Messages in this thread Patch in this message | | | From | Nikanth Karthikesan <> | Subject | [PATCH] Mark mandatory elevator functions in the biodoc.txt | Date | Mon, 19 Jan 2009 21:23:58 +0530 |
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biodoc.txt mentions that elevator functions marked with * are mandatory, but no function is marked with *.
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
--- diff --git a/Documentation/block/biodoc.txt b/Documentation/block/biodoc.txt index 3c5434c..5e51217 100644 --- a/Documentation/block/biodoc.txt +++ b/Documentation/block/biodoc.txt @@ -953,14 +953,14 @@ 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 @@ -990,7 +990,7 @@ 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.
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