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| author | Mike Snitzer <snitzer@redhat.com> | 2015-02-24 03:10:15 +0300 |
|---|---|---|
| committer | Mike Snitzer <snitzer@redhat.com> | 2015-03-31 19:03:49 +0300 |
| commit | d56b9b28a4a5d9e61dd99154b986e760373e2392 (patch) | |
| tree | aea0bb97d20c9457849cd57773273fe67274f81b /drivers/md/dm.c | |
| parent | 52b09914af86fa3e728175c1125c91520e437b2f (diff) | |
| download | linux-d56b9b28a4a5d9e61dd99154b986e760373e2392.tar.xz | |
dm: remove request-based DM queue's lld_busy_fn hook
DM multipath is the only caller of blk_lld_busy() -- which calls a
queue's lld_busy_fn hook. Request-based DM doesn't support stacking
multipath devices so there is no reason to register the lld_busy_fn hook
on a multipath device's queue using blk_queue_lld_busy().
As such, remove functions dm_lld_busy and dm_table_any_busy_target.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 17 |
1 files changed, 0 insertions, 17 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index e7095ebb8d64..cc8aed2e3f88 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2006,22 +2006,6 @@ out: dm_put_live_table(md, srcu_idx); } -static int dm_lld_busy(struct request_queue *q) -{ - int r; - struct mapped_device *md = q->queuedata; - struct dm_table *map = dm_get_live_table_fast(md); - - if (!map || test_bit(DMF_BLOCK_IO_FOR_SUSPEND, &md->flags)) - r = 1; - else - r = dm_table_any_busy_target(map); - - dm_put_live_table_fast(md); - - return r; -} - static int dm_any_congested(void *congested_data, int bdi_bits) { int r = bdi_bits; @@ -2545,7 +2529,6 @@ static int dm_init_request_based_queue(struct mapped_device *md) dm_init_md_queue(md); blk_queue_softirq_done(md->queue, dm_softirq_done); blk_queue_prep_rq(md->queue, dm_prep_fn); - blk_queue_lld_busy(md->queue, dm_lld_busy); /* Also initialize the request-based DM worker thread */ init_kthread_worker(&md->kworker); |