Shaohua Li aaf9f12ebf md/raid5: sort bios ... Previous patch (raid5: only dispatch IO from raid5d for harddisk raid) defers IO dispatching. The goal is to create better IO pattern. At that time, we don't sort the deffered IO and hope the block layer can do IO merge and sort. Now the raid5-cache writeback could create large amount of bios. And if we enable muti-thread for stripe handling, we can't control when to dispatch IO to raid disks. In a lot of time, we are dispatching IO which block layer can't do merge effectively. This patch moves further for the IO dispatching defer. We accumulate bios, but we don't dispatch all the bios after a threshold is met. This 'dispatch partial portion of bios' stragety allows bios coming in a large time window are sent to disks together. At the dispatching time, there is large chance the block layer can merge the bios. To make this more effective, we dispatch IO in ascending order. This increases request merge chance and reduces disk seek. Signed-off-by: Shaohua Li <shli@fb.com>		2017-03-16 16:55:52 -07:00
..
bcache	drivers/md/bcache/util.h: remove duplicate inclusion of blkdev.h	2017-03-09 17:01:10 -08:00
persistent-data	sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h>	2017-03-02 08:42:40 +01:00
bitmap.c	md-cluster: introduce cluster_check_sync_size	2017-03-16 16:55:50 -07:00
bitmap.h	md-cluster: introduce cluster_check_sync_size	2017-03-16 16:55:50 -07:00
dm-bio-prison.c
dm-bio-prison.h
dm-bio-record.h
dm-bufio.c	sched/headers: Prepare to move the memalloc_noio_*() APIs to <linux/sched/mm.h>	2017-03-02 08:42:33 +01:00
dm-bufio.h
dm-builtin.c	dm: move request-based code out to dm-rq.[hc]	2016-06-10 15:15:44 -04:00
dm-cache-block-types.h	linux: drop __bitwise__ everywhere	2016-12-16 00:13:41 +02:00
dm-cache-metadata.c	dm cache metadata: use cursor api in blocks_are_clean_separate_dirty()	2017-02-16 13:12:51 -05:00
dm-cache-metadata.h	dm cache metadata: add "metadata2" feature	2017-02-16 13:12:47 -05:00
dm-cache-policy-cleaner.c	dm cache: speed up writing of the hint array	2016-09-22 11:15:02 -04:00
dm-cache-policy-internal.h	dm cache: speed up writing of the hint array	2016-09-22 11:15:02 -04:00
dm-cache-policy-smq.c	dm cache policy smq: use hash_32() instead of hash_32_generic()	2016-12-08 19:42:37 -05:00
dm-cache-policy.c
dm-cache-policy.h	dm cache: speed up writing of the hint array	2016-09-22 11:15:02 -04:00
dm-cache-target.c	- Fix dm-raid transient device failure processing and other smaller	2017-02-21 12:11:41 -08:00
dm-core.h	dm: always defer request allocation to the owner of the request_queue	2017-01-27 15:08:35 -07:00
dm-crypt.c	KEYS: Differentiate uses of rcu_dereference_key() and user_key_payload()	2017-03-02 10:09:00 +11:00
dm-delay.c
dm-era-target.c	block: Use pointer to backing_dev_info from request_queue	2017-02-02 08:20:48 -07:00
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-io.c	dm io: use bvec iterator helpers to implement .get_page and .next_page	2016-11-21 09:51:57 -05:00
dm-ioctl.c	sched/headers: Prepare to move the memalloc_noio_*() APIs to <linux/sched/mm.h>	2017-03-02 08:42:33 +01:00
dm-kcopyd.c	dm: move request-based code out to dm-rq.[hc]	2016-06-10 15:15:44 -04:00
dm-linear.c	libnvdimm for 4.8	2016-07-28 17:38:16 -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	Merge branch 'for-4.11/next' into for-4.11/linus-merge	2017-02-17 14:08:19 -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	dm raid: bump the target version	2017-02-28 16:47:52 -05:00
dm-raid1.c	Merge branch 'for-4.10/block' of git://git.kernel.dk/linux-block	2016-12-13 10:19:16 -08:00
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: don't dereference request payload after ending request	2017-02-24 13:19:32 -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-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	block: rename bio bi_rw to bi_opf	2016-08-07 14:41:02 -06:00
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	block: Use pointer to backing_dev_info from request_queue	2017-02-02 08:20:48 -07:00
dm-target.c	dm: always defer request allocation to the owner of the request_queue	2017-01-27 15:08:35 -07:00
dm-thin-metadata.c	dm thin: fix a race condition between discarding and provisioning a block	2016-07-20 12:43:35 -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	block: Use pointer to backing_dev_info from request_queue	2017-02-02 08:20:48 -07:00
dm-uevent.c
dm-uevent.h
dm-verity-fec.c	dm verity fec: fix block calculation	2016-07-01 23:29:08 -04:00
dm-verity-fec.h
dm-verity-target.c	dm verity: fix incorrect error message	2016-11-21 09:52:01 -05:00
dm-verity.h
dm-zero.c	block: rename bio bi_rw to bi_opf	2016-08-07 14:41:02 -06:00
dm.c	blk: Ensure users for current->bio_list can see the full list.	2017-03-11 15:31:37 -07:00
dm.h	dm: always defer request allocation to the owner of the request_queue	2017-01-27 15:08:35 -07:00
faulty.c	md: fast clone bio in bio_clone_mddev()	2017-02-15 11:24:54 -08:00
Kconfig	dm block manager: make block locking optional	2016-11-14 15:17:47 -05:00
linear.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md	2017-02-24 14:42:19 -08:00
linear.h	md linear: fix a race between linear_add() and linear_congested()	2017-02-13 09:17:50 -08:00
Makefile	dm: move request-based code out to dm-rq.[hc]	2016-06-10 15:15:44 -04:00
md-cluster.c	md-cluster: add the support for resize	2017-03-16 16:55:50 -07:00
md-cluster.h	md-cluster: add the support for resize	2017-03-16 16:55:50 -07:00
md.c	md-cluster: add the support for resize	2017-03-16 16:55:50 -07:00
md.h	md-cluster: use sync way to handle METADATA_UPDATED msg	2017-03-16 16:55:49 -07:00
multipath.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md	2017-02-24 14:42:19 -08:00
multipath.h
raid0.c	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md	2017-02-24 14:42:19 -08:00
raid0.h
raid1.c	md/raid1: fix a trivial typo in comments	2017-03-14 11:10:44 -07:00
raid1.h	RAID1: avoid unnecessary spin locks in I/O barrier code	2017-02-19 22:04:25 -08:00
raid5-cache.c	md/raid5-cache: bump flush stripe batch size	2017-03-16 16:55:51 -07:00
raid5.c	md/raid5: sort bios	2017-03-16 16:55:52 -07:00
raid5.h	md/raid5: sort bios	2017-03-16 16:55:52 -07:00
raid10.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md	2017-03-16 11:43:48 -07:00
raid10.h	md/raid10: add failfast handling for reads.	2016-11-22 09:14:28 -08:00