linux-kernel - [PATCH v2 5/5] mm/page_alloc: Only call pgdat_set_deferred

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Date:   Thu, 19 Jul 2018 15:27:40 +0200
From:   osalvador@...hadventures.net
To:     akpm@...ux-foundation.org
Cc:     pasha.tatashin@...cle.com, mhocko@...e.com, vbabka@...e.cz,
        aaron.lu@...el.com, iamjoonsoo.kim@....com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Oscar Salvador <osalvador@...e.de>
Subject: [PATCH v2 5/5] mm/page_alloc: Only call pgdat_set_deferred_range when the system boots

From: Oscar Salvador <osalvador@...e.de>

We should only care about deferred initialization when booting.

Signed-off-by: Oscar Salvador <osalvador@...e.de>
---
 mm/page_alloc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d77bc2a7ec2c..5911b64a88ab 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6419,7 +6419,8 @@ void __paginginit free_area_init_node(int nid, unsigned long *zones_size,
 				  zones_size, zholes_size);
 
 	alloc_node_mem_map(pgdat);
-	pgdat_set_deferred_range(pgdat);
+	if (system_state == SYSTEM_BOOTING)
+		pgdat_set_deferred_range(pgdat);
 
 	free_area_init_core(pgdat);
 }
-- 
2.13.6