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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2016-07-27 01:23:46 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 02:19:19 +0300
commita8efe1c982a22c95884dee1ddf2e721567d1f483 (patch)
tree29e0e60f4f87264436551ad480e74e6112d970f0 /mm/page_owner.c
parent83358ece26b70f20c0ba2e0e00dc84b0ee24fe6d (diff)
downloadlinux-a8efe1c982a22c95884dee1ddf2e721567d1f483.tar.xz
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 <iamjoonsoo.kim@lge.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Minchan Kim <minchan@kernel.org> Cc: Alexander Potapenko <glider@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_owner.c')
-rw-r--r--mm/page_owner.c1
1 files changed, 1 insertions, 0 deletions
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++)