Messages in this thread Patch in this message | | | From | js1304@gmail ... | Subject | [PATCH v3 1/8] mm/page_isolation: prefer the node of the source page | Date | Tue, 23 Jun 2020 15:13:41 +0900 |
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From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
For locality, it's better to migrate the page to the same node rather than the node of the current caller's cpu.
Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> --- mm/page_isolation.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/mm/page_isolation.c b/mm/page_isolation.c index f6d07c5..aec26d9 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -309,5 +309,7 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, struct page *alloc_migrate_target(struct page *page, unsigned long private) { - return new_page_nodemask(page, numa_node_id(), &node_states[N_MEMORY]); + int nid = page_to_nid(page); + + return new_page_nodemask(page, nid, &node_states[N_MEMORY]); } -- 2.7.4
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