Messages in this thread | | | Date | Tue, 24 Apr 2012 11:08:25 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [PATCH -mm V2] do_migrate_pages() calls migrate_to_node() even if task is already on a correct node |
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On Tue, 24 Apr 2012, Larry Woodman wrote:
> While moving tasks between cpusets we noticed some strange behavior. > Specifically if the nodes of the destination > cpuset are a subset of the nodes of the source cpuset do_migrate_pages() will > move pages that are already on a node > in the destination cpuset. The reason for this is do_migrate_pages() does not > check whether each node in the source > nodemask is in the destination nodemask before calling migrate_to_node(). If > we simply do this check and skip them > when the source is in the destination moving we wont move nodes that dont need > to be moved.
Acked-by: Christoph Lameter <cl@linux.com>
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