linux-stable.git/block/blk-sysfs.c, branch linux-6.3.y

block: make kobj_type structures constant

2023-02-09T16:38:16+00:00

Since commit ee6d3dd4ed48 ("driver core: make kobj_type constant.")
the driver core allows the usage of const struct kobj_type.

Take advantage of this to constify the structure definitions to prevent
modification at runtime.

Signed-off-by: Thomas Weißschuh 
Link: https://lore.kernel.org/r/20230208-kobj_type-block-v1-1-0b3eafd7d983@weissschuh.net
Signed-off-by: Jens Axboe

blk-wbt: move private information from blk-wbt.h to blk-wbt.c

2023-02-03T15:20:05+00:00

A large part of blk-wbt.h is only used in blk-wbt.c, so move it there.

Signed-off-by: Christoph Hellwig 
Acked-by: Tejun Heo 
Link: https://lore.kernel.org/r/20230203150400.3199230-11-hch@lst.de
Signed-off-by: Jens Axboe

blk-wbt: pass a gendisk to wbt_init

2023-02-03T15:20:05+00:00

Pass a gendisk to wbt_init to prepare for phasing out usage of the
request_queue in the blk-cgroup code.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Andreas Herrmann 
Acked-by: Tejun Heo 
Link: https://lore.kernel.org/r/20230203150400.3199230-10-hch@lst.de
Signed-off-by: Jens Axboe

blk-wbt: pass a gendisk to wbt_{enable,disable}_default

2023-02-03T15:20:05+00:00

Pass a gendisk to wbt_enable_default and wbt_disable_default to
prepare for phasing out usage of the request_queue in the blk-cgroup
code.

Signed-off-by: Christoph Hellwig 
Reviewed-by: Andreas Herrmann 
Acked-by: Tejun Heo 
Link: https://lore.kernel.org/r/20230203150400.3199230-9-hch@lst.de
Signed-off-by: Jens Axboe

block: save user max_sectors limit

2023-01-29T22:18:33+00:00

The user can set the max_sectors limit to any valid value via sysfs
/sys/block//queue/max_sectors_kb attribute. If the device limits
are ever rescanned, though, the limit reverts back to the potentially
artificially low BLK_DEF_MAX_SECTORS value.

Preserve the user's setting as the max_sectors limit as long as it's
valid. The user can reset back to defaults by writing 0 to the sysfs
file.

Signed-off-by: Keith Busch 
Reviewed-by: Christoph Hellwig 
Reviewed-by: Martin K. Petersen 
Link: https://lore.kernel.org/r/20230105205146.3610282-3-kbusch@meta.com
Signed-off-by: Jens Axboe

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