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34cf78bf34d48dddddfeeadb44f9841d7864997a
linux/drivers/md
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Guoju Fang 34cf78bf34 bcache: fix a lost wake-up problem caused by mca_cannibalize_lock 
This patch fix a lost wake-up problem caused by the race between
mca_cannibalize_lock and bch_cannibalize_unlock.

Consider two processes, A and B. Process A is executing
mca_cannibalize_lock, while process B takes c->btree_cache_alloc_lock
and is executing bch_cannibalize_unlock. The problem happens that after
process A executes cmpxchg and will execute prepare_to_wait. In this
timeslice process B executes wake_up, but after that process A executes
prepare_to_wait and set the state to TASK_INTERRUPTIBLE. Then process A
goes to sleep but no one will wake up it. This problem may cause bcache
device to dead.

Signed-off-by: Guoju Fang <fangguoju@gmail.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-13 15:42:50 -07:00
..
bcache
bcache: fix a lost wake-up problem caused by mca_cannibalize_lock
2019-11-13 15:42:50 -07:00
persistent-data
dm space map common: remove check for impossible sm_find_free() return value
2019-08-26 15:39:53 -04:00
dm-bio-prison-v1.c
dm: adjust structure members to improve alignment
2018-06-08 11:53:14 -04:00
dm-bio-prison-v1.h
…
dm-bio-prison-v2.c
dm: adjust structure members to improve alignment
2018-06-08 11:53:14 -04:00
dm-bio-prison-v2.h
…
dm-bio-record.h
…
dm-bufio.c
dm bufio: introduce a global cache replacement
2019-09-13 17:00:21 -04:00
dm-builtin.c
…
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: Fix loading discard bitset
2019-04-18 16:18:25 -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: add support for discard passdown to the origin device
2019-03-05 14:53:52 -05:00
dm-clone-metadata.c
dm: add clone target
2019-09-12 09:32:31 -04:00
dm-clone-metadata.h
dm: add clone target
2019-09-12 09:32:31 -04:00
dm-clone-target.c
dm: add clone target
2019-09-12 09:32:31 -04:00
dm-core.h
dm: disable DISCARD if the underlying storage no longer supports it
2019-04-04 15:33:59 -04:00
dm-crypt.c
dm crypt: omit parsing of the encapsulated cipher
2019-09-03 16:46:16 -04:00
dm-delay.c
dm delay: fix a crash when invalid device is specified
2019-04-26 11:29:32 -04:00
dm-dust.c
dm dust: use dust block size for badblocklist index
2019-08-21 11:27:17 -04:00
dm-era-target.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
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
dm: add zone open, close and finish support
2019-11-07 06:36:08 -07:00
dm-init.c
docs: device-mapper: move it to the admin-guide
2019-07-15 11:03:01 -03:00
dm-integrity.c
block: centralize PI remapping logic to the block layer
2019-09-17 20:03:49 -06:00
dm-io.c
dm: Use kzalloc for all structs with embedded biosets/mempools
2018-06-05 08:47:43 -06:00
dm-ioctl.c
dm: introduce DM_GET_TARGET_VERSION
2019-09-16 10:18:01 -04:00
dm-kcopyd.c
dm kcopyd: always complete failed jobs
2019-08-15 15:57:39 -04:00
dm-linear.c
dm: add zone open, close and finish support
2019-11-07 06:36:08 -07:00
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 log writes: fix incorrect comment about the logged sequence example
2019-07-09 14:13:33 -04:00
dm-log.c
…
dm-mpath.c
dm mpath: always free attached_handler_name in parse_path()
2019-04-30 16:51:30 -04:00
dm-mpath.h
…
dm-path-selector.c
…
dm-path-selector.h
…
dm-queue-length.c
…
dm-raid1.c
dm raid1: use struct_size() with kzalloc()
2019-08-26 11:05:32 -04:00
dm-raid.c
dm raid: fix updating of max_discard_sectors limit
2019-09-11 16:18:23 -04:00
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-round-robin.c
…
dm-rq.c
block: Delay default elevator initialization
2019-09-05 19:52:34 -06:00
dm-rq.h
dm: remove unused _rq_tio_cache and _rq_cache
2019-03-05 14:48:50 -05:00
dm-service-time.c
…
dm-snap-persistent.c
…
