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authorJoonsoo Kim <iamjoonsoo.kim@lge.com>2016-07-26 15:23:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-26 16:19:19 -0700
commit83358ece26b70f20c0ba2e0e00dc84b0ee24fe6d (patch)
tree17c1a4620b524345a45d90239413e5e87d3e7b5e /mm/compaction.c
parent66c64223ad4e7a4a9161fcd9606426d9f57227ca (diff)
downloadlinux-83358ece26b70f20c0ba2e0e00dc84b0ee24fe6d.tar.bz2
mm/page_owner: initialize page owner without holding the zone lock
It's not necessary to initialized page_owner with holding the zone lock. It would cause more contention on the zone lock although it's not a big problem since it is just debug feature. But, it is better than before so do it. This is also preparation step to use stackdepot in page owner feature. Stackdepot allocates new pages when there is no reserved space and holding the zone lock in this case will cause deadlock. Link: http://lkml.kernel.org/r/1464230275-25791-2-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/compaction.c')
-rw-r--r--mm/compaction.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/compaction.c b/mm/compaction.c
index 3cda95451d93..4ae1294068a8 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -19,6 +19,7 @@
#include <linux/kasan.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
+#include <linux/page_owner.h>
#include "internal.h"
#ifdef CONFIG_COMPACTION
@@ -79,6 +80,8 @@ static void map_pages(struct list_head *list)
arch_alloc_page(page, order);
kernel_map_pages(page, nr_pages, 1);
kasan_alloc_pages(page, order);
+
+ set_page_owner(page, order, __GFP_MOVABLE);
if (order)
split_page(page, order);