Messages in this thread | | | Date | Wed, 8 Oct 2014 02:10:13 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [PATCH 5/5] mm: poison page struct |
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On Tue, 7 Oct 2014, Dave Hansen wrote:
> Does this break slub's __cmpxchg_double_slab trick? I thought it > required page->freelist and page->counters to be doubleword-aligned.
Sure that would be required for it to work.
> It's not like we really require this optimization when we're debugging, > but trying to use it will unnecessarily slow things down.
Debugging by inserting more data into the page struct will already cause a significant slow down because the cache footprint of key functions will increase significantly. I would think that using the fallback functions is reasonable in this scenario,
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