Re: [PATCH 5/4] update ksm userspace interfaces

[Gerd Hoffmann]

Izik Eidus wrote:
> The main problem that ksm will face when removing the fd interface is:
> right now when you register memory into ksm, you open fd, and then ksm
> do get_task_mm(), we will do mmput when the file will be closed

Did you test whenever it really cleans up in case you "kill -9 qemu"?

I recently did something simliar with the result that the extra
reference hold on mm_struct prevented the process memory from being
zapped ...

cheers,
  Gerd
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