Re: [2.6.24-rc8-mm1][regression?] numactl --interleave=all doesn't works on memoryless node.

Mel Gorman
2008-02-05T14:36:03Z

On (04/02/08 13:20), Lee Schermerhorn didst pronounce:
> > > When the kernel behaviour changes and breaks user space then the kernel
> > > is usually wrong. Cc'ed Lee S. who maintains the kernel code now.
>
> The memoryless nodes patch series changed a lot of things, so just
> reverting this one area [mpol_check_policy()] probably won't restore the
> prior behavior. A fully populated node mask is not necessarily a proper
> subset of node_online_map(). And contextualize_policy() also requires
> the mask to be a subset of mems_allowed which also defaults to nodes
> with memory.
>
> I don't know how Mel Gorman's "two zonelist" series, which is still
> awaiting a window into the -mm tree, affects this behavior. Those
> patches will certainly be affected by whatever we decide here.
>

I doubt they'd make a difference to this particular problem.

--
Mel Gorman
Part-time Phd Student Linux Technology Center
University of Limerick IBM Dublin Software Lab