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Merge remote-tracking branch 'jens/for-5.10/block' into dm-5.10

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DM depends on these block 5.10 commits:

22ada802ed block: use lcm_not_zero() when stacking chunk_sectors
07d098e6bb block: allow 'chunk_sectors' to be non-power-of-2
021a24460d block: add QUEUE_FLAG_NOWAIT
6abc49468e dm: add support for REQ_NOWAIT and enable it for linear target

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mike Snitzer
2020-09-29 16:27:21 -04:00
parent 4c07ae0ad4 76cffccd60
commit 1471308fb5
129 changed files with 2860 additions and 2143 deletions
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43
drivers/md/dm-table.c
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@ -907,7 +907,7 @@ static int device_is_rq_stackable(struct dm_target *ti, struct dm_dev *dev,
struct request_queue *q = bdev_get_queue(bdev);
/* request-based cannot stack on partitions! */
if (bdev != bdev->bd_contains)
if (bdev_is_partition(bdev))
return false;
return queue_is_mq(q);
@ -1752,6 +1752,33 @@ static bool dm_table_supports_write_zeroes(struct dm_table *t)
return true;
}
static int device_not_nowait_capable(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
struct request_queue *q = bdev_get_queue(dev->bdev);
return q && !blk_queue_nowait(q);
}
static bool dm_table_supports_nowait(struct dm_table *t)
{
struct dm_target *ti;
unsigned i = 0;
while (i < dm_table_get_num_targets(t)) {
ti = dm_table_get_target(t, i++);
if (!dm_target_supports_nowait(ti->type))
return false;
if (!ti->type->iterate_devices ||
ti->type->iterate_devices(ti, device_not_nowait_capable, NULL))
return false;
}
return true;
}
static int device_not_discard_capable(struct dm_target *ti, struct dm_dev *dev,
sector_t start, sector_t len, void *data)
{
@ -1819,7 +1846,7 @@ static int device_requires_stable_pages(struct dm_target *ti,
{
struct request_queue *q = bdev_get_queue(dev->bdev);
return q && bdi_cap_stable_pages_required(q->backing_dev_info);
return q && blk_queue_stable_writes(q);
}
/*
@ -1854,6 +1881,11 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
*/
q->limits = *limits;
if (dm_table_supports_nowait(t))
blk_queue_flag_set(QUEUE_FLAG_NOWAIT, q);
else
blk_queue_flag_clear(QUEUE_FLAG_NOWAIT, q);
if (!dm_table_supports_discards(t)) {
blk_queue_flag_clear(QUEUE_FLAG_DISCARD, q);
/* Must also clear discard limits... */
@ -1904,9 +1936,9 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
* because they do their own checksumming.
*/
if (dm_table_requires_stable_pages(t))
q->backing_dev_info->capabilities |= BDI_CAP_STABLE_WRITES;
blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q);
else
q->backing_dev_info->capabilities &= ~BDI_CAP_STABLE_WRITES;
blk_queue_flag_clear(QUEUE_FLAG_STABLE_WRITES, q);
/*
* Determine whether or not this queue's I/O timings contribute
@ -1929,8 +1961,7 @@ void dm_table_set_restrictions(struct dm_table *t, struct request_queue *q,
}
#endif
/* Allow reads to exceed readahead limits */
q->backing_dev_info->io_pages = limits->max_sectors >> (PAGE_SHIFT - 9);
blk_queue_update_readahead(q);
}
unsigned int dm_table_get_num_targets(struct dm_table *t)