hold rcu_read_lock or the write lock.
  * If an entry exists, last and index are updated accordingly.
- * May set @mas->node to MAS_NONE.
+ * May set @mas->status to ma_underflow.
  *
  * Return: The entry or %NULL.
  */
-- 
2.40.1