[RESEND] [PATCH v1 3/3] powerpc: fix node_possible_map limitations

[Balbir Singh <bsingharora@gmail.com>]

We've fixed the memory hotplug issue with memcg, hence
this work around should not be required.

Reverts: commit 3af229f2071f
("powerpc/numa: Reset node_possible_map to only node_online_map")

Cc: Tejun Heo <tj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org> 
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Balbir Singh <bsingharora@gmail.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>

---
 arch/powerpc/mm/numa.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index a51c188..ca8c2ab 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -916,13 +916,6 @@ void __init initmem_init(void)
 
 	memblock_dump_all();
 
-	/*
-	 * Reduce the possible NUMA nodes to the online NUMA nodes,
-	 * since we do not support node hotplug. This ensures that  we
-	 * lower the maximum NUMA node ID to what is actually present.
-	 */
-	nodes_and(node_possible_map, node_possible_map, node_online_map);
-
 	for_each_online_node(nid) {
 		unsigned long start_pfn, end_pfn;
 
-- 
2.5.5