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Message-Id: <20231009090320.64565-2-zhangpeng.00@bytedance.com>
Date: Mon, 9 Oct 2023 17:03:11 +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, mjguzik@...il.com,
mathieu.desnoyers@...icios.com, npiggin@...il.com,
peterz@...radead.org, oliver.sang@...el.com, mst@...hat.com
Cc: zhangpeng.00@...edance.com, maple-tree@...ts.infradead.org,
linux-mm@...ck.org, linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: [PATCH v4 01/10] maple_tree: Add mt_free_one() and mt_attr() helpers
Add two helpers:
1. mt_free_one(), used to free a maple node.
2. mt_attr(), used to obtain the attributes of maple tree.
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 0e00a84e8e8f..28d8959386e7 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) &
@@ -5573,7 +5583,7 @@ 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
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