diff --git a/mm/filemap.c b/mm/filemap.c
index dc92647f62a9..20e6c89e5fa9 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2604,7 +2604,7 @@ ssize_t filemap_read(struct kiocb *iocb, struct iov_iter *iter,
 	if (unlikely(!iov_iter_count(iter)))
 		return 0;
 
-	iov_iter_truncate(iter, inode->i_sb->s_maxbytes);
+	iov_iter_truncate(iter, inode->i_sb->s_maxbytes - iocb->ki_pos);
 	folio_batch_init(&fbatch);
 
 	do {