diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index d264363559db6e7fafd789e26e372ee5766ac05e..af330c31f62752f22c6fe1dc6de5c57f0e02a3d3 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -617,6 +617,8 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
 		if (result)
 			goto out;
 	}
+	if (iocb->ki_pos > i_size_read(inode))
+		nfs_revalidate_mapping(inode, file->f_mapping);
 
 	nfs_start_io_write(inode);
 	result = generic_write_checks(iocb, from);