linux-kernel - [PATCH v12 7/8] mm: export symbol of next_zone and first_online

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Date:   Wed, 12 Jul 2017 20:40:20 +0800
From:   Wei Wang <wei.w.wang@...el.com>
To:     linux-kernel@...r.kernel.org, qemu-devel@...gnu.org,
        virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        linux-mm@...ck.org, mst@...hat.com, david@...hat.com,
        cornelia.huck@...ibm.com, akpm@...ux-foundation.org,
        mgorman@...hsingularity.net, aarcange@...hat.com,
        amit.shah@...hat.com, pbonzini@...hat.com, wei.w.wang@...el.com,
        liliang.opensource@...il.com
Cc:     virtio-dev@...ts.oasis-open.org, yang.zhang.wz@...il.com,
        quan.xu@...yun.com
Subject: [PATCH v12 7/8] mm: export symbol of next_zone and first_online_pgdat

This patch enables for_each_zone()/for_each_populated_zone() to be
invoked by a kernel module.

Signed-off-by: Wei Wang <wei.w.wang@...el.com>
---
 mm/mmzone.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/mmzone.c b/mm/mmzone.c
index a51c0a6..08a2a3a 100644
--- a/mm/mmzone.c
+++ b/mm/mmzone.c
@@ -13,6 +13,7 @@ struct pglist_data *first_online_pgdat(void)
 {
 	return NODE_DATA(first_online_node);
 }
+EXPORT_SYMBOL_GPL(first_online_pgdat);
 
 struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
 {
@@ -41,6 +42,7 @@ struct zone *next_zone(struct zone *zone)
 	}
 	return zone;
 }
+EXPORT_SYMBOL_GPL(next_zone);
 
 static inline int zref_in_nodemask(struct zoneref *zref, nodemask_t *nodes)
 {
-- 
2.7.4