Re: [PATCH v9 0/6] MAP_DIRECT for DAX userspace flush
On Fri, Oct 13, 2017 at 08:14:55AM -0700, Dan Williams wrote:
scheme specific to RDMA which seems like a waste to me when we can
generically signal an event on the fd for any event that effects any
of the vma's on the file. The FL_LAYOUT lease impacts the entire file,
so as far as I can see delaying the notification until MR-init is too
late, too granular, and too RDMA specific.
But for RDMA a FD is not what we care about - we want the MR handle so
the app knows which MR needs fixing.
Jason