f2fs: support fiemap for inline_data

There is a FIEMAP_EXTENT_INLINE_DATA, pointed out by Marc.

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index b052e7c..972eab7 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -771,6 +771,12 @@
 	if (ret)
 		return ret;
 
+	if (f2fs_has_inline_data(inode)) {
+		ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len);
+		if (ret != -EAGAIN)
+			return ret;
+	}
+
 	mutex_lock(&inode->i_mutex);
 
 	if (len >= isize) {