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>

1 files changed, 3 insertions, 3 deletions

diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt
index 5d2480d33b43..ecad6ee75705 100644
--- 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.