Re: [PATCH v9 0/6] MAP_DIRECT for DAX userspace flush
On Mon, Oct 16, 2017 at 03:02:52PM +0300, Sagi Grimberg wrote:
But why should the kernel ever need to mangle the CQ? if a lease
break
would deregister the MR the device is expected to generate remote
protection errors on its own.
The point is to avoid protection errors - hittles change over when the
DAX mapping changes like ODP does.
Theonly way to get there is to notify the app before the mappings
change.. Dan suggested having ibv_pollcq return this indication..
Jason