Andrea Arcangeli wrote, on 23/02/11 02:45:
> On Tue, Feb 22, 2011 at 02:40:47PM +0100, Andrea Arcangeli wrote:
>> spin_lock_irq(&zone->lru_lock);
>> for (; low_pfn< end_pfn; low_pfn++) {
>> struct page *page;
>> +
>> + cond_resched();
>> +
>
> my bad, see the above spin_lock_irq oops...
>
> I attached two replacement patches to apply in order (both of them
> should be applied at the same time on top of git upstream, and they
> shouldn't lockup this time).
OK, these patches applied together against upstream didn't cause a crash
but I did observe:
significant slowdowns of MIDI playback (moreso than in previous cases,
and with less than 20 Meg of swap file in use);
kswapd0 sharing equal top place in CPU usage at times (e.g. 20 percent).
If I should try only one of the patches or something else entirely,
please let me know.
Regards,
Arthur.
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