Akilesh Kailash 9d80dbe0a3 ANDROID: dm-user: Fail the IO if there is no daemon ... IO processing is done by the daemon when bio requests are queued in dm-user. If there is no daemon, then IO's will be hung indefinitely; This can lead to sysrq kernel panic when llkd daemon detects IO's hung in uninterruptible state. Terminate the bio reqests as an IO error if there is no daemon to process. We already track if there are any user-space threads processing IO's per dm-user targer. If there is no daemon, queue the IO requests to a delayed work queue. If the daemon does not show up within that time frame, worker thread will fail the IO with an IO error. Bug: 188362117 Test: 1: Kill the daemon when IO to dm-user is in-flight Verify IO failure and no IO hang. 2: Verify daemon picks up IO's queued for cancelling. 3: Full and incremental OTA. 4: Terminate snapuserd daemon during post-install phase of OTA 5: Add user-space unit test to test (1) Signed-off-by: Akilesh Kailash <akailash@google.com> Change-Id: I9351e8f664edc67d75c4ea10a065928ef85e5490		2021-05-25 23:58:09 +00:00
..
bcache	bcache: Move journal work to new flush wq	2021-03-04 11:38:26 +01:00
persistent-data	dm space map common: fix division bug in sm_ll_find_free_block()	2021-05-11 14:47:40 +02:00
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
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-bow.c	ANDROID: dm: sync inline crypto support with patches going upstream	2021-02-19 10:48:51 +00:00
dm-bufio.c	Revert "Revert "dm bufio: subtract the number of initial sectors..."	2021-04-14 21:50:42 +00:00
dm-builtin.c
dm-cache-background-tracker.c
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-cache-policy.c
dm-cache-policy.h
dm-cache-target.c	Revert "dm cache: fix arm link errors with inline"	2020-12-01 15:43:36 -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	Merge 5.10.20 into android12-5.10	2021-03-07 12:33:33 +01:00
dm-crypt.c	dm: fix deadlock when swapping to encrypted device	2021-03-04 11:38:44 +01:00
dm-default-key.c	ANDROID: dm: sync inline crypto support with patches going upstream	2021-02-19 10:48:51 +00:00
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: Fix incorrect checking for REQ_OP_FLUSH	2020-08-04 16:01:40 -04:00
dm-era-target.c	dm era: only resize metadata in preresume	2021-03-04 11:38:46 +01:00
dm-exception-store.c
dm-exception-store.h
dm-flakey.c	ANDROID: dm: sync inline crypto support with patches going upstream	2021-02-19 10:48:51 +00:00
dm-historical-service-time.c	dm mpath: add Historical Service Time Path Selector	2020-05-15 10:29:36 -04:00
dm-init.c	dm init: Set file local variable static	2020-08-04 15:51:28 -04:00
dm-integrity.c	dm integrity: fix missing goto in bitmap_flush_interval error handling	2021-05-11 14:47:40 +02:00
dm-io.c	treewide: Remove uninitialized_var() usage	2020-07-16 12:35:15 -07:00
dm-ioctl.c	dm ioctl: fix out of bounds array access when no devices	2021-03-30 14:31:56 +02:00
dm-kcopyd.c	dm kcopyd: always complete failed jobs	2019-08-15 15:57:39 -04:00
dm-linear.c	ANDROID: dm: sync inline crypto support with patches going upstream	2021-02-19 10:48:51 +00:00
dm-log-userspace-base.c
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-queue-length.c	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
dm-raid.c	dm raid: fix inconclusive reshape layout on fast raid4/5/6 table reload sequences	2021-05-11 14:47:36 +02:00
dm-raid1.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
dm-region-hash.c
dm-round-robin.c
