Re: [PATCH v9 0/6] MAP_DIRECT for DAX userspace flush

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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
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