[PATCH] remove blk_queue_activity_fn

While working on bidi support at struct request level
I have found that blk_queue_activity_fn is actually never used.
The only user is in ide-probe.c with this code:

	/* enable led activity for disk drives only */
	if (drive->media == ide_disk && hwif->led_act)
		blk_queue_activity_fn(q, hwif->led_act, drive);

And led_act is never initialized anywhere.
(Looking back at older kernels it was used in the PPC arch, but was removed around 2.6.18)
Unless it is all for future use off course.
(this patch is against linux-2.6-block.git as off 2006/12/4)

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 0 insertions, 12 deletions

diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 785e61c9a810..a541b42c08e3 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -129,13 +129,6 @@ struct backing_dev_info *blk_get_backing_dev_info(struct block_device *bdev)
 }
 EXPORT_SYMBOL(blk_get_backing_dev_info);
 
-void blk_queue_activity_fn(request_queue_t *q, activity_fn *fn, void *data)
-{
-        q->activity_fn = fn;
-        q->activity_data = data;
-}
-EXPORT_SYMBOL(blk_queue_activity_fn);
-
 /**
  * blk_queue_prep_rq - set a prepare_request function for queue
  * @q:          queue
@@ -238,8 +231,6 @@ void blk_queue_make_request(request_queue_t * q, make_request_fn * mfn)
          * by default assume old behaviour and bounce for any highmem page
          */
         blk_queue_bounce_limit(q, BLK_BOUNCE_HIGH);
-
-        blk_queue_activity_fn(q, NULL, NULL);
 }
 
 EXPORT_SYMBOL(blk_queue_make_request);
@@ -2696,9 +2687,6 @@ static inline void add_request(request_queue_t * q, struct request * req)
 {
         drive_stat_acct(req, req->nr_sectors, 1);
 
-        if (q->activity_fn)
-                q->activity_fn(q->activity_data, rq_data_dir(req));
-
         /*
          * elevator indicated where it wants this request to be
          * inserted at elevator_merge time