linux-kernel - [PATCH] nfs: add missing CONFIG_MIGRATION for nfs_migrate

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Message-ID: <20160919120917.29844-1-yuchao0@huawei.com>
Date:   Mon, 19 Sep 2016 20:09:17 +0800
From:   Chao Yu <yuchao0@...wei.com>
To:     <trond.myklebust@...marydata.com>, <anna.schumaker@...app.com>
CC:     <linux-nfs@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Chao Yu <yuchao0@...wei.com>
Subject: [PATCH] nfs: add missing CONFIG_MIGRATION for nfs_migrate_page

We'd better to use CONFIG_MIGRATION to cover nfs_migrate_page, otherwise
when CONFIG_MIGRATION is not defined, unused nfs_migrate_page will still
be compiled into kernel.

Signed-off-by: Chao Yu <yuchao0@...wei.com>
---
 fs/nfs/file.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 7d62097..6cfb83e 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -543,7 +543,9 @@ const struct address_space_operations nfs_file_aops = {
 	.invalidatepage = nfs_invalidate_page,
 	.releasepage = nfs_release_page,
 	.direct_IO = nfs_direct_IO,
+#ifdef CONFIG_MIGRATION
 	.migratepage = nfs_migrate_page,
+#endif
 	.launder_page = nfs_launder_page,
 	.is_dirty_writeback = nfs_check_dirty_writeback,
 	.error_remove_page = generic_error_remove_page,
-- 
2.8.2.311.gee88674