rpc_pipefs: call fsnotify_{unlink,rmdir}() hooks

This will allow generating fsnotify delete events after the
fsnotify_nameremove() hook is removed from d_delete().

Cc: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: Anna Schumaker <anna.schumaker@netapp.com>
Reviewed-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

net/sunrpc/rpc_pipe.c

@@ -598,6 +598,8 @@ static int __rpc_rmdir(struct inode *dir, struct dentry *dentry)
 
 	dget(dentry);
 	ret = simple_rmdir(dir, dentry);
+	if (!ret)
+		fsnotify_rmdir(dir, dentry);
 	d_delete(dentry);
 	dput(dentry);
 	return ret;
@@ -609,6 +611,8 @@ static int __rpc_unlink(struct inode *dir, struct dentry *dentry)
 
 	dget(dentry);
 	ret = simple_unlink(dir, dentry);
+	if (!ret)
+		fsnotify_unlink(dir, dentry);
 	d_delete(dentry);
 	dput(dentry);
 	return ret;