Shaohua Li ef8a41df8c cfq-iosched: give busy sync queue no dispatch limit ... If there are a sync and an async queue and the sync queue's think time is small, we can ignore the sync queue's dispatch quantum. Because the sync queue will always preempt the async queue, we don't need to care about async's latency. This can fix a performance regression of aiostress test, which is introduced by commit f8ae6e3eb8. The issue should exist even without the commit, but the commit amplifies the impact. The initial post does the same optimization for RT queue too, but since I have no real workload for it, Vivek suggests to drop it. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Reviewed-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>		2011-03-07 09:26:29 +01:00
..
blk-cgroup.c	blk-cgroup: Allow creation of hierarchical cgroups	2010-11-15 19:37:36 +01:00
blk-cgroup.h	blkio-throttle: limit max iops value to UINT_MAX	2010-10-01 21:16:41 +02:00
blk-core.c	block: Move blk_throtl_exit() call to blk_cleanup_queue()	2011-03-02 19:06:49 -05:00
blk-exec.c	block: Prevent hang_check firing during long I/O	2010-09-24 15:52:09 +02:00
blk-flush.c	block: reimplement FLUSH/FUA to support merge	2011-01-25 12:43:54 +01:00
blk-integrity.c	block: Fix double free in blk_integrity_unregister	2010-10-15 15:49:18 +02:00
blk-ioc.c	block: Clean up exit_io_context() source code.	2010-12-21 15:07:45 +01:00
blk-iopoll.c	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
blk-lib.c	block: remove BLKDEV_IFL_WAIT	2010-09-16 20:52:58 +02:00
blk-map.c	block: check for proper length of iov entries earlier in blk_rq_map_user_iov()	2010-11-29 10:04:50 +01:00
blk-merge.c	Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block	2011-01-13 10:45:01 -08:00
blk-settings.c	block: Initialize ->queue_lock to internal lock at queue allocation time	2011-03-02 19:06:49 -05:00
blk-softirq.c	generic-ipi: remove CSD_FLAG_WAIT	2009-02-25 14:13:44 +01:00
blk-sysfs.c	block: Move blk_throtl_exit() call to blk_cleanup_queue()	2011-03-02 19:06:49 -05:00
blk-tag.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
blk-throttle.c	block: Move blk_throtl_exit() call to blk_cleanup_queue()	2011-03-02 19:06:49 -05:00
blk-timeout.c	block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer	2010-04-21 17:42:08 +02:00
blk.h	block: reimplement FLUSH/FUA to support merge	2011-01-25 12:43:54 +01:00
bsg.c	[SCSI] bsg: correct fault if queue object removed while dev_t open	2010-12-09 09:41:14 -06:00
cfq-iosched.c	cfq-iosched: give busy sync queue no dispatch limit	2011-03-07 09:26:29 +01:00
cfq.h	blk-cgroup: Prepare the base for supporting more than one IO control policies	2010-09-16 08:42:04 +02:00
compat_ioctl.c	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
deadline-iosched.c	block: convert to pos and nr_sectors accessors	2009-05-11 09:50:54 +02:00
elevator.c	block: share request flush fields with elevator_private	2011-02-11 11:08:00 +01:00
genhd.c	block/genhd: Change some numerals into macros	2011-03-02 11:00:15 -05:00
ioctl.c	Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block	2011-01-13 10:45:01 -08:00
Kconfig	kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT	2011-01-20 17:02:05 -08:00
Kconfig.iosched	blk-cgroup: config options re-arrangement	2010-04-26 19:27:56 +02:00
Makefile	Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block	2010-10-22 17:07:18 -07:00
noop-iosched.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
scsi_ioctl.c	block: take care not to overflow when calculating total iov length	2010-11-10 14:40:42 +01:00