The patch titled
Subject: mm-memory_hotplug-simplify-node_states_check_changes_online-v2
has been added to the -mm tree. Its filename is
mm-memory_hotplug-simplify-node_states_check_changes_online-v2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory_hotplug-simplify-node_states_check_changes_online-v2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memory_hotplug-simplify-node_states_check_changes_online-v2.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxx>
Subject: mm-memory_hotplug-simplify-node_states_check_changes_online-v2
Link: http://lkml.kernel.org/r/20180921132634.10103-4-osalvador@xxxxxxxxxxxxxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Suggested-by: Pavel Tatashin <pavel.tatashin@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory_hotplug.c | 40 +++++++++-------------------------------
1 file changed, 9 insertions(+), 31 deletions(-)
--- a/mm/memory_hotplug.c~mm-memory_hotplug-simplify-node_states_check_changes_online-v2
+++ a/mm/memory_hotplug.c
@@ -688,40 +688,18 @@ static void node_states_check_changes_on
{
int nid = zone_to_nid(zone);
- /*
- * zone_for_pfn_range() can only return a zone within
- * (0..ZONE_NORMAL] or ZONE_MOVABLE.
- * If the zone is within the range (0..ZONE_NORMAL],
- * we need to check if:
- * 1) We need to set the node for N_NORMAL_MEMORY
- * 2) On CONFIG_HIGHMEM systems, we need to also set
- * the node for N_HIGH_MEMORY.
- * 3) On !CONFIG_HIGHMEM, we can disregard N_HIGH_MEMORY,
- * as N_HIGH_MEMORY falls back to N_NORMAL_MEMORY.
- */
+ arg->status_change_nid = -1;
+ arg->status_change_nid_normal = -1;
+ arg->status_change_nid_high = -1;
- if (zone_idx(zone) <= ZONE_NORMAL) {
- if (!node_state(nid, N_NORMAL_MEMORY))
- arg->status_change_nid_normal = nid;
- else
- arg->status_change_nid_normal = -1;
-
- if (IS_ENABLED(CONFIG_HIGHMEM)) {
- if (!node_state(nid, N_HIGH_MEMORY))
- arg->status_change_nid_high = nid;
- } else
- arg->status_change_nid_high = -1;
- }
-
- /*
- * if the node doesn't have memory before onlining it, we will need
- * to set the node to node_states[N_MEMORY] after the memory
- * gets onlined.
- */
if (!node_state(nid, N_MEMORY))
arg->status_change_nid = nid;
- else
- arg->status_change_nid = -1;
+ if (zone_idx(zone) <= ZONE_NORMAL && !node_state(nid, N_NORMAL_MEMORY))
+ arg->status_change_nid_normal = nid;
+#ifdef CONFIG_HIGHMEM
+ if (zone_idx(zone) <= N_HIGH_MEMORY && !node_state(nid, N_HIGH_MEMORY))
+ arg->status_change_nid_high = nid;
+#endif
}
static void node_states_set_node(int node, struct memory_notify *arg)
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mm-page_alloc-clean-up-check_for_memory.patch
mm-memory_hotplug-spare-unnecessary-calls-to-node_set_state.patch
mm-memory_hotplug-tidy-up-node_states_clear_node.patch
mm-memory_hotplug-simplify-node_states_check_changes_online.patch
mm-memory_hotplug-simplify-node_states_check_changes_online-v2.patch
mm-memory_hotplug-clean-up-node_states_check_changes_offline.patch
mm-memory_hotplug-clean-up-node_states_check_changes_offline-v2.patch
