From: Robert Olsson <robert.olsson@its.uu.se>
Date: Mon, 26 Mar 2007 21:22:22 +0000 (-0700)
Subject: [IPV4] fib_trie: Document locking.
X-Git-Tag: v2.6.21-rc6~114^2~1
X-Git-Url: http://ftp.safe.ca/?a=commitdiff_plain;h=d562f1f8a92035d5d4681c178fccb991ce57f33a;p=safe%2Fjmp%2Flinux-2.6

[IPV4] fib_trie: Document locking.

Paul E. McKenney writes:

> Those of use who dive into networking only occasionally would much
> appreciate this.  ;-)

No problem here...

Acked-by: Robert Olsson <robert.olsson@its.uu.se>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> (but trivial)
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index ada9b3d..214c347 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1123,6 +1123,9 @@ err:
 	return fa_head;
 }
 
+/*
+ * Caller must hold RTNL.
+ */
 static int fn_trie_insert(struct fib_table *tb, struct fib_config *cfg)
 {
 	struct trie *t = (struct trie *) tb->tb_data;
@@ -1540,6 +1543,9 @@ static int trie_leaf_remove(struct trie *t, t_key key)
 	return 1;
 }
 
+/*
+ * Caller must hold RTNL.
+ */
 static int fn_trie_delete(struct fib_table *tb, struct fib_config *cfg)
 {
 	struct trie *t = (struct trie *) tb->tb_data;
@@ -1718,6 +1724,9 @@ up:
 	return NULL; /* Ready. Root of trie */
 }
 
+/*
+ * Caller must hold RTNL.
+ */
 static int fn_trie_flush(struct fib_table *tb)
 {
 	struct trie *t = (struct trie *) tb->tb_data;