diff --git a/drivers/staging/lustre/lustre/llite/namei.c b/drivers/staging/lustre/lustre/llite/namei.c
index b07079c4dda04488ecb72615e077d077e989dc26..9426759aedc90beb85ff7cc0270653827e646a7b 100644
--- a/drivers/staging/lustre/lustre/llite/namei.c
+++ b/drivers/staging/lustre/lustre/llite/namei.c
@@ -572,6 +572,10 @@ static struct dentry *ll_lookup_it(struct inode *parent, struct dentry *dentry,
 		}
 	}
 
+	if (it->it_op & IT_OPEN && it->it_flags & FMODE_WRITE &&
+	    dentry->d_sb->s_flags & MS_RDONLY)
+		return ERR_PTR(-EROFS);
+
 	if (it->it_op & IT_CREAT)
 		opc = LUSTRE_OPC_CREATE;
 	else