The patch titled
Subject: mm/page_owner: copy last_migrate_reason in copy_page_owner()
has been added to the -mm tree. Its filename is
mm-page_owner-copy-last_migrate_reason-in-copy_page_owner.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_owner-copy-last_migrate_reason-in-copy_page_owner.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_owner-copy-last_migrate_reason-in-copy_page_owner.patch
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------------------------------------------------------
From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Subject: 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@xxxxxxx
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_owner.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/page_owner.c~mm-page_owner-copy-last_migrate_reason-in-copy_page_owner mm/page_owner.c
--- a/mm/page_owner.c~mm-page_owner-copy-last_migrate_reason-in-copy_page_owner
+++ a/mm/page_owner.c
@@ -118,6 +118,7 @@ void __copy_page_owner(struct page *oldp
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++)
_
Patches currently in -mm which might be from iamjoonsoo.kim@xxxxxxx are
mm-compaction-split-freepages-without-holding-the-zone-lock.patch
mm-page_owner-initialize-page-owner-without-holding-the-zone-lock.patch
mm-page_owner-copy-last_migrate_reason-in-copy_page_owner.patch
mm-page_owner-introduce-split_page_owner-and-replace-manual-handling.patch
tools-vm-page_owner-increase-temporary-buffer-size.patch
mm-page_owner-use-stackdepot-to-store-stacktrace.patch
mm-page_alloc-introduce-post-allocation-processing-on-page-allocator.patch
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