Mike Snitzer feb7695fe9 dm io: fix duplicate bio completion due to missing ref count ...

If only a subset of the devices associated with multiple regions support
a given special operation (eg. DISCARD) then the dec_count() that is
used to set error for the region must increment the io->count.

Otherwise, when the dec_count() is called it can cause the dm-io
caller's bio to be completed multiple times.  As was reported against
the dm-mirror target that had mirror legs with a mix of discard
capabilities.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=196077
Reported-by: Zhang Yi <yizhan@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

2017-06-21 12:04:50 -04:00

..

bcache

drivers/md/bcache/super.c: use kvmalloc

2017-05-08 17:15:13 -07:00

persistent-data

dm space map disk: fix some book keeping in the disk space map

2017-05-15 15:09:50 -04:00

bitmap.c

md: uuid debug statement now in processor byte order.

2017-05-24 15:58:43 -07:00

bitmap.h

md: move bitmap_destroy to the beginning of __md_stop

2017-03-16 16:55:58 -07:00

dm-bio-prison-v1.c

dm bio prison v2: new interface for the bio prison

2017-03-07 11:30:16 -05:00

dm-bio-prison-v1.h

dm bio prison v2: new interface for the bio prison

2017-03-07 11:30:16 -05:00

dm-bio-prison-v2.c

dm bio prison v2: new interface for the bio prison

2017-03-07 11:30:16 -05:00

dm-bio-prison-v2.h

dm bio prison v2: new interface for the bio prison

2017-03-07 11:30:16 -05:00

dm-bio-record.h

…

dm-bufio.c

dm: make flush bios explicitly sync

2017-05-31 10:50:23 -04:00

dm-bufio.h

dm bufio: add sector start offset to dm-bufio interface

2017-03-07 13:28:33 -05:00

dm-builtin.c

dm: move request-based code out to dm-rq.[hc]

2016-06-10 15:15:44 -04:00

dm-cache-background-tracker.c

dm cache: handle kmalloc failure allocating background_tracker struct

2017-05-17 09:44:53 -04:00

dm-cache-background-tracker.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-block-types.h

linux: drop __bitwise__ everywhere

2016-12-16 00:13:41 +02:00

dm-cache-metadata.c

dm cache metadata: fail operations if fail_io mode has been established

2017-05-05 14:40:13 -04:00

dm-cache-metadata.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-policy-internal.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-policy-smq.c

dm cache policy smq: don't do any writebacks unless IDLE

2017-05-14 21:54:33 -04:00

dm-cache-policy.c

…

dm-cache-policy.h

dm cache: significant rework to leverage dm-bio-prison-v2

2017-03-07 13:28:31 -05:00

dm-cache-target.c

dm cache: simplify the IDLE vs BUSY state calculation

2017-05-14 21:54:33 -04:00

dm-core.h

libnvdimm for 4.12

2017-05-05 18:49:20 -07:00

dm-crypt.c

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

dm-delay.c

dm: mark targets that pass integrity data

2017-04-24 12:04:32 -04:00

dm-era-target.c

dm block manager: remove an unused argument from dm_block_manager_create()

2017-04-27 17:08:41 -04:00

dm-exception-store.c

- Revert a dm-multipath change that caused a regression for unprivledged

2015-11-04 21:19:53 -08:00

dm-exception-store.h

dm snapshot: fix hung bios when copy error occurs

2016-01-08 20:03:05 -05:00

dm-flakey.c

dm flakey: introduce "error_writes" feature

2016-12-13 15:01:31 -05:00

dm-integrity.c

dm integrity: fix to not disable/enable interrupts from interrupt context

2017-06-21 11:45:02 -04:00

dm-io.c

dm io: fix duplicate bio completion due to missing ref count

2017-06-21 12:04:50 -04:00

dm-ioctl.c

dm ioctl: restore __GFP_HIGH in copy_params()

2017-05-22 19:30:03 -04:00

dm-kcopyd.c

dm kcopyd: switch to use REQ_OP_WRITE_ZEROES

2017-04-08 11:25:38 -06:00

dm-linear.c

libnvdimm for 4.12

2017-05-05 18:49:20 -07:00

dm-log-userspace-base.c

dm: drop NULL test before kmem_cache_destroy() and mempool_destroy()

2015-10-31 19:06:00 -04:00

dm-log-userspace-transfer.c

dm log userspace transfer: match wait_for_completion_timeout return type

2015-04-15 12:10:20 -04:00

dm-log-userspace-transfer.h

…

dm-log-writes.c

Merge branch 'for-4.9/block' of git://git.kernel.dk/linux-block

2016-10-07 14:42:05 -07:00

dm-log.c

block,fs: use REQ_* flags directly

2016-11-01 09:43:26 -06:00

dm-mpath.c

dm mpath: multipath_clone_and_map must not return -EIO

2017-05-15 15:09:53 -04:00

dm-mpath.h

…

dm-path-selector.c

…

dm-path-selector.h

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-queue-length.c

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-raid1.c

Revert "dm mirror: use all available legs on multiple failures"

