Btrfs: don't use migrate page without CONFIG_MIGRATION
Fixes compile error
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 57c9d8e..33b6d45 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -712,8 +712,11 @@
if (page_has_private(page) &&
!try_to_release_page(page, GFP_KERNEL))
return -EAGAIN;
-
+#ifdef CONFIG_MIGRATION
return migrate_page(mapping, newpage, page);
+#else
+ return -ENOSYS;
+#endif
}
static int btree_writepage(struct page *page, struct writeback_control *wbc)
@@ -821,7 +824,9 @@
.releasepage = btree_releasepage,
.invalidatepage = btree_invalidatepage,
.sync_page = block_sync_page,
+#ifdef CONFIG_MIGRATION
.migratepage = btree_migratepage,
+#endif
};
int readahead_tree_block(struct btrfs_root *root, u64 bytenr, u32 blocksize,
