On Mon, Sep 23, 2019 at 09:36:01AM +0000, Michal Kalderon wrote: > > > + * will use the key to retrieve information such as address to > > > + * be mapped and how. > > > + * > > > + * Return: unique key or RDMA_USER_MMAP_INVALID if entry was not > > added. > > > + */ > > > +u64 rdma_user_mmap_entry_insert(struct ib_ucontext *ucontext, > > > + struct rdma_user_mmap_entry *entry, > > > + size_t length) > > > > The similarly we don't need to return a u64 here and the sort of ugly > > RDMA_USER_MMAP_INVALID can go away > > So you mean add a return code here ? and on failure driver will delete the > Allocated xx_user_mmap_entry and not store it in xx_key ? I'm not sure what this means Jason