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block: Remove unused definitions

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The ELV_MQUEUE_XXX definitions in include/linux/elevator.h are unused
since the removal of elevator_may_queue_fn in kernel 5.0. Remove these
definitions and also remove the documentation of elevator_may_queue_fn
in Documentiation/block/biodoc.txt.

Acked-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Damien Le Moal 2019-07-11 00:56:08 +09:00 committed by Jens Axboe
parent 3a10f999ff
commit 36847a0054
2 changed files with 0 additions and 14 deletions
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5
Documentation/block/biodoc.txt
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@ -843,11 +843,6 @@ elevator_latter_req_fn These return the request before or after the
elevator_completed_req_fn called when a request is completed.
elevator_may_queue_fn returns true if the scheduler wants to allow the
current context to queue a new request even if
it is over the queue limit. This must be used
very carefully!!
elevator_set_req_fn
elevator_put_req_fn Must be used to allocate and free any elevator
specific storage for a request.

9
include/linux/elevator.h
View File

@ -160,15 +160,6 @@ extern struct request *elv_rb_find(struct rb_root *, sector_t);
#define ELEVATOR_INSERT_FLUSH 5
#define ELEVATOR_INSERT_SORT_MERGE 6
/*
* return values from elevator_may_queue_fn
*/
enum {
ELV_MQUEUE_MAY,
ELV_MQUEUE_NO,
ELV_MQUEUE_MUST,
};
#define rq_end_sector(rq) (blk_rq_pos(rq) + blk_rq_sectors(rq))
#define rb_entry_rq(node) rb_entry((node), struct request, rb_node)