diff options
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index ef7b8f201f73..433bd3f3014c 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -451,15 +451,15 @@ int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode, return r; } - atomic_set(&dd->count, 0); + refcount_set(&dd->count, 1); list_add(&dd->list, &t->devices); } else if (dd->dm_dev->mode != (mode | dd->dm_dev->mode)) { r = upgrade_mode(dd, mode, t->md); if (r) return r; + refcount_inc(&dd->count); } - atomic_inc(&dd->count); *result = dd->dm_dev; return 0; @@ -515,7 +515,7 @@ void dm_put_device(struct dm_target *ti, struct dm_dev *d) dm_device_name(ti->table->md), d->name); return; } - if (atomic_dec_and_test(&dd->count)) { + if (refcount_dec_and_test(&dd->count)) { dm_put_table_device(ti->table->md, d); list_del(&dd->list); kfree(dd); @@ -1000,7 +1000,7 @@ verify_rq_based: list_for_each_entry(dd, devices, list) { struct request_queue *q = bdev_get_queue(dd->dm_dev->bdev); - if (!blk_queue_stackable(q)) { + if (!queue_is_rq_based(q)) { DMERR("table load rejected: including" " non-request-stackable devices"); return -EINVAL; @@ -1847,19 +1847,6 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, */ if (blk_queue_add_random(q) && dm_table_all_devices_attribute(t, device_is_not_random)) queue_flag_clear_unlocked(QUEUE_FLAG_ADD_RANDOM, q); - - /* - * QUEUE_FLAG_STACKABLE must be set after all queue settings are - * visible to other CPUs because, once the flag is set, incoming bios - * are processed by request-based dm, which refers to the queue - * settings. - * Until the flag set, bios are passed to bio-based dm and queued to - * md->deferred where queue settings are not needed yet. - * Those bios are passed to request-based dm at the resume time. - */ - smp_mb(); - if (dm_table_request_based(t)) - queue_flag_set_unlocked(QUEUE_FLAG_STACKABLE, q); } unsigned int dm_table_get_num_targets(struct dm_table *t) |