I thought that the device will inc the reference count to that chunk of memory, ... | Hacker News

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		monocasa on July 27, 2021 \| parent \| context \| favorite \| on: Hastening Linux process cleanup with process_mrele... I thought that the device will inc the reference count to that chunk of memory, so it won't be allocated to another process AFAIK.

caf on July 27, 2021 [–]

This is right. Those physical pages get pinned by the device.

It's not like it's a new issue, anyway - physical backing pages can be dropped and re-used even if the process is still running, so the reference counting always had to exist.

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