dm-snap-transient.c
…
dm-snap.c
dm snapshot: fix oversights in optional discard support
2019-07-17 11:12:30 -04:00
dm-stats.c
dm stats: use struct_size() helper
2019-09-04 09:39:22 -04:00
dm-stats.h
…
dm-stripe.c
dax: Introduce a ->copy_to_iter dax operation
2018-05-22 23:18:31 -07:00
dm-switch.c
dm switch: use struct_size() in kzalloc()
2019-03-05 14:48:51 -05:00
dm-sysfs.c
dm: remove legacy request-based IO path
2018-10-11 11:36:09 -04:00
dm-table.c
dm: make dm_table_find_target return NULL
2019-08-23 10:13:12 -04:00
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: check if in fail_io mode when setting needs_check
2019-07-02 15:50:08 -04:00
dm-thin-metadata.h
dm thin: fix passdown_double_checking_shared_status()
2019-01-15 16:10:41 -05:00
dm-thin.c
dm thin: add sanity checks to thin-pool and external snapshot creation
2019-03-05 14:53:49 -05:00
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: Check for device sector overflow if CONFIG_LBDAF is not set
2018-12-18 09:02:26 -05:00
dm-verity-fec.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
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: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-verity-verify-sig.c
dm verity: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-verity-verify-sig.h
dm verity: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-verity.h
dm verity: add root hash pkcs#7 signature verification
2019-08-23 10:13:14 -04:00
dm-writecache.c
dm writecache: skip writecache_wait for pmem mode
2019-09-05 13:22:05 -04:00
dm-zero.c
…
dm-zoned-metadata.c
block: add zone open, close and finish operations
2019-11-07 06:31:48 -07:00
dm-zoned-reclaim.c
dm zoned: fix a few typos
2019-08-15 15:57:43 -04:00
dm-zoned-target.c
dm zoned: fix invalid memory access
2019-08-26 10:33:58 -04:00
dm-zoned.h
dm zoned: add SPDX license identifiers
2019-08-15 15:57:42 -04:00
dm.c
dm: add zone open, close and finish support
2019-11-07 06:36:08 -07:00
dm.h
dm: make dm_table_find_target return NULL
2019-08-23 10:13:12 -04:00
Kconfig
dm: add clone target
2019-09-12 09:32:31 -04:00
Makefile
dm: add clone target
2019-09-12 09:32:31 -04:00
md-bitmap.c
md/bitmap: avoid race window between md_bitmap_resize and bitmap_file_clear_bit
2019-10-24 15:22:40 -07:00
md-bitmap.h
md: Avoid namespace collision with bitmap API
2018-08-01 15:49:39 -07:00
md-cluster.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45
2019-05-24 17:27:12 +02:00
md-cluster.h
md-cluster: introduce resync_info_get interface for sanity check
2018-10-18 09:36:35 -07:00
md-faulty.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47
2019-05-24 17:27:13 +02:00
md-linear.c
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
md-linear.h
…
md-multipath.c
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
md-multipath.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
md.c
md: avoid invalid memory access for array sb->dev_roles
2019-11-11 16:32:22 -08:00
md.h
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
raid0.c
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
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
md/raid1: avoid soft lockup under high load
2019-11-11 16:32:22 -08:00
raid1.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00
raid5-cache.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288
2019-06-05 17:36:37 +02:00
raid5-log.h
raid5: set write hint for PPL
2019-03-12 10:15:18 -07:00
raid5-ppl.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288
2019-06-05 17:36:37 +02:00
raid5.c
md: improve handling of bio with REQ_PREFLUSH in md_flush_request()
2019-10-24 15:22:40 -07:00
raid5.h
raid5: use bio_end_sector in r5_next_bio
2019-09-13 13:14:43 -07:00
raid10.c
md/raid10: prevent access of uninitialized resync_pages offset
2019-11-11 16:47:39 -08:00
raid10.h
md: convert to bioset_init()/mempool_init()
2018-05-30 15:33:32 -06:00