nfs: convert nfs_rename to use async_rename infrastructure

There isn't much sense in maintaining two separate versions of rename
code. Convert nfs_rename to use the asynchronous rename infrastructure
that nfs_sillyrename uses, and emulate synchronous behavior by having
the task just wait on the reply.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Tested-by: Anna Schumaker <Anna.Schumaker@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index c8e48c26418b..b31f5d2400bd 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1940,6 +1940,7 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         struct inode *old_inode = old_dentry->d_inode;
         struct inode *new_inode = new_dentry->d_inode;
         struct dentry *dentry = NULL, *rehash = NULL;
+        struct rpc_task *task;
         int error = -EBUSY;
 
         dfprintk(VFS, "NFS: rename(%pd2 -> %pd2, ct=%d)\n",
@@ -1987,8 +1988,16 @@ int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
         if (new_inode != NULL)
                 NFS_PROTO(new_inode)->return_delegation(new_inode);
 
-        error = NFS_PROTO(old_dir)->rename(old_dir, &old_dentry->d_name,
-                                           new_dir, &new_dentry->d_name);
+        task = nfs_async_rename(old_dir, new_dir, old_dentry, new_dentry, NULL);
+        if (IS_ERR(task)) {
+                error = PTR_ERR(task);
+                goto out;
+        }
+
+        error = rpc_wait_for_completion_task(task);
+        if (error == 0)
+                error = task->tk_status;
+        rpc_put_task(task);
         nfs_mark_for_revalidate(old_inode);
 out:
         if (rehash)