SUNRPC: skip clients with program without PipeFS entries
1) This is sane.
2) Otherwise there will be soft lockup:
do {
rpc_get_client_for_event (clnt->cl_dentry == NULL ==> choose)
__rpc_pipefs_event (clnt->cl_program->pipe_dir_name == NULL ==> return)
} while (1)
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index d10ebc4..8a19849 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -184,8 +184,6 @@
switch (event) {
case RPC_PIPEFS_MOUNT:
- if (clnt->cl_program->pipe_dir_name == NULL)
- break;
dentry = rpc_setup_pipedir_sb(sb, clnt,
clnt->cl_program->pipe_dir_name);
BUG_ON(dentry == NULL);
@@ -215,6 +213,8 @@
spin_lock(&sn->rpc_client_lock);
list_for_each_entry(clnt, &sn->all_clients, cl_clients) {
+ if (clnt->cl_program->pipe_dir_name == NULL)
+ break;
if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) ||
((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry))
continue;