On Fri, 21 Sep 2007, Siddha, Suresh B wrote:
>
> git commit 34feb2c83beb3bdf13535a36770f7e50b47ef299 started using quicklists
> for freeing page table pages and removed the usage of tlb_remove_page()
>
> And looking at quicklist_free() and quicklist_free_page(), on a NUMA platform,
> this can potentially free the page before the corresponding TLB caches
> are flushed.
Hmm? We only add them to the quicklists in the exact same places where we
*used* to just free them entirely. So I don't see why semantics would have
changed..
> Can we revert this commit for 2.6.23 and look at this code post 2.6.23?
I'll happily revert it, but I want to understand this better, so more of
an explanation of the codepath that actually does something wrong, please.
Linus
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