Mark mandatory elevator functions in the biodoc.txt

biodoc.txt mentions that elevator functions marked with * are mandatory, but
no function is marked with *. Mark the 3 functions which should be
implemented by any io scheduler.

Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 5d2480d33b43960ecd923641170fee84348c0d42..ecad6ee7570500cefabee9ee7062e69caca548a5 100644 (file)
--- a/Documentation/block/biodoc.txt
+++ b/Documentation/block/biodoc.txt
@@ -954,14 +954,14 @@ elevator_allow_merge_fn           called whenever the block layer determines
                                results in some sort of conflict internally,
                                this hook allows it to do that.
 
-elevator_dispatch_fn           fills the dispatch queue with ready requests.
+elevator_dispatch_fn*          fills the dispatch queue with ready requests.
                                I/O schedulers are free to postpone requests by
                                not filling the dispatch queue unless @force
                                is non-zero.  Once dispatched, I/O schedulers
                                are not allowed to manipulate the requests -
                                they belong to generic dispatch queue.
 
-elevator_add_req_fn            called to add a new request into the scheduler
+elevator_add_req_fn*           called to add a new request into the scheduler
 
 elevator_queue_empty_fn                returns true if the merge queue is empty.
                                Drivers shouldn't use this, but rather check
@@ -991,7 +991,7 @@ elevator_activate_req_fn    Called when device driver first sees a request.
 elevator_deactivate_req_fn     Called when device driver decides to delay
                                a request by requeueing it.
 
-elevator_init_fn
+elevator_init_fn*
 elevator_exit_fn               Allocate and free any elevator specific storage
                                for a queue.