linux-kernel - [PATCH 1/5] maple_tree: convert mas_prealloc

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Message-ID: <20241114170524.64391-2-sidhartha.kumar@oracle.com>
Date: Thu, 14 Nov 2024 12:05:20 -0500
From: Sidhartha Kumar <sidhartha.kumar@...cle.com>
To: linux-kernel@...r.kernel.org, maple-tree@...ts.infradead.org
Cc: linux-mm@...ck.org, akpm@...ux-foundation.org, liam.howlett@...cle.com,
        Sidhartha Kumar <sidhartha.kumar@...cle.com>
Subject: [PATCH 1/5] maple_tree: convert mas_prealloc_calc() to take in a maple write state

In a subsequent patch, mas_prealloc_calc() will need to access fields only
in the ma_wr_state. Convert the function to take in a ma_wr_state and
modify all callers.

Signed-off-by: Sidhartha Kumar <sidhartha.kumar@...cle.com>
---
 lib/maple_tree.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index d0ae808f3a14..318d496debd7 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -4155,13 +4155,14 @@ static inline void mas_wr_prealloc_setup(struct ma_wr_state *wr_mas)
 /**
  * mas_prealloc_calc() - Calculate number of nodes needed for a
  * given store oepration
- * @mas: The maple state
+ * @wr_mas: The maple write state
  * @entry: The entry to store into the tree
  *
  * Return: Number of nodes required for preallocation.
  */
-static inline int mas_prealloc_calc(struct ma_state *mas, void *entry)
+static inline int mas_prealloc_calc(struct ma_wr_state *wr_mas, void *entry)
 {
+	struct ma_state *mas = wr_mas->mas;
 	int ret = mas_mt_height(mas) * 3 + 1;
 
 	switch (mas->store_type) {
@@ -4258,16 +4259,15 @@ static inline enum store_type mas_wr_store_type(struct ma_wr_state *wr_mas)
  */
 static inline void mas_wr_preallocate(struct ma_wr_state *wr_mas, void *entry)
 {
-	struct ma_state *mas = wr_mas->mas;
 	int request;
 
 	mas_wr_prealloc_setup(wr_mas);
-	mas->store_type = mas_wr_store_type(wr_mas);
-	request = mas_prealloc_calc(mas, entry);
+	wr_mas->mas->store_type = mas_wr_store_type(wr_mas);
+	request = mas_prealloc_calc(wr_mas, entry);
 	if (!request)
 		return;
 
-	mas_node_count(mas, request);
+	mas_node_count(wr_mas->mas, request);
 }
 
 /**
@@ -5441,7 +5441,7 @@ void *mas_store(struct ma_state *mas, void *entry)
 		return wr_mas.content;
 	}
 
-	request = mas_prealloc_calc(mas, entry);
+	request = mas_prealloc_calc(&wr_mas, entry);
 	if (!request)
 		goto store;
 
@@ -5538,7 +5538,7 @@ int mas_preallocate(struct ma_state *mas, void *entry, gfp_t gfp)
 
 	mas_wr_prealloc_setup(&wr_mas);
 	mas->store_type = mas_wr_store_type(&wr_mas);
-	request = mas_prealloc_calc(mas, entry);
+	request = mas_prealloc_calc(&wr_mas, entry);
 	if (!request)
 		return ret;
 
-- 
2.43.0