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Vivek Goyal 365722bb91 cfq-iosched: delay async IO dispatch, if sync IO was just done 
o Do not allow more than max_dispatch requests from an async queue, if some
  sync request has finished recently. This is in the hope that sync activity
  is still going on in the system and we might receive a sync request soon.
  Most likely from a sync queue which finished a request and we did not enable
  idling on it.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
 		2009-10-03 15:21:27 +02:00
..
Kconfig Make SCSI SG v4 driver enabled by default and remove EXPERIMENTAL dependency, since udev depends on BSG 2009-08-04 22:10:17 +02:00
Kconfig.iosched update I/O sched Kconfig help texts - CFQ is now default, not AS. 2007-02-17 20:08:22 +01:00
Makefile block: add blk-iopoll, a NAPI like approach for block devices 2009-09-11 14:33:31 +02:00
as-iosched.c percpu: clean up percpu variable definitions 2009-06-24 15:13:48 +09:00
blk-barrier.c block: allow large discard requests 2009-10-01 21:19:34 +02:00
blk-core.c Add a tracepoint for block request remapping 2009-10-01 21:19:34 +02:00
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: prevent possible io_context->refcount overflow 2009-06-10 23:07:15 +02:00
blk-iopoll.c block: use interrupts disabled version of raise_softirq_irqoff() 2009-09-11 14:33:32 +02:00
blk-map.c block: Use accessor functions for queue limits 2009-05-22 23:22:54 +02:00
blk-merge.c Seperate read and write statistics of in_flight requests 2009-09-14 08:24:52 +02:00
blk-settings.c block: allow large discard requests 2009-10-01 21:19:34 +02:00
blk-softirq.c generic-ipi: remove CSD_FLAG_WAIT 2009-02-25 14:13:44 +01:00
blk-sysfs.c Add missing blk_trace_remove_sysfs to be in pair with blk_trace_init_sysfs 2009-10-01 21:15:46 +02:00
blk-tag.c block: change the tag sync vs async restriction logic 2009-05-20 08:54:31 +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 Driver-Core: extend devnode callbacks to provide permissions 2009-09-19 12:50:38 -07:00
cfq-iosched.c cfq-iosched: delay async IO dispatch, if sync IO was just done 2009-10-03 15:21:27 +02:00
compat_ioctl.c Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block 2009-06-11 11:10:35 -07:00
deadline-iosched.c block: convert to pos and nr_sectors accessors 2009-05-11 09:50:54 +02:00
elevator.c bio: first step in sanitizing the bio->bi_rw flag testing 2009-09-11 14:33:31 +02:00
genhd.c Driver-Core: extend devnode callbacks to provide permissions 2009-09-19 12:50:38 -07:00
ioctl.c block: use blkdev_issue_discard in blk_ioctl_discard 2009-09-14 08:24:53 +02:00
noop-iosched.c block: get rid of elevator_t typedef 2008-12-29 08:29:50 +01:00
scsi_ioctl.c block: call blk_scsi_ioctl_init() 2009-07-10 20:31:53 +02:00