Nick Piggin <piggin@xxxxxxxxxxxxxxx> wrote:Oh? Why not? I didn't think empty zones were filtered out? (perhaps
Chris Wright <chrisw@xxxxxxxx> wrote:>
>>(whereas I could get the mainline code, and the
>> one-liner to spin right off). >>
>
>How? (up to and including .config please).
>
>
>
Ah, free_pages <= pages_high, ie. 0 <= 0, which is true;
commence spinning.
Maybe. It requires that the zonelists be screwy:
Node 1 DMA free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB
protections[]: 0 0 0
Node 1 Normal free:25272kB min:1020kB low:2040kB high:3060kB active:624172kB inactive:282700kB present:1047936kB
protections[]: 0 0 0
Node 1 HighMem free:0kB min:128kB low:256kB high:384kB active:0kB inactive:0kB present:0kB
protections[]: 0 0 0
Node 0 DMA free:728kB min:12kB low:24kB high:36kB active:788kB inactive:7848kB present:16384kB
protections[]: 0 0 0
Node 0 Normal free:27200kB min:1004kB low:2008kB high:3012kB active:332792kB inactive:422744kB present:1032188kB
protections[]: 0 0 0
Node 0 HighMem free:0kB min:128kB low:256kB high:384kB active:0kB inactive:0kB present:0kB
protections[]: 0 0 0
See that DMA zone on node 1? Wonder how it got like that. It
should not be inside pgdat->nrzones anyway.
David, is your setup NUMA? Can you show us a sysrq-M dump?