Re: [PATCH v2 3/7] mm/page_owner: copy last_migrate_reason in copy_page_owner()
From: Vlastimil Babka <hidden>
Date: 2016-06-06 13:31:26
Also in:
lkml
On 05/26/2016 04:37 AM, js1304@gmail.com wrote:
From: Joonsoo Kim <redacted> 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 <redacted>
Acked-by: Vlastimil Babka <redacted>
quoted hunk ↗ jump to hunk
--- 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++)
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