microsoft
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WSL2-Linux-Kernel
зеркало из https://github.com/microsoft/WSL2-Linux-Kernel.git
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WSL2-Linux-Kernel/block
История
Luis Chamberlain 26e06f5b13 block: update __register_blkdev() probe documentation 
__register_blkdev() is used to register a probe callback, and
that callback is typically used to call add_disk(). Now that
we are able to capture errors for add_disk(), we need to fix
those probe calls where add_disk() fails and clean up resources.

We don't extend the probe call to return the error given:

1) we'd have to always special-case the case where the disk
   was already present, as otherwise concurrent requests to
   open an existing block device would fail, and this would be
   a userspace visible change
2) the error from ilookup() on blkdev_get_no_open() is sufficient
3) The only thing the probe call is used for is to support
   pre-devtmpfs, pre-udev semantics that want to create disks when
   their pre-created device node is accessed, and so we don't care
   for failures on probe there.

Expand documentation for the probe callback to ensure users cleanup
resources if add_disk() is used and to clarify this interface may be
removed in the future.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20211103230437.1639990-12-mcgrof@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
 		2021-11-04 05:48:50 -06:00
..
partitions block: convert the rest of block to bdev_get_queue 2021-10-18 06:17:37 -06:00
Kconfig block: move menu "Partition type" to block/partitions/Kconfig 2021-10-18 06:17:35 -06:00
Kconfig.iosched block: simplify Kconfig files 2021-10-18 06:17:35 -06:00
Makefile block: move CONFIG_BLOCK guard to top Makefile 2021-10-18 06:17:35 -06:00
badblocks.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
bdev.c block: use bdev_get_queue() in bdev.c 2021-10-18 06:17:36 -06:00
bfq-cgroup.c block: move elevator.h to block/ 2021-10-18 06:17:01 -06:00
bfq-iosched.c blk-mq: Stop using pointers for blk_mq_tags bitmap tags 2021-10-18 06:17:03 -06:00
bfq-iosched.h block, bfq: cleanup the repeated declaration 2021-08-25 06:45:33 -06:00
bfq-wf2q.c block: Introduce IOPRIO_NR_LEVELS 2021-08-18 07:21:12 -06:00
bio-integrity.c block: convert the rest of block to bdev_get_queue 2021-10-18 06:17:37 -06:00
bio.c block: don't bother iter advancing a fully done bio 2021-10-18 08:50:16 -06:00
blk-cgroup-rwstat.c blk-cgroup: Fix the recursive blkg rwstat 2021-03-05 11:32:15 -07:00
blk-cgroup-rwstat.h
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blk-cgroup.c block: convert the rest of block to bdev_get_queue 2021-10-18 06:17:37 -06:00
blk-core.c block: add a struct io_comp_batch argument to fops->iopoll() 2021-10-18 14:40:40 -06:00
blk-crypto-fallback.c block: move struct request to blk-mq.h 2021-10-18 06:17:02 -06:00
blk-crypto-internal.h block: move struct request to blk-mq.h 2021-10-18 06:17:02 -06:00
blk-crypto.c block: convert the rest of block to bdev_get_queue 2021-10-18 06:17:37 -06:00
blk-exec.c block: add a struct io_comp_batch argument to fops->iopoll() 2021-10-18 14:40:40 -06:00
blk-flush.c blk-mq: fix is_flush_rq 2021-08-17 20:17:34 -06:00
blk-integrity.c block: move integrity handling out of <linux/blkdev.h> 2021-10-18 06:17:02 -06:00
blk-ioc.c block: remove retry loop in ioc_release_fn() 2020-07-16 10:22:15 -06:00
blk-iocost.c block: convert the rest of block to bdev_get_queue 2021-10-18 06:17:37 -06:00
blk-iolatency.c mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h> 2021-10-18 06:17:01 -06:00
blk-ioprio.c block: Introduce the ioprio rq-qos policy 2021-06-21 15:03:40 -06:00
blk-ioprio.h block: Introduce the ioprio rq-qos policy 2021-06-21 15:03:40 -06:00
blk-lib.c block: export blk_next_bio() 2021-06-17 15:51:20 +02:00
blk-map.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
blk-merge.c block: handle fast path of bio splitting inline 2021-10-18 06:17:36 -06:00
