The commit is pushed to "branch-rh7-3.10.0-862.14.4.vz7.72.x-ovz" and will
appear at https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-862.14.4.vz7.72.11
------>
commit f60665481d083df340c4d332d4074d7d84a6d715
Author: David Rientjes <rient...@google.com>
Date: Tue Apr 14 15:46:52 2015 -0700
ms/mm, mempolicy: migrate_to_node should only migrate to node
migrate_to_node() is intended to migrate a page from one source node to
a target node.
Today, migrate_to_node() could end up migrating to any node, not only
the target node. This is because the page migration allocator,
new_node_page() does not pass __GFP_THISNODE to
alloc_pages_exact_node(). This causes the target node to be preferred
but allows fallback to any other node in order of affinity.
Prevent this by allocating with __GFP_THISNODE. If memory is not
available, -ENOMEM will be returned as appropriate.
Signed-off-by: David Rientjes <rient...@google.com>
Reviewed-by: Naoya Horiguchi <n-horigu...@ah.jp.nec.com>
Cc: Mel Gorman <m...@csn.ul.ie>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
https://jira.sw.ru/browse/PSBM-89512
https://access.redhat.com/solutions/3538691
(cherry picked from commit b360edb43f8ed50aa7b8c9aae7d7557a1a6e32c8)
Signed-off-by: Konstantin Khorenko <khore...@virtuozzo.com>
---
mm/mempolicy.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 400190f8ad67..99834097dca0 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1024,7 +1024,8 @@ static struct page *new_node_page(struct page *page,
unsigned long node, int **x
return alloc_huge_page_node(page_hstate(compound_head(page)),
node);
else
- return alloc_pages_exact_node(node, GFP_HIGHUSER_MOVABLE, 0);
+ return alloc_pages_exact_node(node, GFP_HIGHUSER_MOVABLE |
+ __GFP_THISNODE, 0);
}
/*
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