diff options
Diffstat (limited to 'drivers/md/dm-table.c')
| -rw-r--r-- | drivers/md/dm-table.c | 71 |
1 files changed, 29 insertions, 42 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 6554d9148927..d9b00b8565c6 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -18,6 +18,8 @@ #include <linux/mutex.h> #include <linux/delay.h> #include <linux/atomic.h> +#include <linux/blk-mq.h> +#include <linux/mount.h> #define DM_MSG_PREFIX "table" @@ -372,23 +374,18 @@ int dm_get_device(struct dm_target *ti, const char *path, fmode_t mode, int r; dev_t uninitialized_var(dev); struct dm_dev_internal *dd; - unsigned int major, minor; struct dm_table *t = ti->table; - char dummy; + struct block_device *bdev; BUG_ON(!t); - if (sscanf(path, "%u:%u%c", &major, &minor, &dummy) == 2) { - /* Extract the major/minor numbers */ - dev = MKDEV(major, minor); - if (MAJOR(dev) != major || MINOR(dev) != minor) - return -EOVERFLOW; + /* convert the path to a device */ + bdev = lookup_bdev(path); + if (IS_ERR(bdev)) { + dev = name_to_dev_t(path); + if (!dev) + return -ENODEV; } else { - /* convert the path to a device */ - struct block_device *bdev = lookup_bdev(path); - - if (IS_ERR(bdev)) - return PTR_ERR(bdev); dev = bdev->bd_dev; bdput(bdev); } @@ -939,7 +936,7 @@ bool dm_table_mq_request_based(struct dm_table *t) return dm_table_get_type(t) == DM_TYPE_MQ_REQUEST_BASED; } -static int dm_table_alloc_md_mempools(struct dm_table *t) +static int dm_table_alloc_md_mempools(struct dm_table *t, struct mapped_device *md) { unsigned type = dm_table_get_type(t); unsigned per_bio_data_size = 0; @@ -957,7 +954,7 @@ static int dm_table_alloc_md_mempools(struct dm_table *t) per_bio_data_size = max(per_bio_data_size, tgt->per_bio_data_size); } - t->mempools = dm_alloc_md_mempools(type, t->integrity_supported, per_bio_data_size); + t->mempools = dm_alloc_md_mempools(md, type, t->integrity_supported, per_bio_data_size); if (!t->mempools) return -ENOMEM; @@ -1127,7 +1124,7 @@ int dm_table_complete(struct dm_table *t) return r; } - r = dm_table_alloc_md_mempools(t); + r = dm_table_alloc_md_mempools(t, t->md); if (r) DMERR("unable to allocate mempools"); @@ -1339,14 +1336,14 @@ static bool dm_table_supports_flush(struct dm_table *t, unsigned flush) continue; if (ti->flush_supported) - return 1; + return true; if (ti->type->iterate_devices && ti->type->iterate_devices(ti, device_flush_capable, &flush)) - return 1; + return true; } - return 0; + return false; } static bool dm_table_discard_zeroes_data(struct dm_table *t) @@ -1359,10 +1356,10 @@ static bool dm_table_discard_zeroes_data(struct dm_table *t) ti = dm_table_get_target(t, i++); if (ti->discard_zeroes_data_unsupported) - return 0; + return false; } - return 1; + return true; } static int device_is_nonrot(struct dm_target *ti, struct dm_dev *dev, @@ -1408,10 +1405,10 @@ static bool dm_table_all_devices_attribute(struct dm_table *t, if (!ti->type->iterate_devices || !ti->type->iterate_devices(ti, func, NULL)) - return 0; + return false; } - return 1; + return true; } static int device_not_write_same_capable(struct dm_target *ti, struct dm_dev *dev, @@ -1468,14 +1465,14 @@ static bool dm_table_supports_discards(struct dm_table *t) continue; if (ti->discards_supported) - return 1; + return true; if (ti->type->iterate_devices && ti->type->iterate_devices(ti, device_discard_capable, NULL)) - return 1; + return true; } - return 0; + return false; } void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, @@ -1677,20 +1674,6 @@ int dm_table_any_congested(struct dm_table *t, int bdi_bits) return r; } -int dm_table_any_busy_target(struct dm_table *t) -{ - unsigned i; - struct dm_target *ti; - - for (i = 0; i < t->num_targets; i++) { - ti = t->targets + i; - if (ti->type->busy && ti->type->busy(ti)) - return 1; - } - - return 0; -} - struct mapped_device *dm_table_get_md(struct dm_table *t) { return t->md; @@ -1709,9 +1692,13 @@ void dm_table_run_md_queue_async(struct dm_table *t) md = dm_table_get_md(t); queue = dm_get_md_queue(md); if (queue) { - spin_lock_irqsave(queue->queue_lock, flags); - blk_run_queue_async(queue); - spin_unlock_irqrestore(queue->queue_lock, flags); + if (queue->mq_ops) + blk_mq_run_hw_queues(queue, true); + else { + spin_lock_irqsave(queue->queue_lock, flags); + blk_run_queue_async(queue); + spin_unlock_irqrestore(queue->queue_lock, flags); + } } } EXPORT_SYMBOL(dm_table_run_md_queue_async); |