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mm/page_owner: copy last_migrate_reason in copy_page_owner()

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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().

Change-Id: Ibaf1320c296f808098481a29bde3147390199b90
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>
Git-commit: a8efe1c982a22c95884dee1ddf2e721567d1f483
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Prakash Gupta <guptap@codeaurora.org>
This commit is contained in:
Joonsoo Kim 2016-07-26 15:23:46 -07:00 • committed by Prakash Gupta
parent 5437536c75
commit dac6f39dc8
1 changed files with 1 additions and 0 deletions
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mm/page_owner.c
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@ -105,6 +105,7 @@ void __copy_page_owner(struct page *oldpage, struct page *newpage)
new_ext->order = old_ext->order; new_ext->order = old_ext->order;
new_ext->gfp_mask = old_ext->gfp_mask; 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; new_ext->nr_entries = old_ext->nr_entries;
for (i = 0; i < ARRAY_SIZE(new_ext->trace_entries); i++) for (i = 0; i < ARRAY_SIZE(new_ext->trace_entries); i++)