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authorLinus Torvalds <torvalds@linux-foundation.org>2020-10-13 22:12:44 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-13 22:12:44 +0300
commit3ad11d7ac8872b1c8da54494721fad8907ee41f7 (patch)
tree439d7cb75466978be936250c65a27ff05e82d9bc /drivers/md/dm-table.c
parent857d64485e7c920364688a8a6dd0ffe5774327b6 (diff)
parent8858e8d98d5457ba23bcd0d99ce23e272b8b09a1 (diff)
downloadlinux-3ad11d7ac8872b1c8da54494721fad8907ee41f7.tar.xz
Merge tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe: - Series of merge handling cleanups (Baolin, Christoph) - Series of blk-throttle fixes and cleanups (Baolin) - Series cleaning up BDI, seperating the block device from the backing_dev_info (Christoph) - Removal of bdget() as a generic API (Christoph) - Removal of blkdev_get() as a generic API (Christoph) - Cleanup of is-partition checks (Christoph) - Series reworking disk revalidation (Christoph) - Series cleaning up bio flags (Christoph) - bio crypt fixes (Eric) - IO stats inflight tweak (Gabriel) - blk-mq tags fixes (Hannes) - Buffer invalidation fixes (Jan) - Allow soft limits for zone append (Johannes) - Shared tag set improvements (John, Kashyap) - Allow IOPRIO_CLASS_RT for CAP_SYS_NICE (Khazhismel) - DM no-wait support (Mike, Konstantin) - Request allocation improvements (Ming) - Allow md/dm/bcache to use IO stat helpers (Song) - Series improving blk-iocost (Tejun) - Various cleanups (Geert, Damien, Danny, Julia, Tetsuo, Tian, Wang, Xianting, Yang, Yufen, yangerkun) * tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (191 commits) block: fix uapi blkzoned.h comments blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue blk-mq: get rid of the dead flush handle code path block: get rid of unnecessary local variable block: fix comment and add lockdep assert blk-mq: use helper function to test hw stopped block: use helper function to test queue register block: remove redundant mq check block: invoke blk_mq_exit_sched no matter whether have .exit_sched percpu_ref: don't refer to ref->data if it isn't allocated block: ratelimit handle_bad_sector() message blk-throttle: Re-use the throtl_set_slice_end() blk-throttle: Open code __throtl_de/enqueue_tg() blk-throttle: Move service tree validation out of the throtl_rb_first() blk-throttle: Move the list operation after list validation blk-throttle: Fix IO hang for a corner case blk-throttle: Avoid tracking latency if low limit is invalid blk-throttle: Avoid getting the current time if tg->last_finish_time is 0 blk-throttle: Remove a meaningless parameter for throtl_downgrade_state() block: Remove redundant 'return' statement ...
Diffstat (limited to 'drivers/md/dm-table.c')
-rw-r--r--drivers/md/dm-table.c43
1 files changed, 37 insertions, 6 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 229f461e7def..c3be7cb2570c 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -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)