SUNRPC: Fix dentry refcounting issues with users of rpc_pipefs
rpc_unlink() and rpc_rmdir() will dput the dentry reference for you.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
(cherry picked from a05a57effa71a1f67ccbfc52335c10c8b85f3f6a commit)
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index d307556..d9eac70 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -184,7 +184,6 @@
out_no_auth:
if (!IS_ERR(clnt->cl_dentry)) {
rpc_rmdir(clnt->cl_dentry);
- dput(clnt->cl_dentry);
rpc_put_mount();
}
out_no_path:
@@ -251,10 +250,8 @@
new->cl_autobind = 0;
new->cl_oneshot = 0;
new->cl_dead = 0;
- if (!IS_ERR(new->cl_dentry)) {
+ if (!IS_ERR(new->cl_dentry))
dget(new->cl_dentry);
- rpc_get_mount();
- }
rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
if (new->cl_auth)
atomic_inc(&new->cl_auth->au_count);
@@ -317,11 +314,15 @@
clnt->cl_auth = NULL;
}
if (clnt->cl_parent != clnt) {
+ if (!IS_ERR(clnt->cl_dentry))
+ dput(clnt->cl_dentry);
rpc_destroy_client(clnt->cl_parent);
goto out_free;
}
- if (!IS_ERR(clnt->cl_dentry))
+ if (!IS_ERR(clnt->cl_dentry)) {
rpc_rmdir(clnt->cl_dentry);
+ rpc_put_mount();
+ }
if (clnt->cl_xprt) {
xprt_destroy(clnt->cl_xprt);
clnt->cl_xprt = NULL;
@@ -331,10 +332,6 @@
out_free:
rpc_free_iostats(clnt->cl_metrics);
clnt->cl_metrics = NULL;
- if (!IS_ERR(clnt->cl_dentry)) {
- dput(clnt->cl_dentry);
- rpc_put_mount();
- }
kfree(clnt);
return 0;
}