linux-kernel - [PATCH] mm/memory_hotplug: move definitions of {set,clear}_zone

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Message-Id: <20191106123911.7435-1-ben.dooks@codethink.co.uk>
Date:   Wed,  6 Nov 2019 12:39:11 +0000
From:   "Ben Dooks (Codethink)" <ben.dooks@...ethink.co.uk>
To:     linux-kernel@...ts.codethink.co.uk
Cc:     "Ben Dooks (Codethink)" <ben.dooks@...ethink.co.uk>,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] mm/memory_hotplug: move definitions of {set,clear}_zone_contiguous

The {set,clear}_zone_contiguous are built whatever the
configuraiton so move the definitions outside the current
ifdef to avoid the following compiler warnings:

mm/page_alloc.c:1550:6: warning: no previous prototype for âset_zone_contiguousâ [-Wmissing-prototypes]
mm/page_alloc.c:1571:6: warning: no previous prototype for âclear_zone_contiguousâ [-Wmissing-prototypes]

Signed-off-by: Ben Dooks (Codethink) <ben.dooks@...ethink.co.uk>
---
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: David Hildenbrand <david@...hat.com>
Cc: linux-mm@...ck.org
Cc: linux-kernel@...r.kernel.org
---
 include/linux/memory_hotplug.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h
index f46ea71b4ffd..6a6456040802 100644
--- a/include/linux/memory_hotplug.h
+++ b/include/linux/memory_hotplug.h
@@ -229,9 +229,6 @@ void put_online_mems(void);
 void mem_hotplug_begin(void);
 void mem_hotplug_done(void);
 
-extern void set_zone_contiguous(struct zone *zone);
-extern void clear_zone_contiguous(struct zone *zone);
-
 #else /* ! CONFIG_MEMORY_HOTPLUG */
 #define pfn_to_online_page(pfn)			\
 ({						\
@@ -339,6 +336,9 @@ static inline int remove_memory(int nid, u64 start, u64 size)
 static inline void __remove_memory(int nid, u64 start, u64 size) {}
 #endif /* CONFIG_MEMORY_HOTREMOVE */
 
+extern void set_zone_contiguous(struct zone *zone);
+extern void clear_zone_contiguous(struct zone *zone);
+
 extern void __ref free_area_init_core_hotplug(int nid);
 extern int __add_memory(int nid, u64 start, u64 size);
 extern int add_memory(int nid, u64 start, u64 size);
-- 
2.24.0.rc1