Messages in this thread | | | Subject | Re: [LSF/MM TOPIC] Discuss least bad options for resolving longterm-GUP usage by RDMA | From | Doug Ledford <> | Date | Wed, 06 Feb 2019 15:16:02 -0500 |
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On Wed, 2019-02-06 at 11:40 -0800, Matthew Wilcox wrote: > On Wed, Feb 06, 2019 at 07:16:21PM +0000, Christopher Lameter wrote: > > > > though? If we only allow this use case then we may not have to worry about > > long term GUP because DAX mapped files will stay in the physical location > > regardless. > > ... except for truncate. And now that I think about it, there was a > desire to support hot-unplug which also needed revoke.
We already support hot unplug of RDMA devices. But it is extreme. How does hot unplug deal with a program running from the device (something that would have returned ETXTBSY)?
-- Doug Ledford <dledford@redhat.com> GPG KeyID: B826A3330E572FDD Key fingerprint = AE6B 1BDA 122B 23B4 265B 1274 B826 A333 0E57 2FDD [unhandled content-type:application/pgp-signature] | |