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Tue, 07 Jul 2020 00:45:13 -0700 (PDT) From: js1304@gmail.com X-Google-Original-From: iamjoonsoo.kim@lge.com To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, kernel-team@lge.com, Vlastimil Babka , Christoph Hellwig , Roman Gushchin , Mike Kravetz , Naoya Horiguchi , Michal Hocko , Joonsoo Kim Subject: [PATCH v4 01/11] mm/page_isolation: prefer the node of the source page Date: Tue, 7 Jul 2020 16:44:39 +0900 Message-Id: <1594107889-32228-2-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1594107889-32228-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1594107889-32228-1-git-send-email-iamjoonsoo.kim@lge.com> X-Rspamd-Queue-Id: 78F1B20002CEE326 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Joonsoo Kim 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 Acked-by: Michal Hocko Reviewed-by: Vlastimil Babka Signed-off-by: Joonsoo Kim --- 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