linux-kernel - [PATCH] migrate: Wrap CONFIG_DEVICE_PRIVATE dependent function declarations with ifdef

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Date:   Wed,  9 Feb 2022 09:34:07 +0000
From:   SeongJae Park <sj@...nel.org>
To:     akpm@...ux-foundation.org
Cc:     shy828301@...il.com, ziy@...dia.com, ying.huang@...el.com,
        willy@...radead.org, linux-mm@...r.kernel.org,
        linux-kernel@...r.kernel.org, SeongJae Park <sj@...nel.org>
Subject: [PATCH] migrate: Wrap CONFIG_DEVICE_PRIVATE dependent function declarations with ifdef

'migrate_vma_{setup,pages,finalize}()' functions are defined under
CONFIG_DEVICE_PRIVATE, but their declarations are not.  This commit
wraps the declaration under the config to minimize confusion.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 include/linux/migrate.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/migrate.h b/include/linux/migrate.h
index 66a34eae8cb6..f8fa7db83e23 100644
--- a/include/linux/migrate.h
+++ b/include/linux/migrate.h
@@ -162,9 +162,14 @@ struct migrate_vma {
 	unsigned long		flags;
 };
 
+#ifdef CONFIG_DEVICE_PRIVATE
+
 int migrate_vma_setup(struct migrate_vma *args);
 void migrate_vma_pages(struct migrate_vma *migrate);
 void migrate_vma_finalize(struct migrate_vma *migrate);
+
+#endif /* CONFIG_DEVICE_PRIVATE */
+
 int next_demotion_node(int node);
 
 #else /* CONFIG_MIGRATION disabled: */
-- 
2.17.1