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linux-stable/drivers/md
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Mikulas Patocka dbba42d8a9 dm: eliminate unused "bioset" process for each bio-based DM device 
Commit 54efd50bfd ("block: make
generic_make_request handle arbitrarily sized bios") makes it possible
for block devices to process large bios.  In doing so that commit
allocates a new queue->bio_split bioset for each block device, this
bioset is used for allocating bios when the driver needs to split large
bios.

Each bioset allocates a workqueue process, thus the above commit
increases the number of processes allocated per block device.

DM doesn't need the queue->bio_split bioset, thus we can deallocate it.
This reduces the number of allocated processes per bio-based DM device
from 3 to 2.  Also remove the call to blk_queue_split(), it is not
needed because DM does its own splitting.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-10-31 19:06:02 -04:00
..
bcache bcache: remove driver private bio splitting code 2015-08-13 12:31:40 -06:00
persistent-data dm: remove unlikely() before IS_ERR() 2015-08-12 11:32:21 -04:00
bitmap.c md/bitmap: don't pass -1 to bitmap_storage_alloc. 2015-10-02 17:24:13 +10:00
bitmap.h md-cluster: re-add capabilities 2015-04-22 07:59:39 +10:00
dm-bio-prison.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
dm-bio-prison.h dm bio prison: add dm_cell_promote_or_release() 2015-05-29 14:19:06 -04:00
dm-bio-record.h
dm-bufio.c dm: convert ffs to __ffs 2015-10-31 19:06:01 -04:00
dm-bufio.h
dm-builtin.c
dm-cache-block-types.h
dm-cache-metadata.c dm cache: add fail io mode and needs_check flag 2015-06-11 17:13:00 -04:00
dm-cache-metadata.h dm cache: add fail io mode and needs_check flag 2015-06-11 17:13:00 -04:00
dm-cache-policy-cleaner.c dm: convert ffs to __ffs 2015-10-31 19:06:01 -04:00
dm-cache-policy-internal.h dm cache: age and write back cache entries even without active IO 2015-06-11 17:13:01 -04:00
dm-cache-policy-mq.c dm: convert ffs to __ffs 2015-10-31 19:06:01 -04:00
dm-cache-policy-smq.c dm: convert ffs to __ffs 2015-10-31 19:06:01 -04:00
dm-cache-policy.c
dm-cache-policy.h dm cache: age and write back cache entries even without active IO 2015-06-11 17:13:01 -04:00
dm-cache-target.c dm: drop NULL test before kmem_cache_destroy() and mempool_destroy() 2015-10-31 19:06:00 -04:00
dm-crypt.c dm: drop NULL test before kmem_cache_destroy() and mempool_destroy() 2015-10-31 19:06:00 -04:00
dm-delay.c dm: do not override error code returned from dm_get_device() 2015-08-12 11:32:21 -04:00
dm-era-target.c block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
dm-exception-store.c dm: convert ffs to __ffs 2015-10-31 19:06:01 -04:00
dm-exception-store.h
dm-flakey.c dm: refactor ioctl handling 2015-10-31 19:05:59 -04:00
dm-io.c dm: drop NULL test before kmem_cache_destroy() and mempool_destroy() 2015-10-31 19:06:00 -04:00
dm-ioctl.c char: make misc_deregister a void function 2015-08-05 10:35:49 -07:00
dm-kcopyd.c
dm-linear.c dm: refactor ioctl handling 2015-10-31 19:05:59 -04:00
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 dm: refactor ioctl handling 2015-10-31 19:05:59 -04:00
dm-log.c
dm-mpath.c dm: add support for passing through persistent reservations 2015-10-31 19:05:59 -04:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c
dm-raid.c block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
dm-raid1.c Merge tag 'dm-4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm 2015-09-02 16:35:26 -07:00
dm-region-hash.c dm: convert ffs to __ffs 2015-10-31 19:06:01 -04:00
dm-round-robin.c
dm-service-time.c
dm-snap-persistent.c dm: convert ffs to __ffs 2015-10-31 19:06:01 -04:00
dm-snap-transient.c
dm-snap.c Merge tag 'dm-4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm 2015-09-02 16:35:26 -07:00
dm-stats.c dm stats: report precise_timestamps and histogram in @stats_list output 2015-08-18 17:20:03 -04:00
dm-stats.h dm stats: support precise timestamps 2015-06-17 12:40:40 -04:00
dm-stripe.c Merge tag 'dm-4.3-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm 2015-09-02 16:35:26 -07:00
dm-switch.c dm: refactor ioctl handling 2015-10-31 19:05:59 -04:00
dm-sysfs.c dm: add 'use_blk_mq' module param and expose in per-device ro sysfs attr 2015-04-15 12:10:17 -04:00
dm-table.c block: Replace SG_GAPS with new queue limits mask 2015-08-19 14:26:02 -07:00
dm-target.c
dm-thin-metadata.c dm thin metadata: delete btrees when releasing metadata snapshot 2015-08-12 10:42:51 -04:00
dm-thin-metadata.h dm thin metadata: add dm_thin_remove_range() 2015-06-11 17:13:04 -04:00
dm-thin.c dm thin: disable discard support for thin devices if pool's is disabled 2015-09-13 21:32:10 -04:00
dm-uevent.c
dm-uevent.h
dm-verity.c dm: refactor ioctl handling 2015-10-31 19:05:59 -04:00
dm-zero.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
dm.c dm: eliminate unused "bioset" process for each bio-based DM device 2015-10-31 19:06:02 -04:00
dm.h block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
faulty.c block: add a bi_error field to struct bio 2015-07-29 08:55:15 -06:00
Kconfig SCSI misc on 20150911 2015-09-11 18:15:18 -07:00
linear.c block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
linear.h
Makefile dm cache: add stochastic-multi-queue (smq) policy 2015-06-11 17:12:59 -04:00
md-cluster.c md-cluster: remove inappropriate try_module_get from join() 2015-08-31 19:43:17 +02:00
md-cluster.h Fix read-balancing during node failure 2015-07-24 13:37:59 +10:00
md.c md: clear CHANGE_PENDING in readonly array 2015-10-02 17:23:44 +10:00
md.h block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
multipath.c md: drop null test before destroy functions 2015-10-02 17:23:44 +10:00
multipath.h
raid0.c md/raid0: apply base queue limits *before* disk_stack_limits 2015-10-02 17:23:44 +10:00
raid0.h block: kill merge_bvec_fn() completely 2015-08-13 12:31:57 -06:00
raid1.c md/raid1: Avoid raid1 resync getting stuck 2015-10-02 17:23:44 +10:00
raid1.h md/raid1: ensure device failure recorded before write request returns. 2015-08-31 19:43:23 +02:00
raid5.c md: drop null test before destroy functions 2015-10-02 17:23:44 +10:00
raid5.h md/raid5: ensure device failure recorded before write request returns. 2015-08-31 19:43:59 +02:00
raid10.c md: drop null test before destroy functions 2015-10-02 17:23:44 +10:00
raid10.h md/raid10: ensure device failure recorded before write request returns. 2015-08-31 19:43:45 +02:00