Corrado Zoccolo 41647e7a91 cfq-iosched: rethink seeky detection for SSDs ...

CFQ currently applies the same logic of detecting seeky queues and
grouping them together for rotational disks as well as SSDs.
For SSDs, the time to complete a request doesn't depend on the
request location, but only on the size.
This patch therefore changes the criterion to group queues by
request size in case of SSDs, in order to achieve better fairness.

Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

2010-02-28 19:41:25 +01:00

..

blk-barrier.c

block: Honor the gfp_mask for alloc_page() in blkdev_issue_discard()

2009-12-29 08:53:54 +01:00

blk-cgroup.c

cfq: Remove useless css reference get

2010-02-26 08:56:15 +01:00

blk-cgroup.h

cfq: Remove useless css reference get

2010-02-26 08:56:15 +01:00

blk-core.c

block: Consolidate phys_segment and hw_segment limits

2010-02-26 13:58:08 +01:00

blk-exec.c

block: don't set REQ_NOMERGE unnecessarily

2009-04-28 07:37:33 +02:00

blk-integrity.c

block: fix improper kobject release in blk_integrity_unregister

2009-07-28 09:11:14 +02:00

blk-ioc.c

block: removed unused as_io_context

2010-01-11 14:29:20 +01:00

blk-iopoll.c

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

blk-map.c

block: Use accessor functions for queue limits

2009-05-22 23:22:54 +02:00

blk-merge.c

block: Consolidate phys_segment and hw_segment limits

2010-02-26 13:58:08 +01:00

blk-settings.c

block: Consolidate phys_segment and hw_segment limits

2010-02-26 13:58:08 +01:00

blk-softirq.c

generic-ipi: remove CSD_FLAG_WAIT

2009-02-25 14:13:44 +01:00

blk-sysfs.c

block: Added in stricter no merge semantics for block I/O

2010-01-29 09:04:08 +01:00

blk-tag.c

block: use proper BLK_RW_ASYNC in blk_queue_start_tag()

2009-10-06 20:19:02 +02:00

blk-timeout.c

block: clean up misc stuff after block layer timeout conversion

2009-04-28 07:37:34 +02:00

blk.h

block: implement mixed merge of different failfast requests

2009-09-11 14:33:30 +02:00

bsg.c

block: jiffies fixes

2009-11-11 13:47:45 +01:00

cfq-iosched.c

cfq-iosched: rethink seeky detection for SSDs

2010-02-28 19:41:25 +01:00

compat_ioctl.c

block: Allow devices to indicate whether discarded blocks are zeroed

2009-12-03 09:24:48 +01:00

deadline-iosched.c

block: convert to pos and nr_sectors accessors

2009-05-11 09:50:54 +02:00

elevator.c

block: Added in stricter no merge semantics for block I/O

2010-01-29 09:04:08 +01:00

genhd.c

block: Fix discard alignment calculation and printing

2010-01-11 14:29:19 +01:00

ioctl.c

block: Allow devices to indicate whether discarded blocks are zeroed

2009-12-03 09:24:48 +01:00

Kconfig

blkio: Some debugging aids for CFQ

2009-12-03 19:28:52 +01:00

Kconfig.iosched

blkio: Allow CFQ group IO scheduling even when CFQ is a module

2009-12-04 16:38:14 +01:00

Makefile

blkio: Introduce blkio controller cgroup interface

2009-12-03 19:28:51 +01:00

noop-iosched.c

block: get rid of elevator_t typedef

2008-12-29 08:29:50 +01:00

scsi_ioctl.c

block/scsi_ioctl.c: quiet sparse noise

2009-11-04 09:10:33 +01:00