From: Joonsoo Kim Date: Tue, 26 Jul 2016 22:23:46 +0000 (-0700) Subject: mm/page_owner: copy last_migrate_reason in copy_page_owner() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a8efe1c982a22c95884dee1ddf2e721567d1f483;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git mm/page_owner: copy last_migrate_reason in copy_page_owner() 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.kim@lge.com Signed-off-by: Joonsoo Kim Acked-by: Vlastimil Babka Cc: Mel Gorman Cc: Minchan Kim Cc: Alexander Potapenko Cc: Hugh Dickins Cc: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/mm/page_owner.c b/mm/page_owner.c index fedeba88c9cb..437877f5b774 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++)