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From: Oscar Salvador <osalvador@suse.de>
To: akpm@linux-foundation.org
Cc: mhocko@suse.com, david@redhat.com, mike.kravetz@oracle.com,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org,
	Oscar Salvador <osalvador@suse.de>
Subject: [PATCH resend 2/2] mm,memory_hotplug: Drop redundant hugepage_migration_supported check
Date: Wed, 20 Mar 2019 16:26:58 +0100
Message-ID: <20190320152658.10855-3-osalvador@suse.de> (raw)
In-Reply-To: <20190320152658.10855-1-osalvador@suse.de>

has_unmovable_pages() does alreay check 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.

Signed-off-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
---
 mm/memory_hotplug.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 02283732544e..37a83a83e8f8 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1340,8 +1340,7 @@ static unsigned long scan_movable_pages(unsigned long start, unsigned long end)
 		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;
-- 
2.13.7


      parent reply index

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-20 15:26 [PATCH resend 0/2] Unlock 1GB-hugetlb on x86_64 Oscar Salvador
2019-03-20 15:26 ` [PATCH resend 1/2] mm,memory_hotplug: " Oscar Salvador
2019-03-20 15:26 ` Oscar Salvador [this message]

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