Commit 2a8628d4 authored Nov 16, 2016 by Reza Arbab Committed by Michael Ellerman Jan 30, 2017

powerpc/mm: Allow memory hotplug into an offline node



Relax the check preventing us from hotplugging into an offline node.

This limitation was added in commit 482ec7c4 ("[PATCH] powerpc numa:
Support sparse online node map") to prevent adding resources to an
uninitialized node.

These days, there is no harm in doing so. The addition will actually
cause the node to be initialized and onlined; add_memory_resource()
calls hotadd_new_pgdat() (if necessary) and node_set_online().

Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent 7656cd8e

arch/powerpc/mm/numa.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1093,7 +1093,7 @@ int hot_add_scn_to_nid(unsigned long scn_addr)
		nid = hot_add_node_scn_to_nid(scn_addr);
		}

		if (nid < 0 \|\| !node_online(nid))
		if (nid < 0 \|\| !node_possible(nid))
		nid = first_online_node;

		return nid;

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