[readdir] constify ->actor

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c
index 2fa2e2e..105a3b0 100644
--- a/fs/nfsd/nfs4recover.c
+++ b/fs/nfsd/nfs4recover.c
@@ -268,7 +268,10 @@
 {
 	const struct cred *original_cred;
 	struct dentry *dir = nn->rec_file->f_path.dentry;
-	struct nfs4_dir_ctx ctx;
+	struct nfs4_dir_ctx ctx = {
+		.ctx.actor = nfsd4_build_namelist,
+		.names = LIST_HEAD_INIT(ctx.names)
+	};
 	int status;
 
 	status = nfs4_save_creds(&original_cred);
@@ -281,8 +284,6 @@
 		return status;
 	}
 
-	INIT_LIST_HEAD(&ctx.names);	
-	ctx.ctx.actor = nfsd4_build_namelist;
 	status = iterate_dir(nn->rec_file, &ctx.ctx);
 	mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
 	while (!list_empty(&ctx.names)) {
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index f939ba9..a6bc8a7 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1944,14 +1944,15 @@
 static __be32 nfsd_buffered_readdir(struct file *file, filldir_t func,
 				    struct readdir_cd *cdp, loff_t *offsetp)
 {
-	struct readdir_data buf;
 	struct buffered_dirent *de;
 	int host_err;
 	int size;
 	loff_t offset;
+	struct readdir_data buf = {
+		.ctx.actor = nfsd_buffered_filldir,
+		.dirent = (void *)__get_free_page(GFP_KERNEL)
+	};
 
-	buf.ctx.actor = nfsd_buffered_filldir;
-	buf.dirent = (void *)__get_free_page(GFP_KERNEL);
 	if (!buf.dirent)
 		return nfserrno(-ENOMEM);