On 04/06/2013 06:56 PM, Simon Jeons wrote:
Hi Cody,
On 04/06/2013 04:33 AM, Cody P Schafer wrote:
In free_hot_cold_page(), we rely on pcp->batch remaining stable.
Updating it without being on the cpu owning the percpu pageset
potentially destroys this stability.
If cpu is off, can its pcp pageset be used in free_hot_code_page()?
I don't expect it to be as we use this_cpu_ptr() to access the pcp
pageset. Unless there is some crazy mode where we can override the cpu a
task believes it is running on...
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