[PATCH 2/3] zsmalloc: add generic path and remove x86 dependency
sjenning at linux.vnet.ibm.com
Wed Jun 27 19:09:50 UTC 2012
On 06/27/2012 12:28 AM, Minchan Kim wrote:
>> + if (area->vm)
>> + return 0;
> Just out of curiosity.
> When do we need above check?
I did this in the case that there was a race between the for
loop in zs_init(), calling zs_cpu_notifier(), and a CPU
coming online. I've never seen the condition hit, but if it
did, it would leak memory without this check.
I would move the cpu notifier registration after the loop in
zs_init(), but then I could miss a cpu up event and we
wouldn't have the needed per-cpu resources for mapping.
All other suggestions are accepted. Thanks for the feedback!
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