Messages in this thread | | | Date | Mon, 30 Oct 2023 12:25:19 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [RFC PATCH v3 0/7] slub: Delay freezing of CPU partial slabs |
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On Sat, 28 Oct 2023, Chengming Zhou wrote:
> 2. But for full slab (slab->freelist == NULL), PG_workingset is not much useful, we don't > safely know whether it's used as the cpu slab or not just from this flag. So __slab_free() > still rely on the "frozen" bit to know it. > > 3. And the maintaining of "frozen" has no extra cost now, since it's changed together with "freelist" > and other counter using cmpxchg, we already have the cmpxchg when start to use a slab as the cpu slab. > > Maybe I missed something, I don't know how to drop the frozen flag.
Maybe frozen is now = PG_Workingset | cmpxchg-frozen?
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