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[PATCH 3/6] mm/page_owner: copy last_migrate_reason in copy_page_owner()

From js1304@gmail.com
Newsgroups linux.kernel
Subject [PATCH 3/6] mm/page_owner: copy last_migrate_reason in copy_page_owner()
Date 2016-05-03 07:30 +0200
Message-ID <ruB4e-1OM-11@gated-at.bofh.it> (permalink)
References <ruB4d-1OM-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Joonsoo Kim <iamjoonsoo.kim@lge.com>

Currently, copy_page_owner() doesn't copy all the owner information.
It skips last_migrate_reason because copy_page_owner() is used for
migration and it will be properly set soon. But, following patch
will use copy_page_owner() and this skip will cause the problem that
allocated page has uninitialied last_migrate_reason. To prevent it,
this patch also copy last_migrate_reason in copy_page_owner().

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
---
 mm/page_owner.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/page_owner.c b/mm/page_owner.c
index 792b56d..6693959 100644
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -101,6 +101,7 @@ void __copy_page_owner(struct page *oldpage, struct page *newpage)
 
 	new_ext->order = old_ext->order;
 	new_ext->gfp_mask = old_ext->gfp_mask;
+	new_ext->last_migrate_reason = old_ext->last_migrate_reason;
 	new_ext->nr_entries = old_ext->nr_entries;
 
 	for (i = 0; i < ARRAY_SIZE(new_ext->trace_entries); i++)
-- 
1.9.1

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[PATCH 0/6] mm/page_owner: use tackdepot to store stacktrace js1304@gmail.com - 2016-05-03 07:30 +0200
  [PATCH 5/6] tools/vm/page_owner: increase temporary buffer size js1304@gmail.com - 2016-05-03 07:30 +0200
  [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace js1304@gmail.com - 2016-05-03 07:30 +0200
    Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Michal Hocko <mhocko@kernel.org> - 2016-05-03 11:00 +0200
      Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2016-05-04 04:20 +0200
        Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2016-05-04 04:40 +0200
          Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Michal Hocko <mhocko@kernel.org> - 2016-05-04 11:30 +0200
            Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Joonsoo Kim <js1304@gmail.com> - 2016-05-04 17:40 +0200
        Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Michal Hocko <mhocko@kernel.org> - 2016-05-04 11:30 +0200
          Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Joonsoo Kim <js1304@gmail.com> - 2016-05-04 17:40 +0200
            Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Joonsoo Kim <js1304@gmail.com> - 2016-05-04 17:50 +0200
              Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Michal Hocko <mhocko@kernel.org> - 2016-05-04 21:50 +0200
            Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Michal Hocko <mhocko@kernel.org> - 2016-05-04 21:50 +0200
              Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Joonsoo Kim <js1304@gmail.com> - 2016-05-10 09:10 +0200
                Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Michal Hocko <mhocko@kernel.org> - 2016-05-10 11:00 +0200
    Re: [PATCH 6/6] mm/page_owner: use stackdepot to store stacktrace Vlastimil Babka <vbabka@suse.cz> - 2016-05-12 14:00 +0200
  [PATCH 3/6] mm/page_owner: copy last_migrate_reason in copy_page_owner() js1304@gmail.com - 2016-05-03 07:30 +0200
    Re: [PATCH 3/6] mm/page_owner: copy last_migrate_reason in  copy_page_owner() Vlastimil Babka <vbabka@suse.cz> - 2016-05-10 17:20 +0200
      Re: [PATCH 3/6] mm/page_owner: copy last_migrate_reason in  copy_page_owner() Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2016-05-12 05:00 +0200
        Re: [PATCH 3/6] mm/page_owner: copy last_migrate_reason in  copy_page_owner() Vlastimil Babka <vbabka@suse.cz> - 2016-05-12 08:50 +0200
  [PATCH 4/6] mm/page_owner: introduce split_page_owner and replace manual handling js1304@gmail.com - 2016-05-03 07:30 +0200
    Re: [PATCH 4/6] mm/page_owner: introduce split_page_owner and replace  manual handling Vlastimil Babka <vbabka@suse.cz> - 2016-05-10 17:20 +0200
  [PATCH 2/6] mm/page_owner: initialize page owner without holding the zone lock js1304@gmail.com - 2016-05-03 07:30 +0200
    Re: [PATCH 2/6] mm/page_owner: initialize page owner without holding  the zone lock Vlastimil Babka <vbabka@suse.cz> - 2016-05-10 17:10 +0200
  [PATCH 1/6] mm/compaction: split freepages without holding the zone lock js1304@gmail.com - 2016-05-03 07:30 +0200
    Re: [PATCH 1/6] mm/compaction: split freepages without holding the  zone lock Vlastimil Babka <vbabka@suse.cz> - 2016-05-10 17:00 +0200
      Re: [PATCH 1/6] mm/compaction: split freepages without holding the  zone lock Joonsoo Kim <iamjoonsoo.kim@lge.com> - 2016-05-12 05:00 +0200

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