- if (rc || bytes_written < bytes_to_write) {
- cERROR(1, "Write2 ret %d, wrote %d",
- rc, bytes_written);
- mapping_set_error(mapping, rc);
- } else {
+ cFYI(1, "Write2 rc=%d, wrote=%u", rc, bytes_written);
+
+ /*
+ * For now, treat a short write as if nothing got
+ * written. A zero length write however indicates
+ * ENOSPC or EFBIG. We have no way to know which
+ * though, so call it ENOSPC for now. EFBIG would
+ * get translated to AS_EIO anyway.
+ *
+ * FIXME: make it take into account the data that did
+ * get written
+ */
+ if (rc == 0) {
+ if (bytes_written == 0)
+ rc = -ENOSPC;
+ else if (bytes_written < bytes_to_write)
+ rc = -EAGAIN;
+ }
+
+ /* retry on data-integrity flush */
+ if (wbc->sync_mode == WB_SYNC_ALL && rc == -EAGAIN)
+ goto retry_write;
+
+ /* fix the stats and EOF */
+ if (bytes_written > 0) {