SUNRPC: Give cloned RPC clients their own rpc_pipefs directory

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index f6d1d64..a1be89d 100644 (file)
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -53,6 +53,7 @@ struct rpc_clnt {
        struct dentry *         cl_dentry;      /* inode */
        struct rpc_clnt *       cl_parent;      /* Points to parent of clones */
        struct rpc_rtt          cl_rtt_default;
+       struct rpc_program *    cl_program;
        char                    cl_inline_name[32];
 };
 

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index de8bbfc..8b78177 100644 (file)
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -144,6 +144,7 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
        err = -ENOMEM;
        if (clnt->cl_metrics == NULL)
                goto out_no_stats;
+       clnt->cl_program  = program;
 
        if (!xprt_bound(clnt->cl_xprt))
                clnt->cl_autobind = 1;
@@ -257,6 +258,7 @@ struct rpc_clnt *
 rpc_clone_client(struct rpc_clnt *clnt)
 {
        struct rpc_clnt *new;
+       int err = -ENOMEM;
 
        new = kmemdup(clnt, sizeof(*new), GFP_KERNEL);
        if (!new)
@@ -266,6 +268,9 @@ rpc_clone_client(struct rpc_clnt *clnt)
        new->cl_metrics = rpc_alloc_iostats(clnt);
        if (new->cl_metrics == NULL)
                goto out_no_stats;
+       err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name);
+       if (err != 0)
+               goto out_no_path;
        new->cl_parent = clnt;
        atomic_inc(&clnt->cl_count);
        new->cl_xprt = xprt_get(clnt->cl_xprt);
@@ -273,17 +278,17 @@ rpc_clone_client(struct rpc_clnt *clnt)
        new->cl_autobind = 0;
        new->cl_oneshot = 0;
        new->cl_dead = 0;
-       if (!IS_ERR(new->cl_dentry))
-               dget(new->cl_dentry);
        rpc_init_rtt(&new->cl_rtt_default, clnt->cl_xprt->timeout.to_initval);
        if (new->cl_auth)
                atomic_inc(&new->cl_auth->au_count);
        return new;
+out_no_path:
+       rpc_free_iostats(new->cl_metrics);
 out_no_stats:
        kfree(new);
 out_no_clnt:
-       printk(KERN_INFO "RPC: out of memory in %s\n", __FUNCTION__);
-       return ERR_PTR(-ENOMEM);
+       dprintk("RPC: %s returned error %d\n", __FUNCTION__, err);
+       return ERR_PTR(err);
 }
 
 /*
@@ -336,16 +341,14 @@ rpc_destroy_client(struct rpc_clnt *clnt)
                rpcauth_destroy(clnt->cl_auth);
                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)) {
                rpc_rmdir(clnt->cl_dentry);
                rpc_put_mount();
        }
+       if (clnt->cl_parent != clnt) {
+               rpc_destroy_client(clnt->cl_parent);
+               goto out_free;
+       }
        if (clnt->cl_server != clnt->cl_inline_name)
                kfree(clnt->cl_server);
 out_free: