linux-kernel - [PATCH v2 1/6] maple

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Date:   Wed, 30 Aug 2023 20:56:49 +0800
From:   Peng Zhang <zhangpeng.00@...edance.com>
To:     Liam.Howlett@...cle.com, corbet@....net, akpm@...ux-foundation.org,
        willy@...radead.org, brauner@...nel.org, surenb@...gle.com,
        michael.christie@...cle.com, peterz@...radead.org,
        mathieu.desnoyers@...icios.com, npiggin@...il.com, avagin@...il.com
Cc:     linux-mm@...ck.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Peng Zhang <zhangpeng.00@...edance.com>
Subject: [PATCH v2 1/6] maple_tree: Add two helpers

Add two helpers, which will be used later.

Signed-off-by: Peng Zhang <zhangpeng.00@...edance.com>
---
 lib/maple_tree.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index ee1ff0c59fd7..ef234cf02e3e 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -165,6 +165,11 @@ static inline int mt_alloc_bulk(gfp_t gfp, size_t size, void **nodes)
 	return kmem_cache_alloc_bulk(maple_node_cache, gfp, size, nodes);
 }
 
+static inline void mt_free_one(struct maple_node *node)
+{
+	kmem_cache_free(maple_node_cache, node);
+}
+
 static inline void mt_free_bulk(size_t size, void __rcu **nodes)
 {
 	kmem_cache_free_bulk(maple_node_cache, size, (void **)nodes);
@@ -205,6 +210,11 @@ static unsigned int mas_mt_height(struct ma_state *mas)
 	return mt_height(mas->tree);
 }
 
+static inline unsigned int mt_attr(struct maple_tree *mt)
+{
+	return mt->ma_flags & ~MT_FLAGS_HEIGHT_MASK;
+}
+
 static inline enum maple_type mte_node_type(const struct maple_enode *entry)
 {
 	return ((unsigned long)entry >> MAPLE_NODE_TYPE_SHIFT) &
@@ -5520,7 +5530,7 @@ void mas_destroy(struct ma_state *mas)
 			mt_free_bulk(count, (void __rcu **)&node->slot[1]);
 			total -= count;
 		}
-		kmem_cache_free(maple_node_cache, node);
+		mt_free_one(ma_mnode_ptr(node));
 		total--;
 	}
 
-- 
2.20.1