Joe Thornber 701e03e4e1 dm cache: track all IO to the cache rather than just the origin device's IO ...

IO tracking used to throttle writebacks when the origin device is busy.

Even if all the IO is going to the fast device, writebacks can
significantly degrade performance.  So track all IO to gauge whether the
cache is busy or not.

Otherwise, synthetic IO tests (e.g. fio) that might send all IO to the
fast device wouldn't cause writebacks to get throttled.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

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

..

bcache

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

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

persistent-data

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

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

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

mm, vmalloc: use __GFP_HIGHMEM implicitly

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

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

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: stop preemptively demoting blocks

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: track all IO to the cache rather than just the origin device's IO

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: 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

drivers/md/dm-ioctl.c: use kvmalloc rather than opencoded variant

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

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

- 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-raid1.c

block: remove the discard_zeroes_data flag

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

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

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

2017-05-06 11:25:08 -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

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 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

libnvdimm for 4.12

2017-05-05 18:49:20 -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

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 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: handle read-only member devices better.

2017-04-20 13:25:51 -07:00

md.h

Merge branch 'md-next' into md-linus

2017-05-01 14:09:21 -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

block: kill merge_bvec_fn() completely

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

raid1.c

Merge branch 'md-next' into md-linus

2017-05-01 14:09:21 -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

Merge branch 'md-next' into md-linus

2017-05-01 14:09:21 -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