nfs: cover ->migratepage with CONFIG_MIGRATION

It will be more clean to use CONFIG_MIGRATION to cover nfs' private
.migratepage in nfs_file_aops like we do in other part of nfs
operations.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index ca699ddc11c1..580d1c588228 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,