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linux/drivers/md
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NeilBrown a415c0f106 md: initialise ->writes_pending in personality modules. 
The new per-cpu counter for writes_pending is initialised in
md_alloc(), which is not called by dm-raid.
So dm-raid fails when md_write_start() is called.

Move the initialization to the personality modules
that need it.  This way it is always initialised when needed,
but isn't unnecessarily initialized (requiring memory allocation)
when the personality doesn't use writes_pending.

Reported-by: Heinz Mauelshagen <heinzm@redhat.com>
Fixes: 4ad23a9764 ("MD: use per-cpu counter for writes_pending")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
2017-06-05 16:04:35 -07:00
..
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-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
dm-exception-store.h
dm-flakey.c dm flakey: introduce "error_writes" feature 2016-12-13 15:01:31 -05:00
dm-integrity.c dm: make flush bios explicitly sync 2017-05-31 10:50:23 -04:00
dm-io.c dm: support REQ_OP_WRITE_ZEROES 2017-04-08 11:25:38 -06:00
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-log-userspace-transfer.c
dm-log-userspace-transfer.h
dm-log-writes.c
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-queue-length.c
dm-raid1.c dm: make flush bios explicitly sync 2017-05-31 10:50:23 -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
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-snap-persistent.c dm: make flush bios explicitly sync 2017-05-31 10:50:23 -04:00
dm-snap-transient.c
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-stripe.c libnvdimm for 4.12 2017-05-05 18:49:20 -07:00
dm-switch.c
dm-sysfs.c
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.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
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
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