[BLOCK] elevator: Make elevator=as work again for anticipatory
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Signed-off-by: Jens Axboe <axboe@suse.de>
diff --git a/block/elevator.c b/block/elevator.c
index 1d07591..e8025b2 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -149,6 +149,13 @@
if (!chosen_elevator[0])
strcpy(chosen_elevator, CONFIG_DEFAULT_IOSCHED);
+ /*
+ * Be backwards-compatible with previous kernels, so users
+ * won't get the wrong elevator.
+ */
+ if (!strcmp(chosen_elevator, "as"))
+ strcpy(chosen_elevator, "anticipatory");
+
/*
* If the given scheduler is not available, fall back to no-op.
*/