As the comment said, we want a node benefit BOTH task and group, thus the
condition to skip the node should be:
taskimp < 0 || groupimp < 0
CC: Mel Gorman <mgor...@suse.de>
CC: Ingo Molnar <mi...@redhat.com>
CC: Peter Zijlstra <pet...@infradead.org>
Signed-off-by: Michael Wang <wang...@linux.vnet.ibm.com>
---
kernel/sched/fair.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 803e343..53e3ba9 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1225,7 +1225,7 @@ static int task_numa_migrate(struct task_struct *p)
/* Only consider nodes where both task and groups
benefit */
taskimp = task_weight(p, nid) - taskweight;
groupimp = group_weight(p, nid) - groupweight;
- if (taskimp < 0 && groupimp < 0)
+ if (taskimp < 0 || groupimp < 0)
continue;
env.dst_nid = nid;
--
1.7.9.5
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