blk-mq-cpumap.c blk-mq: remove the calling of local_memory_node() 2020-10-20 07:08:17 -06:00
blk-mq-debugfs-zoned.c
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blk-mq-debugfs.c block: remove some blk_mq_hw_ctx debugfs entries 2021-10-18 14:40:33 -06:00
blk-mq-debugfs.h
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blk-mq-pci.c
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blk-mq-rdma.c
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blk-mq-sched.c block: remove debugfs blk_mq_ctx dispatched/merged/completed attributes 2021-10-18 14:39:48 -06:00
blk-mq-sched.h block: store elevator state in request 2021-10-18 08:51:52 -06:00
blk-mq-sysfs.c block: remove blk-mq-sysfs dead code 2021-08-02 13:37:29 -06:00
blk-mq-tag.c block: add support for blk_mq_end_request_batch() 2021-10-18 14:40:43 -06:00
blk-mq-tag.h block: add support for blk_mq_end_request_batch() 2021-10-18 14:40:43 -06:00
blk-mq-virtio.c
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blk-mq.c block: add support for blk_mq_end_request_batch() 2021-10-18 14:40:43 -06:00
blk-mq.h block: add a struct io_comp_batch argument to fops->iopoll() 2021-10-18 14:40:40 -06:00
blk-pm.c scsi: block: Fix a race in the runtime power management code 2020-12-09 11:41:41 -05:00
blk-pm.h block: Remove unused blk_pm_*() function definitions 2021-02-22 06:33:48 -07:00
blk-rq-qos.c rq-qos: fix missed wake-ups in rq_qos_throttle try two 2021-06-08 15:12:57 -06:00
blk-rq-qos.h block: only mark bio as tracked if it really is tracked 2021-10-18 08:50:47 -06:00
blk-settings.c block: add an explicit ->disk backpointer to the request_queue 2021-08-23 12:54:31 -06:00
blk-stat.c blk-stat: make q->stats->lock irqsafe 2020-09-01 16:48:46 -06:00
blk-stat.h
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blk-sysfs.c block: don't allow writing to the poll queue attribute 2021-10-18 06:17:36 -06:00
blk-throttle.c block: convert the rest of block to bdev_get_queue 2021-10-18 06:17:37 -06:00
blk-throttle.h block: move blk-throtl fast path inline 2021-10-18 06:17:03 -06:00
blk-timeout.c block: blk-timeout: delete duplicated word 2020-07-31 16:29:47 -06:00
blk-wbt.c block: add an explicit ->disk backpointer to the request_queue 2021-08-23 12:54:31 -06:00
blk-wbt.h blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled() 2021-06-21 15:03:41 -06:00
blk-zoned.c blk-zoned: allow BLKREPORTZONE without CAP_SYS_ADMIN 2021-08-24 10:12:36 -06:00
blk.h block: move update request helpers into blk-mq.c 2021-10-18 08:50:28 -06:00
bounce.c mm: don't include <linux/blk-cgroup.h> in <linux/backing-dev.h> 2021-10-18 06:17:01 -06:00
bsg-lib.c scsi: bsg-lib: Fix commands without data transfer in bsg_transport_sg_io_fn() 2021-08-01 13:21:40 -04:00
bsg.c scsi: bsg: Fix device unregistration 2021-09-14 00:22:15 -04:00
disk-events.c block: return errors from disk_alloc_events 2021-08-23 12:55:45 -06:00
elevator.c blk-mq: Change shared sbitmap naming to shared tags 2021-10-18 06:17:03 -06:00
elevator.h block: move elevator.h to block/ 2021-10-18 06:17:01 -06:00
fops.c block: add a struct io_comp_batch argument to fops->iopoll() 2021-10-18 14:40:40 -06:00
genhd.c block: update __register_blkdev() probe documentation 2021-11-04 05:48:50 -06:00
holder.c block: drop unused includes in <linux/genhd.h> 2021-10-18 06:17:02 -06:00
ioctl.c block: merge block_ioctl into blkdev_ioctl 2021-10-18 06:17:34 -06:00
ioprio.c block: fix default IO priority handling 2021-08-18 07:23:15 -06:00
keyslot-manager.c block: move integrity handling out of <linux/blkdev.h> 2021-10-18 06:17:02 -06:00
kyber-iosched.c blk-mq: Stop using pointers for blk_mq_tags bitmap tags 2021-10-18 06:17:03 -06:00
mq-deadline.c blk-mq: Stop using pointers for blk_mq_tags bitmap tags 2021-10-18 06:17:03 -06:00
opal_proto.h
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sed-opal.c
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t10-pi.c block: move integrity handling out of <linux/blkdev.h> 2021-10-18 06:17:02 -06:00