The patch titled
Subject: mm,memory_hotplug: drop redundant hugepage_migration_supported check
has been added to the -mm tree. Its filename is
mmmemory_hotplug-drop-redundant-hugepage_migration_supported-check.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mmmemory_hotplug-drop-redundant-hugepage_migration_supported-check.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mmmemory_hotplug-drop-redundant-hugepage_migration_supported-check.patch
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------------------------------------------------------
From: Oscar Salvador <osalvador@xxxxxxx>
Subject: mm,memory_hotplug: drop redundant hugepage_migration_supported check
has_unmovable_pages() already checks whether the hugetlb page supports
migration, so all non-migrateable hugetlb pages should have been caught
there. Let us drop the check from scan_movable_pages() as is redundant.
Link: http://lkml.kernel.org/r/20190320152658.10855-3-osalvador@xxxxxxx
Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/mm/memory_hotplug.c~mmmemory_hotplug-drop-redundant-hugepage_migration_supported-check
+++ a/mm/memory_hotplug.c
@@ -1340,8 +1340,7 @@ static unsigned long scan_movable_pages(
if (!PageHuge(page))
continue;
head = compound_head(page);
- if (hugepage_migration_supported(page_hstate(head)) &&
- page_huge_active(head))
+ if (page_huge_active(head))
return pfn;
skip = (1 << compound_order(head)) - (page - head);
pfn += skip - 1;
_
Patches currently in -mm which might be from osalvador@xxxxxxx are
mm-fix-__dump_page-when-mapping-host-is-not-set.patch
mmmemory_hotplug-unlock-1gb-hugetlb-on-x86_64.patch
mmmemory_hotplug-drop-redundant-hugepage_migration_supported-check.patch
