Messages in this thread | | | Date | Tue, 12 Feb 2019 16:36:36 +0000 | From | Christopher Lameter <> | Subject | Re: [LSF/MM TOPIC] Discuss least bad options for resolving longterm-GUP usage by RDMA |
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On Mon, 11 Feb 2019, Dan Williams wrote:
> An mmap write after a fault due to a hole punch is free to trigger > SIGBUS if the subsequent page allocation fails. So no, I don't see > them as the same unless you're allowing for the holder of the MR to > receive a re-fault failure.
Order 0 page allocation failures are generally not possible in that path. System will reclaim and OOM before that happens.
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