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[v4,11/14] lib: Move call_rcu() to call_rcu_lazy()

Message ID 20220819204857.3066329-12-joel@joelfernandes.org (mailing list archive)
State Superseded
Headers show
Series Implement call_rcu_lazy() and miscellaneous fixes | expand

Commit Message

Joel Fernandes Aug. 19, 2022, 8:48 p.m. UTC 
Move radix-tree and xarray to call_rcu_lazy(). This is required to
prevent callbacks triggering RCU machinery too quickly and too often,
which adds more power to the system.

Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
 lib/radix-tree.c | 2 +-
 lib/xarray.c     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
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Patch

diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index b3afafe46fff..1526dc9e1d93 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -305,7 +305,7 @@  void radix_tree_node_rcu_free(struct rcu_head *head)
 static inline void
 radix_tree_node_free(struct radix_tree_node *node)
 {
-	call_rcu(&node->rcu_head, radix_tree_node_rcu_free);
+	call_rcu_lazy(&node->rcu_head, radix_tree_node_rcu_free);
 }
 
 /*
diff --git a/lib/xarray.c b/lib/xarray.c
index ea9ce1f0b386..230abc8045fe 100644
--- a/lib/xarray.c
+++ b/lib/xarray.c
@@ -257,7 +257,7 @@  static void xa_node_free(struct xa_node *node)
 {
 	XA_NODE_BUG_ON(node, !list_empty(&node->private_list));
 	node->array = XA_RCU_FREE;
-	call_rcu(&node->rcu_head, radix_tree_node_rcu_free);
+	call_rcu_lazy(&node->rcu_head, radix_tree_node_rcu_free);
 }
 
 /*