2017-06-15 08:39:15 -04:00

dm-raid.c

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

dm-region-hash.c

block: rename bio bi_rw to bi_opf

2016-08-07 14:41:02 -06:00

dm-round-robin.c

dm round robin: revert "use percpu 'repeat_count' and 'current_path'"

2017-02-17 00:54:09 -05:00

dm-rq.c

dm rq: add a missing break to map_request

2017-05-15 15:09:51 -04:00

dm-rq.h

dm: always defer request allocation to the owner of the request_queue

2017-01-27 15:08:35 -07:00

dm-service-time.c

dm path selector: remove 'repeat_count' return from .select_path hook

2016-02-22 22:34:42 -05:00

dm-snap-persistent.c

dm: make flush bios explicitly sync

2017-05-31 10:50:23 -04:00

dm-snap-transient.c

dm snapshot: fix hung bios when copy error occurs

2016-01-08 20:03:05 -05:00

dm-snap.c

dm: teach dm-targets to use a dax_device + dax_operations

2017-04-25 13:20:36 -07:00

dm-stats.c

mm: introduce kv[mz]alloc helpers

2017-05-08 17:15:12 -07:00

dm-stats.h

dm stats: support precise timestamps

2015-06-17 12:40:40 -04:00

dm-stripe.c

libnvdimm for 4.12

2017-05-05 18:49:20 -07:00

dm-switch.c

dm switch: simplify conditional in alloc_region_table()

2015-10-31 19:06:06 -04:00

dm-sysfs.c

dm: move request-based code out to dm-rq.[hc]

2016-06-10 15:15:44 -04:00

dm-table.c

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

dm-target.c

libnvdimm for 4.12

2017-05-05 18:49:20 -07:00

dm-thin-metadata.c

dm thin metadata: call precommit before saving the roots

2017-05-15 15:09:49 -04:00

dm-thin-metadata.h

dm thin: fix a race condition between discarding and provisioning a block

2016-07-20 12:43:35 -04:00

dm-thin.c

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

dm-uevent.c

…

dm-uevent.h

…

dm-verity-fec.c

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

dm-verity-fec.h

dm verity fec: limit error correction recursion

2017-03-16 09:37:31 -04:00

dm-verity-target.c

dm verity: fix no salt use case

2017-05-22 13:49:03 -04:00

dm-verity.h

dm verity: switch to using asynchronous hash crypto API

2017-04-24 15:37:04 -04:00

dm-zero.c

block: rename bio bi_rw to bi_opf

2016-08-07 14:41:02 -06:00

dm.c

dm: make flush bios explicitly sync

2017-05-31 10:50:23 -04:00

dm.h

dm: introduce enum dm_queue_mode to cleanup related code

2017-04-27 17:08:44 -04:00

faulty.c

md: fast clone bio in bio_clone_mddev()

2017-02-15 11:24:54 -08:00

Kconfig

- DM cache metadata fixes to short-circuit operations that require the

2017-05-05 19:31:06 -07:00

linear.c

Merge branch 'md-next' into md-linus

2017-05-01 14:09:21 -07:00

linear.h

md linear: fix a race between linear_add() and linear_congested()

2017-02-13 09:17:50 -08:00

Makefile

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

md-cluster.c

md-cluster: fix potential lock issue in add_new_disk

2017-05-21 20:37:09 -07:00

md-cluster.h

md-cluster: add the support for resize

2017-03-16 16:55:50 -07:00

md.c

md: initialise ->writes_pending in personality modules.

2017-06-05 16:04:35 -07:00

md.h

md: initialise ->writes_pending in personality modules.

2017-06-05 16:04:35 -07:00

multipath.c

md: support REQ_OP_WRITE_ZEROES

2017-04-08 11:25:38 -06:00

multipath.h

…

raid0.c

md/md0: optimize raid0 discard handling

2017-05-08 21:18:03 -07:00

raid0.h

block: kill merge_bvec_fn() completely

2015-08-13 12:31:57 -06:00

raid1.c

md: initialise ->writes_pending in personality modules.

2017-06-05 16:04:35 -07:00

raid1.h

md/raid1: Use a new variable to count flighting sync requests

2017-04-27 14:01:16 -07:00

raid5-cache.c

md: Make flush bios explicitely sync

2017-05-31 09:25:53 -07:00

raid5-log.h

md/r5cache: gracefully handle journal device errors for writeback mode

2017-05-11 22:11:11 -07:00

raid5-ppl.c

md: Make flush bios explicitely sync

2017-05-31 09:25:53 -07:00

raid5.c

md: initialise ->writes_pending in personality modules.

2017-06-05 16:04:35 -07:00

raid5.h

- A major update for DM cache that reduces the latency for deciding

2017-05-03 10:31:20 -07:00

raid10.c

md: initialise ->writes_pending in personality modules.

2017-06-05 16:04:35 -07:00

raid10.h

md/raid10: simplify the splitting of requests.

2017-04-11 10:13:02 -07:00