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4da81fa2108aa46249768bfb04cea7c534fafdda
linux/drivers/md
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Hannes Reinecke 809b1e4945 dm: avoid filesystem lookup in dm_get_dev_t() 
This reverts commit
644bda6f34 ("dm table: fall back to getting device using name_to_dev_t()")

dm_get_dev_t() is just used to convert an arbitrary 'path' string
into a dev_t. It doesn't presume that the device is present; that
check will be done later, as the only caller is dm_get_device(),
which does a dm_get_table_device() later on, which will properly
open the device.

So if the path string already _is_ in major:minor representation
we can convert it directly, avoiding a recursion into the filesystem
to lookup the block device.

This avoids a hang in multipath_message() when the filesystem is
inaccessible.

Fixes: 644bda6f34 ("dm table: fall back to getting device using name_to_dev_t()")
Cc: stable@vger.kernel.org
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-01-21 15:06:45 -05:00
..
bcache
bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET
2021-01-09 09:21:03 -07:00
persistent-data
dm thin metadata: Remove unused local variable when create thin and snap
2020-09-29 16:33:11 -04:00
dm-bio-prison-v1.c
dm bio prison: replace spin_lock_irqsave with spin_lock_irq
2019-11-05 14:53:03 -05:00
dm-bio-prison-v1.h
block: switch bios to blk_status_t
2017-06-09 09:27:32 -06:00
dm-bio-prison-v2.c
dm bio prison v2: use true/false for bool variable
2020-01-07 12:07:08 -05:00
dm-bio-prison-v2.h
…
dm-bio-record.h
dm bio record: save/restore bi_end_io and bi_integrity
2020-03-03 10:02:46 -05:00
dm-bufio.c
dm integrity: fix flush with external metadata device
2021-01-08 15:57:29 -05:00
dm-builtin.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dm-cache-background-tracker.c
dm cache background tracker: fix sparse warning
2018-04-30 15:40:40 -04:00
dm-cache-background-tracker.h
…
dm-cache-block-types.h
…
dm-cache-metadata.c
dm cache metadata: Avoid returning cmd->bm wild pointer on error
2020-09-02 13:38:24 -04:00
dm-cache-metadata.h
…
dm-cache-policy-internal.h
…
dm-cache-policy-smq.c
dm: remove unnecessary unlikely() around WARN_ON_ONCE()
2018-10-16 14:34:59 -04:00
dm-cache-policy.c
…
dm-cache-policy.h
…
dm-cache-target.c
dm cache: simplify the return expression of load_mapping()
2020-12-22 09:54:48 -05:00
dm-clone-metadata.c
dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()
2020-03-27 14:42:51 -04:00
dm-clone-metadata.h
dm clone metadata: Fix return type of dm_clone_nr_of_hydrated_regions()
2020-03-27 14:42:51 -04:00
dm-clone-target.c
writeback: remove bdi->congested_fn
2020-07-08 17:20:46 -06:00
dm-core.h
dm: remove the block_device reference in struct mapped_device
2020-12-01 14:53:39 -07:00
dm-crypt.c
dm crypt: fix copy and paste bug in crypt_alloc_req_aead
2021-01-21 15:06:44 -05:00
dm-delay.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -06:00
dm-dust.c
dm dust: add interface to list all badblocks
2020-07-20 11:17:41 -04:00
dm-ebs-target.c
dm ebs: avoid double unlikely() notation when using IS_ERR()
2020-12-21 13:59:37 -05:00
dm-era-target.c
writeback: remove bdi->congested_fn
2020-07-08 17:20:46 -06:00
dm-exception-store.c
…
dm-exception-store.h
Merge tag 'for-5.2/dm-changes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
2019-05-16 15:55:48 -07:00
dm-flakey.c
block: rework zone reporting
2019-11-12 19:12:07 -07:00
dm-init.c
dm init: Set file local variable static
2020-08-04 15:51:28 -04:00
