Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-10 22:21:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

tipc: use node_list_lock to protect tipc_num_nodes variable

Browse Source 
As tipc_node_list is protected by rcu read lock on read side, it's
unnecessary to hold node_list_lock to protect tipc_node_list in
tipc_node_get_links(). Instead, node_list_lock should just protects
tipc_num_nodes in the function.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ying Xue 2014-03-27 12:54:38 +08:00 committed by David S. Miller
parent 6c7a762e70
commit 2220646a53
1 changed files with 3 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
net/tipc/node.c
View File

@ -352,11 +352,11 @@ struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED
" (too many nodes)");
}
spin_unlock_bh(&node_list_lock);
buf = tipc_cfg_reply_alloc(payload_size);
if (!buf) {
spin_unlock_bh(&node_list_lock);
if (!buf)
return NULL;
}
/* Add TLVs for all nodes in scope */
rcu_read_lock();
@ -369,7 +369,6 @@ struct sk_buff *tipc_node_get_nodes(const void *req_tlv_area, int req_tlv_space)
&node_info, sizeof(node_info));
}
rcu_read_unlock();
spin_unlock_bh(&node_list_lock);
return buf;
}