On Mon, Jul 23, 2018 at 03:00:20PM -0700, Tadeusz Struk wrote: > On 07/23/2018 02:56 PM, Jason Gunthorpe wrote: > > The proposed patch doesn't clear the data_pending if the entire buffer > > is not consumed, so of course it is ABI breaking, that really isn't OK. > > The data_pending will be cleared by the timeout handler if the user doesn't > read the response fully before the timeout expires. The is the same situation > if the user would not read the response at all. That causes write() to fail with EBUSY NAK from me on breaking the ABI like this Jason