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| author |   Jens Axboe <axboe@suse.de> | 2005-10-28 08:30:39 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@nelson.home.kernel.dk> | 2005-10-28 08:48:23 +0200 |
| commit | 64521d1a3ba7cc7fe4ab5640da83d88144f05340 (patch) | |
| tree | 566f61ed9bbdc1c6ad245cb186fdd8c810a58f25 /drivers | |
| parent | [BLOCK] Reimplement elevator switch (diff) | |
| download | linux-dev-64521d1a3ba7cc7fe4ab5640da83d88144f05340.tar.xz linux-dev-64521d1a3ba7cc7fe4ab5640da83d88144f05340.zip | |
[BLOCK] elevator switch fixes/cleanup
- 100msec sleep is a little excessive, lots of requests can complete
in that timeframe. Use 10msec instead.
- Rename QUEUE_FLAG_BYPASS to QUEUE_FLAG_ELVSWITCH to indicate what
is going on.
Signed-off-by: Jens Axboe <axboe@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/elevator.c | 8 | ||||
| -rw-r--r-- | drivers/block/ll_rw_blk.c | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/block/elevator.c b/drivers/block/elevator.c index 272d93946621..cf9bedbb761b 100644 --- a/drivers/block/elevator.c +++ b/drivers/block/elevator.c @@ -671,14 +671,14 @@ static void elevator_switch(request_queue_t *q, struct elevator_type *new_e) */ spin_lock_irq(q->queue_lock); - set_bit(QUEUE_FLAG_BYPASS, &q->queue_flags); + set_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); while (q->elevator->ops->elevator_dispatch_fn(q, 1)) ; while (q->rq.elvpriv) { spin_unlock_irq(q->queue_lock); - msleep(100); + msleep(10); spin_lock_irq(q->queue_lock); } @@ -703,7 +703,7 @@ static void elevator_switch(request_queue_t *q, struct elevator_type *new_e) * finally exit old elevator and turn off BYPASS. */ elevator_exit(old_elevator); - clear_bit(QUEUE_FLAG_BYPASS, &q->queue_flags); + clear_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); return; fail_register: @@ -716,7 +716,7 @@ fail_register: fail: q->elevator = old_elevator; elv_register_queue(q); - clear_bit(QUEUE_FLAG_BYPASS, &q->queue_flags); + clear_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); kfree(e); error: elevator_put(new_e); diff --git a/drivers/block/ll_rw_blk.c b/drivers/block/ll_rw_blk.c index f7c9931cb380..fc12d019b19d 100644 --- a/drivers/block/ll_rw_blk.c +++ b/drivers/block/ll_rw_blk.c @@ -1940,7 +1940,7 @@ get_rq: if (rl->count[rw] >= queue_congestion_on_threshold(q)) set_queue_congested(q, rw); - priv = !test_bit(QUEUE_FLAG_BYPASS, &q->queue_flags); + priv = !test_bit(QUEUE_FLAG_ELVSWITCH, &q->queue_flags); if (priv) rl->elvpriv++; |