engines/libaio: modify getevents and commit error handling
If we get some error other than -EAGAIN in getevents(), treat
it as fatal and break.
If we get -ENOMEM on submission, reap events if we can. If we
have no pending events, treat it as a fatal error and break.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/engines/libaio.c b/engines/libaio.c
index 31c850e..6c5d73e 100644
--- a/engines/libaio.c
+++ b/engines/libaio.c
@@ -167,6 +167,8 @@
events += r;
else if (r == -EAGAIN)
usleep(100);
+ else
+ break;
} while (events < min);
return r < 0 ? r : events;
@@ -283,6 +285,15 @@
}
usleep(1);
continue;
+ } else if (ret == -ENOMEM) {
+ /*
+ * If we get -ENOMEM, reap events if we can. If
+ * we cannot, treat it as a fatal event since there's
+ * nothing we can do about it.
+ */
+ if (ld->queued)
+ ret = 0;
+ break;
} else
break;
} while (ld->queued);