On 27/02/2024 11:31 am, Dave Hansen wrote:
On 2/26/24 14:24, Huang, Kai wrote:
What is the downside of doing per-group reclaim when try_charge()
succeeds for the enclave but failed to allocate EPC page?
Could you give an complete answer why you choose to use global reclaim
for the above case?
There are literally two different limits at play. There's the limit
that the cgroup imposes and then the actual physical limit.
Hitting the cgroup limit induces cgroup reclaim.
Hitting the physical limit induces global reclaim.
Maybe I'm just being dense, but I fail to understand why you would want
to entangle those two different concepts more than absolutely necessary.
OK. Yes I agree doing per-cgroup reclaim when hitting physical limit
would bring another layer of consideration of when to do global reclaim,
which is not necessary now.
