From: Joonsoo Kim <iamjoonsoo....@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().
Link: http://lkml.kernel.org/r/1464230275-25791-3-git-send-email-iamjoonsoo....@lge.com Signed-off-by: Joonsoo Kim <iamjoonsoo....@lge.com> Acked-by: Vlastimil Babka <vba...@suse.cz> Cc: Mel Gorman <mgor...@techsingularity.net> Cc: Minchan Kim <minc...@kernel.org> Cc: Alexander Potapenko <gli...@google.com> Cc: Hugh Dickins <hu...@google.com> Cc: Michal Hocko <mho...@kernel.org> --- mm/page_owner.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/page_owner.c b/mm/page_owner.c index c6cda3e..73e202f 100644 --- a/mm/page_owner.c +++ b/mm/page_owner.c @@ -118,6 +118,7 @@ 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
