linux-stable.git/block/blk-sysfs.c, branch v6.2

block: untangle request_queue refcounting from sysfs

2022-11-30T18:09:00+00:00

The kobject embedded into the request_queue is used for the queue
directory in sysfs, but that is a child of the gendisks directory and is
intimately tied to it.  Move this kobject to the gendisk and use a
refcount_t in the request_queue for the actual request_queue refcounting
that is completely unrelated to the device model.

Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20221114042637.1009333-5-hch@lst.de
Signed-off-by: Jens Axboe

block: fix error unwinding in blk_register_queue

2022-11-30T18:09:00+00:00

blk_register_queue fails to handle errors from blk_mq_sysfs_register,
leaks various resources on errors and accidentally sets queue refs percpu
refcount to percpu mode on kobject_add failure.  Fix all that by
properly unwinding on errors.

Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20221114042637.1009333-4-hch@lst.de
Signed-off-by: Jens Axboe

block: factor out a blk_debugfs_remove helper

2022-11-30T18:09:00+00:00

Split the debugfs removal from blk_unregister_queue into a helper so that
the it can be reused for blk_register_queue error handling.

Signed-off-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20221114042637.1009333-3-hch@lst.de
Signed-off-by: Jens Axboe

blk-crypto: pass a gendisk to blk_crypto_sysfs_{,un}register

2022-11-30T18:09:00+00:00

Prepare for changes to the block layer sysfs handling by passing the
readily available gendisk to blk_crypto_sysfs_{,un}register.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Eric Biggers 
Link: https://lore.kernel.org/r/20221114042637.1009333-2-hch@lst.de
Signed-off-by: Jens Axboe

blk-mq: move the srcu_struct used for quiescing to the tagset

2022-11-02T14:35:34+00:00

All I/O submissions have fairly similar latencies, and a tagset-wide
quiesce is a fairly common operation.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Keith Busch 
Reviewed-by: Ming Lei 
Reviewed-by: Chao Leng 
Reviewed-by: Sagi Grimberg 
Reviewed-by: Hannes Reinecke 
Reviewed-by: Chaitanya Kulkarni 
Link: https://lore.kernel.org/r/20221101150050.3510-12-hch@lst.de
[axboe: fix whitespace]
Signed-off-by: Jens Axboe

blk-wbt: don't show valid wbt_lat_usec in sysfs while wbt is disabled

2022-10-24T00:59:17+00:00

Currently, if wbt is initialized and then disabled by
wbt_disable_default(), sysfs will still show valid wbt_lat_usec, which
will confuse users that wbt is still enabled.

This patch shows wbt_lat_usec as zero if it's disabled.

Signed-off-by: Yu Kuai 
Reported-and-tested-by: Holger Hoffstätte 
Reviewed-by: Christoph Hellwig 
Link: https://lore.kernel.org/r/20221019121518.3865235-5-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe

blk-throttle: pass a gendisk to blk_throtl_register_queue

2022-09-27T01:17:27+00:00

Pass the gendisk to blk_throtl_register_queue as part of moving the
blk-cgroup infrastructure to be gendisk based.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Andreas Herrmann 
Acked-by: Tejun Heo 
Link: https://lore.kernel.org/r/20220921180501.1539876-14-hch@lst.de
Signed-off-by: Jens Axboe

block: move ->bio_split to the gendisk

2022-08-03T03:08:49+00:00

Only non-passthrough requests are split by the block layer and use the
->bio_split bio_set.  Move it from the request_queue to the gendisk.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Damien Le Moal 
Reviewed-by: Johannes Thumshirn 
Link: https://lore.kernel.org/r/20220727162300.3089193-4-hch@lst.de
Signed-off-by: Jens Axboe

block: move zone related fields to struct gendisk

2022-07-06T12:46:26+00:00

Move the zone related fields that are currently stored in
struct request_queue to struct gendisk as these are part of the highlevel
block layer API and are only used for non-passthrough I/O that requires
the gendisk.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Chaitanya Kulkarni 
Reviewed-by: Damien Le Moal 
Reviewed-by: Johannes Thumshirn 
Link: https://lore.kernel.org/r/20220706070350.1703384-17-hch@lst.de
Signed-off-by: Jens Axboe

block: remove queue_max_open_zones and queue_max_active_zones

2022-07-06T12:46:26+00:00

Always use the bdev based helpers instead.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Chaitanya Kulkarni 
Reviewed-by: Damien Le Moal 
Reviewed-by: Johannes Thumshirn 
Link: https://lore.kernel.org/r/20220706070350.1703384-10-hch@lst.de
Signed-off-by: Jens Axboe