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* [merged] mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal.patch removed from -mm tree
@ 2022-03-25  1:32 Andrew Morton
  0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2022-03-25  1:32 UTC (permalink / raw)
  To: mm-commits, osalvador, david, linmiaohe, akpm


The patch titled
     Subject: mm/memory_hotplug: avoid calling zone_intersects() for ZONE_NORMAL
has been removed from the -mm tree.  Its filename was
     mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/memory_hotplug: avoid calling zone_intersects() for ZONE_NORMAL

If zid reaches ZONE_NORMAL, the caller will always get the NORMAL zone no
matter what zone_intersects() returns.  So we can save some possible cpu
cycles by avoid calling zone_intersects() for ZONE_NORMAL.

Link: https://lkml.kernel.org/r/20220207133643.23427-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory_hotplug.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/memory_hotplug.c~mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal
+++ a/mm/memory_hotplug.c
@@ -823,7 +823,7 @@ static struct zone *default_kernel_zone_
 	struct pglist_data *pgdat = NODE_DATA(nid);
 	int zid;
 
-	for (zid = 0; zid <= ZONE_NORMAL; zid++) {
+	for (zid = 0; zid < ZONE_NORMAL; zid++) {
 		struct zone *zone = &pgdat->node_zones[zid];
 
 		if (zone_intersects(zone, start_pfn, nr_pages))
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-huge_memory-make-is_transparent_hugepage-static.patch


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2022-03-25  1:32 [merged] mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal.patch removed from -mm tree Andrew Morton

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