diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index c298a7b8a1ce745363c62f686196e6859d3d7b30..2862a75fb9498ff8774f28cde4eb843d2b8cf658 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -970,6 +970,7 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
 			goto retry_snap;
 		}
 	} else {
+		loff_t old_size = inode->i_size;
 		/*
 		 * No need to acquire the i_truncate_mutex. Because
 		 * the MDS revokes Fwb caps before sending truncate
@@ -980,6 +981,8 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
 		written = generic_file_buffered_write(iocb, iov, nr_segs,
 						      pos, &iocb->ki_pos,
 						      count, 0);
+		if (inode->i_size > old_size)
+			ceph_fscache_update_objectsize(inode);
 		mutex_unlock(&inode->i_mutex);
 	}