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linux-stable/drivers/md
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Artur Paszkiewicz 2214c260c7 md: don't return -EAGAIN in md_allow_write for external metadata arrays 
This essentially reverts commit b5470dc5fc ("md: resolve external
metadata handling deadlock in md_allow_write") with some adjustments.

Since commit 6791875e2e ("md: make reconfig_mutex optional for writes
to md sysfs files.") changing array_state to 'active' does not use
mddev_lock() and will not cause a deadlock with md_allow_write(). This
revert simplifies userspace tools that write to sysfs attributes like
"stripe_cache_size" or "consistency_policy" because it removes the need
for special handling for external metadata arrays, checking for EAGAIN
and retrying the write.

Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
 		2017-05-08 10:32:59 -07:00
..
bcache drivers/md/bcache/util.h: remove duplicate inclusion of blkdev.h 2017-03-09 17:01:10 -08:00
persistent-data dm block manager: remove an unused argument from dm_block_manager_create() 2017-04-27 17:08:41 -04:00
Kconfig - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
Makefile - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
bitmap.c md: fix several trivial typos in comments 2017-03-23 22:54:57 -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 bufio: check new buffer allocation watermark every 30 seconds 2017-05-01 15:21:42 -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: significant rework to leverage dm-bio-prison-v2 2017-03-07 13:28:31 -05:00
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 - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
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: make the cleaner policy write-back more aggressively 2017-03-31 11:41:05 -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 - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
dm-core.h - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -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 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: use previously calculated log2 of sectors_per_block 2017-04-27 12:16:32 -04:00
dm-io.c dm: support REQ_OP_WRITE_ZEROES 2017-04-08 11:25:38 -06:00
dm-ioctl.c dm: introduce enum dm_queue_mode to cleanup related code 2017-04-27 17:08:44 -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 - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
dm-log-userspace-base.c
…
dm-log-userspace-transfer.c
…
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 - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
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-raid.c - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
dm-raid1.c block: remove the discard_zeroes_data flag 2017-04-08 11:25:38 -06:00
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 - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
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 block,fs: use REQ_* flags directly 2016-11-01 09:43:26 -06:00
dm-snap-transient.c dm snapshot: fix hung bios when copy error occurs 2016-01-08 20:03:05 -05:00
dm-snap.c block: rename bio bi_rw to bi_opf 2016-08-07 14:41:02 -06:00
dm-stats.c dm stats: fix a leaked s->histogram_boundaries array 2017-02-16 14:17:07 -05:00
dm-stats.h
…
dm-stripe.c - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
dm-switch.c
…
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 dm: introduce a new DM_MAPIO_KILL return value 2017-05-01 18:19:03 -04:00
dm-thin-metadata.c dm block manager: remove an unused argument from dm_block_manager_create() 2017-04-27 17:08:41 -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: switch to using asynchronous hash crypto API 2017-04-24 15:37:04 -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 - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
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
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
md-cluster.c md-cluster: Fix a memleak in an error handling path 2017-04-14 08:08:29 -07:00
md-cluster.h md-cluster: add the support for resize 2017-03-16 16:55:50 -07:00
md.c md: don't return -EAGAIN in md_allow_write for external metadata arrays 2017-05-08 10:32:59 -07:00
md.h md: don't return -EAGAIN in md_allow_write for external metadata arrays 2017-05-08 10:32:59 -07:00
multipath.c md: support REQ_OP_WRITE_ZEROES 2017-04-08 11:25:38 -06:00
multipath.h
…
raid0.c Merge branch 'md-next' into md-linus 2017-05-01 14:09:21 -07:00
raid0.h
…
raid1.c md: don't return -EAGAIN in md_allow_write for external metadata arrays 2017-05-08 10:32:59 -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 - A major update for DM cache that reduces the latency for deciding 2017-05-03 10:31:20 -07:00
raid5-log.h raid5-ppl: use resize_stripes() when enabling or disabling ppl 2017-04-10 12:00:49 -07:00
raid5-ppl.c raid5-ppl: use a single mempool for ppl_io_unit and header_page 2017-04-11 14:56:46 -07:00
raid5.c md: don't return -EAGAIN in md_allow_write for external metadata arrays 2017-05-08 10:32:59 -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 Merge branch 'md-next' into md-linus 2017-05-01 14:09:21 -07:00
raid10.h md/raid10: simplify the splitting of requests. 2017-04-11 10:13:02 -07:00