On Thu, Aug 05, 2021 at 01:58:53PM +0300, Leon Romanovsky wrote: > > IMO, if ibv_rereg_mr failed, the mr is in undefined state, user > > needs to call ibv_dereg_mr in order to release it, so there no > > need to recover the original state. > > The thing is that it undefined state in the kernel. What will be if > user will change access_flags and try to use that "broken" MR > anyway? Will you catch it? rereg is not atomic, if the rereg fails in the middle the mr should be left in some safe state. Jason