dm-integrity.c
dm integrity: conditionally disable "recalculate" feature
2021-01-21 15:05:21 -05:00
dm-io.c
treewide: Remove uninitialized_var() usage
2020-07-16 12:35:15 -07:00
dm-ioctl.c
dm ioctl: fix error return code in target_message
2020-12-04 18:04:36 -05:00
dm-kcopyd.c
dm kcopyd: always complete failed jobs
2019-08-15 15:57:39 -04:00
dm-linear.c
dm: add support for REQ_NOWAIT and enable it for linear target
2020-09-25 08:20:03 -06:00
dm-log-userspace-base.c
dm: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
dm-log-userspace-transfer.c
…
dm-log-userspace-transfer.h
…
dm-log-writes.c
dm: replace zero-length array with flexible-array
2020-05-20 17:09:44 -04:00
dm-log.c
…
dm-mpath.c
dm: use dm_table_get_device_name() where appropriate in targets
2020-09-29 16:33:08 -04:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
dm mpath: pass IO start time to path selector
2020-05-15 10:29:36 -04:00
dm-ps-historical-service-time.c
dm: rename multipath path selector source files to have "dm-ps" prefix
2020-12-04 18:04:35 -05:00
dm-ps-io-affinity.c
dm: rename multipath path selector source files to have "dm-ps" prefix
2020-12-04 18:04:35 -05:00
dm-ps-queue-length.c
dm: rename multipath path selector source files to have "dm-ps" prefix
2020-12-04 18:04:35 -05:00
dm-ps-round-robin.c
dm: rename multipath path selector source files to have "dm-ps" prefix
2020-12-04 18:04:35 -05:00
dm-ps-service-time.c
dm: rename multipath path selector source files to have "dm-ps" prefix
2020-12-04 18:04:35 -05:00
dm-raid1.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -06:00
dm-raid.c
dm raid: fix discard limits for raid1
2021-01-04 15:02:30 -05:00
dm-region-hash.c
Merge tag 'overflow-v4.18-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2018-06-12 18:28:00 -07:00
dm-rq.c
block: remove the request_queue to argument request based tracepoints
2020-12-04 09:42:00 -07:00
dm-rq.h
dm: remove unused _rq_tio_cache and _rq_cache
2019-03-05 14:48:50 -05:00
dm-snap-persistent.c
dm snap persistent: simplify area_io()
2020-09-29 16:33:12 -04:00
dm-snap-transient.c
…
dm-snap.c
dm snapshot: flush merged data before committing metadata
2021-01-06 18:28:34 -05:00
dm-stats.c
dm: replace zero-length array with flexible-array
2020-05-20 17:09:44 -04:00
dm-stats.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dm-stripe.c
dm: add support for REQ_NOWAIT to various targets
2020-12-04 18:04:35 -05:00
dm-switch.c
dm: add support for REQ_NOWAIT to various targets
2020-12-04 18:04:35 -05:00
dm-sysfs.c
dm: remove legacy request-based IO path
2018-10-11 11:36:09 -04:00
dm-table.c
dm: avoid filesystem lookup in dm_get_dev_t()
2021-01-21 15:06:45 -05:00
dm-target.c
dm mpath: fix missing call of path selector type->end_io
2019-04-25 15:38:52 -04:00
dm-thin-metadata.c
dm thin metadata: Remove unused local variable when create thin and snap
2020-09-29 16:33:11 -04:00
dm-thin-metadata.h
dm thin metadata: Add support for a pre-commit callback
2019-12-05 17:05:24 -05:00
dm-thin.c
writeback: remove bdi->congested_fn
2020-07-08 17:20:46 -06:00
dm-uevent.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
dm-uevent.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
dm-unstripe.c
dm: add support for REQ_NOWAIT to various targets
2020-12-04 18:04:35 -05:00
dm-verity-fec.c
dm verity fec: fix hash block number in verity_fec_decode
2020-04-16 16:16:38 -04:00
dm-verity-fec.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
dm-verity-target.c
dm verity: skip verity work if I/O error when system is shutting down
