diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 7e794a30806b..b8a1ba3fb957 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -206,7 +206,7 @@ struct iomap_readpage_ctx {
 };
 
 static int iomap_read_inline_data(struct inode *inode, struct page *page,
-		struct iomap *iomap)
+		const struct iomap *iomap)
 {
 	size_t size = i_size_read(inode) - iomap->offset;
 	size_t poff = offset_in_page(iomap->offset);