dm-rq.c	dm rq: fix double free of blk_mq_tag_set in dev remove after table load fails	2021-05-11 14:47:40 +02:00
dm-rq.h
dm-service-time.c	dm mpath: pass IO start time to path selector	2020-05-15 10:29:36 -04:00
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	2021-01-19 18:27:21 +01:00
dm-stats.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-stats.h
dm-stripe.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-switch.c	dm: replace zero-length array with flexible-array	2020-05-20 17:09:44 -04:00
dm-sysfs.c
dm-table.c	Merge 5.10.27 into android12-5.10	2021-04-02 15:25:50 +02:00
dm-target.c
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
dm-uevent.h
dm-unstripe.c
dm-user.c	ANDROID: dm-user: Fail the IO if there is no daemon	2021-05-25 23:58:09 +00:00
dm-verity-fec.c	dm verity fec: fix misaligned RS roots IO	2021-04-21 13:00:54 +02:00
dm-verity-fec.h	dm verity fec: fix misaligned RS roots IO	2021-04-21 13:00:54 +02:00
dm-verity-target.c	Revert "ANDROID: AVB error handler to invalidate vbmeta partition."	2021-04-13 18:00:02 +00:00
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: Fix compilation warning	2020-08-04 15:48:13 -04:00
dm-verity.h	Revert "ANDROID: AVB error handler to invalidate vbmeta partition."	2021-04-13 18:00:02 +00:00
dm-writecache.c	dm writecache: fix writing beyond end of underlying device when shrinking	2021-03-04 11:38:45 +01:00
dm-zero.c
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	dm table: Fix zoned model check and zone sectors check	2021-03-30 14:32:06 +02:00
dm-zoned.h	dm zoned: select reclaim zone based on device index	2020-06-05 14:59:53 -04:00
dm.c	Merge 5.10.20 into android12-5.10	2021-03-07 12:33:33 +01:00
dm.h	dm table: fix DAX iterate_devices based device capability checks	2021-03-04 11:38:44 +01:00
Kconfig	Revert "ANDROID: AVB error handler to invalidate vbmeta partition."	2021-04-13 18:00:02 +00:00
Makefile	Revert "ANDROID: AVB error handler to invalidate vbmeta partition."	2021-04-13 18:00:02 +00:00
md-autodetect.c	treewide: Use fallthrough pseudo-keyword	2020-08-23 17:36:59 -05:00
md-bitmap.c	md/bitmap: wait for external bitmap writes to complete during tear down	2021-05-14 09:49:59 +02:00
md-bitmap.h
md-cluster.c	md/cluster: fix deadlock when node is doing resync job	2020-12-30 11:54:25 +01:00
md-cluster.h
md-faulty.c	block: rename generic_make_request to submit_bio_noacct	2020-07-01 07:27:24 -06:00
md-linear.c	block: add a new revalidate_disk_size helper	2020-09-02 08:00:07 -06:00
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.c	md: Fix missing unused status line of /proc/mdstat	2021-05-14 09:49:59 +02:00
md.h	Revert "md: change mddev 'chunk_sectors' from int to unsigned"	2020-12-14 19:33:01 +01:00
raid1-10.c
raid1.c	md/raid1: properly indicate failure when ending a failed write request	2021-05-11 14:47:36 +02:00
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-ppl.c	md/raid456: convert macro STRIPE_* to RAID5_STRIPE_*	2020-07-21 17:18:12 -07:00
raid5.c	md/raid5: fix oops during stripe resizing	2020-10-08 22:38:10 -07:00
raid5.h	md/raid5: let multiple devices of stripe_head share page	2020-09-24 16:44:44 -07:00
raid10.c	md/raid10: initialize r10_bio->read_slot before use.	2021-01-06 14:56:49 +01:00
raid10.h	Revert "md/raid10: improve discard request for far layout"	2020-12-09 20:46:00 -08:00
raid0.c	Revert "md: add md_submit_discard_bio() for submitting discard bio"	2020-12-09 20:46:01 -08:00
raid0.h	md/raid0: avoid RAID0 data corruption due to layout confusion.	2019-09-13 13:10:05 -07:00