2020-12-21 13:57:25 -05:00
dm-verity-verify-sig.c
dm verity: Add support for signature verification with 2nd keyring
2020-12-04 18:04:35 -05:00
dm-verity-verify-sig.h
dm verity: Fix compilation warning
2020-08-04 15:48:13 -04:00
dm-verity.h
dm verity: add "panic_on_corruption" error handling mode
2020-07-13 11:47:33 -04:00
dm-writecache.c
dm writecache: remove BUG() and fail gracefully instead
2020-12-01 15:43:39 -05:00
dm-zero.c
dm: add support for REQ_NOWAIT to various targets
2020-12-04 18:04:35 -05:00
dm-zoned-metadata.c
dm zoned: Fix zone reclaim trigger
2020-07-08 12:21:53 -04:00
dm-zoned-reclaim.c
dm zoned: Fix zone reclaim trigger
2020-07-08 12:21:53 -04:00
dm-zoned-target.c
Merge tag 'for-5.9/block-20200802' of git://git.kernel.dk/linux-block
2020-08-03 11:57:03 -07:00
dm-zoned.h
dm zoned: select reclaim zone based on device index
2020-06-05 14:59:53 -04:00
dm.c
dm: eliminate potential source of excessive kernel log noise
2021-01-08 15:56:35 -05:00
dm.h
dm table: make 'struct dm_table' definition accessible to all of DM core
2020-09-29 16:33:07 -04:00
Kconfig
dm zoned: select CONFIG_CRC32
2021-01-04 15:02:32 -05:00
Makefile
dm: rename multipath path selector source files to have "dm-ps" prefix
2020-12-04 18:04:35 -05:00
md-autodetect.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
md-bitmap.c
md/bitmap: fix memory leak of temporary bitmap
2020-10-08 22:37:39 -07:00
md-bitmap.h
md: Avoid namespace collision with bitmap API
2018-08-01 15:49:39 -07:00
md-cluster.c
Merge tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block
2020-12-16 13:09:32 -08:00
md-cluster.h
md-cluster: introduce resync_info_get interface for sanity check
2018-10-18 09:36:35 -07:00
md-faulty.c
block: rename generic_make_request to submit_bio_noacct
2020-07-01 07:27:24 -06:00
md-linear.c
block: remove the request_queue argument to the block_bio_remap tracepoint
2020-12-04 09:42:00 -07:00
md-linear.h
md/raid1: Replace zero-length array with flexible-array
2020-05-13 12:02:23 -07:00
md-multipath.c
writeback: remove bdi->congested_fn
2020-07-08 17:20:46 -06:00
md-multipath.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
md.c
Merge tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block
2020-12-16 13:09:32 -08:00
md.h
Merge tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block
2020-12-16 13:09:32 -08:00
raid0.c
Merge tag 'for-5.11/block-2020-12-14' of git://git.kernel.dk/linux-block
2020-12-16 12:57:51 -08:00
raid0.h
md/raid0: avoid RAID0 data corruption due to layout confusion.
2019-09-13 13:10:05 -07:00
raid1-10.c
md: raid1-10: Unify r{1,10}bio_pool_free
2019-06-15 01:37:35 -06:00
raid1.c
block: remove the request_queue argument to the block_bio_remap tracepoint
2020-12-04 09:42:00 -07:00
raid1.h
md/raid1: Replace zero-length array with flexible-array
2020-05-13 12:02:23 -07:00
raid5-cache.c
raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_show
2020-08-02 23:03:52 -07:00
raid5-log.h
raid5: set write hint for PPL
2019-03-12 10:15:18 -07:00
raid5-ppl.c
md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*
2020-07-21 17:18:12 -07:00
raid5.c
block: remove the request_queue argument to the block_bio_remap tracepoint
2020-12-04 09:42:00 -07:00
raid5.h
md/raid5: let multiple devices of stripe_head share page
2020-09-24 16:44:44 -07:00
raid10.c
Merge tag 'for-5.11/drivers-2020-12-14' of git://git.kernel.dk/linux-block
2020-12-16 13:09:32 -08:00
raid10.h
Revert "md/raid10: improve discard request for far layout"
2020-12-09 20:46:00 -08:00