From: Zi Yan <zi.yan@sent.com>
To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Cc: kirill.shutemov@linux.intel.com, minchan@kernel.org,
vbabka@suse.cz, mgorman@techsingularity.net, mhocko@kernel.org,
khandual@linux.vnet.ibm.com, zi.yan@cs.rutgers.edu,
dnellans@nvidia.com, dave.hansen@intel.com,
n-horiguchi@ah.jp.nec.com
Subject: [PATCH v9 10/10] mm: memory_hotplug: memory hotremove supports thp migration
Date: Mon, 17 Jul 2017 15:39:55 -0400 [thread overview]
Message-ID: <20170717193955.20207-11-zi.yan@sent.com> (raw)
In-Reply-To: <20170717193955.20207-1-zi.yan@sent.com>
From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
This patch enables thp migration for memory hotremove.
---
ChangeLog v1->v2:
- base code switched from alloc_migrate_target to new_node_page()
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
ChangeLog v2->v7:
- base code switched from new_node_page() new_page_nodemask()
Signed-off-by: Zi Yan <zi.yan@cs.rutgers.edu>
---
include/linux/migrate.h | 15 ++++++++++++++-
mm/memory_hotplug.c | 4 +++-
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 3e0d405dc842..ce15989521a1 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -35,15 +35,28 @@ static inline struct page *new_page_nodemask(struct page *page,
int preferred_nid, nodemask_t *nodemask)
{
gfp_t gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL;
+ unsigned int order = 0;
+ struct page *new_page = NULL;
if (PageHuge(page))
return alloc_huge_page_nodemask(page_hstate(compound_head(page)),
preferred_nid, nodemask);
+ if (thp_migration_supported() && PageTransHuge(page)) {
+ order = HPAGE_PMD_ORDER;
+ gfp_mask |= GFP_TRANSHUGE;
+ }
+
if (PageHighMem(page) || (zone_idx(page_zone(page)) == ZONE_MOVABLE))
gfp_mask |= __GFP_HIGHMEM;
- return __alloc_pages_nodemask(gfp_mask, 0, preferred_nid, nodemask);
+ new_page = __alloc_pages_nodemask(gfp_mask, order,
+ preferred_nid, nodemask);
+
+ if (new_page && PageTransHuge(page))
+ prep_transhuge_page(new_page);
+
+ return new_page;
}
#ifdef CONFIG_MIGRATION
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index d620d0427b6b..30e980069351 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1416,7 +1416,9 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
if (isolate_huge_page(page, &source))
move_pages -= 1 << compound_order(head);
continue;
- }
+ } else if (thp_migration_supported() && PageTransHuge(page))
+ pfn = page_to_pfn(compound_head(page))
+ + hpage_nr_pages(page) - 1;
if (!get_page_unless_zero(page))
continue;
--
2.11.0
--
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prev parent reply other threads:[~2017-07-17 19:40 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-17 19:39 [PATCH v9 00/10] mm: page migration enhancement for thp Zi Yan
2017-07-17 19:39 ` [PATCH v9 01/10] mm: mempolicy: add queue_pages_required() Zi Yan
2017-07-17 19:39 ` [PATCH v9 02/10] mm: x86: move _PAGE_SWP_SOFT_DIRTY from bit 7 to bit 1 Zi Yan
2017-07-17 19:39 ` [PATCH v9 03/10] mm: thp: introduce separate TTU flag for thp freezing Zi Yan
2017-07-17 19:39 ` [PATCH v9 04/10] mm: thp: introduce CONFIG_ARCH_ENABLE_THP_MIGRATION Zi Yan
2017-07-17 19:39 ` [PATCH v9 05/10] mm: thp: enable thp migration in generic path Zi Yan
2017-07-19 8:04 ` kbuild test robot
2017-07-19 18:39 ` Zi Yan
2017-07-19 20:59 ` Andrew Morton
2017-07-20 2:54 ` Zi Yan
2017-07-17 19:39 ` [PATCH v9 06/10] mm: thp: check pmd migration entry in common path Zi Yan
2017-07-19 8:02 ` Michal Hocko
2017-07-19 15:01 ` Zi Yan
2017-07-17 19:39 ` [PATCH v9 07/10] mm: soft-dirty: keep soft-dirty bits over thp migration Zi Yan
2017-07-17 19:39 ` [PATCH v9 08/10] mm: mempolicy: mbind and migrate_pages support " Zi Yan
2017-07-17 19:39 ` [PATCH v9 09/10] mm: migrate: move_pages() supports " Zi Yan
2017-07-17 19:39 ` Zi Yan [this message]
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