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-rw-r--r--block/elevator.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/block/elevator.c b/block/elevator.c
index 1d0759178e4..e8025b2ec54 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -149,6 +149,13 @@ static void elevator_setup_default(void)
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.
*/