From 0020356355192cbaf6d315515e6c95bd09618c3b Mon Sep 17 00:00:00 2001
From: Al Viro <viro@ZenIV.linux.org.uk>
Date: Sun, 5 May 2013 16:03:46 +0000
Subject: [PATCH] fib_trie: no need to delay vfree()
Now that vfree() can be called from interrupt contexts, there's no
need to play games with schedule_work() to escape calling vfree()
from RCU callbacks.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/ipv4/fib_trie.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index ff06b7543d9f..49616fed9340 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -125,7 +125,6 @@ struct tnode {
unsigned int empty_children; /* KEYLENGTH bits needed */
union {
struct rcu_head rcu;
- struct work_struct work;
struct tnode *tnode_free;
};
struct rt_trie_node __rcu *child[0];
@@ -383,12 +382,6 @@ static struct tnode *tnode_alloc(size_t size)
return vzalloc(size);
}
-static void __tnode_vfree(struct work_struct *arg)
-{
- struct tnode *tn = container_of(arg, struct tnode, work);
- vfree(tn);
-}
-
static void __tnode_free_rcu(struct rcu_head *head)
{
struct tnode *tn = container_of(head, struct tnode, rcu);
@@ -397,10 +390,8 @@ static void __tnode_free_rcu(struct rcu_head *head)
if (size <= PAGE_SIZE)
kfree(tn);
- else {
- INIT_WORK(&tn->work, __tnode_vfree);
- schedule_work(&tn->work);
- }
+ else
+ vfree(tn);
}
static inline void tnode_free(struct tnode *tn)
--
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