Jens Axboe b029195dda cfq-iosched: don't let idling interfere with plugging ... When CFQ is waiting for a new request from a process, currently it'll immediately restart queuing when it sees such a request. This doesn't work very well with streamed IO, since we then end up splitting IO that would otherwise have been merged nicely. For a simple dd test, this causes 10x as many requests to be issued as we should have. Normally this goes unnoticed due to the low overhead of requests at the device side, but some hardware is very sensitive to request sizes and there it can cause big slow downs. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>		2009-04-07 11:38:31 +02:00
..
as-iosched.c	block: get rid of elevator_t typedef	2008-12-29 08:29:50 +01:00
blk-barrier.c	block: Fix documentation for blkdev_issue_flush()	2009-01-30 12:34:37 +01:00
blk-core.c	block: remove unused REQ_UNPLUG	2009-04-07 08:59:11 +02:00
blk-exec.c	Add some block/ source files to the kernel-api docbook. Fix kernel-doc notation in them as needed. Fix changed function parameter names. Fix typos/spellos. In comments, change REQ_SPECIAL to REQ_TYPE_SPECIAL and REQ_BLOCK_PC to REQ_TYPE_BLOCK_PC.	2008-10-09 08:56:03 +02:00
blk-integrity.c	block: Allow empty integrity profile	2009-01-30 12:34:36 +01:00
blk-ioc.c	cfq-iosched: fix RCU race in the cfq io_context destructor handling	2008-05-07 09:28:57 +02:00
blk-map.c	[SCSI] block: make blk_rq_map_user take a NULL user-space buffer for WRITE	2009-01-02 11:10:35 -06:00
blk-merge.c	block: fix inconsistency in I/O stat accounting code	2009-04-07 08:12:38 +02:00
blk-settings.c	block: use min_not_zero in blk_queue_stack_limits	2008-12-29 08:29:51 +01:00
blk-softirq.c	generic-ipi: remove CSD_FLAG_WAIT	2009-02-25 14:13:44 +01:00
blk-sysfs.c	block: fix inconsistency in I/O stat accounting code	2009-04-07 08:12:38 +02:00
blk-tag.c	block/blk-tag.c: cleanup kernel-doc	2008-12-29 08:28:43 +01:00
blk-timeout.c	block: fix deadlock in blk_abort_queue() for drivers that readd to timeout list	2009-02-18 10:34:16 +01:00
blk.h	block: fix inconsistency in I/O stat accounting code	2009-04-07 08:12:38 +02:00
bsg.c	bsg: Remove bogus check against request_queue->max_sectors	2009-03-26 11:01:25 +01:00
cfq-iosched.c	cfq-iosched: don't let idling interfere with plugging	2009-04-07 11:38:31 +02:00
cmd-filter.c	[SCSI] Make scsi.h independent of the rest of the scsi includes	2009-03-12 12:58:13 -05:00
compat_ioctl.c	block: don't take lock on changing ra_pages	2008-12-29 08:28:43 +01:00
deadline-iosched.c	block: get rid of elevator_t typedef	2008-12-29 08:29:50 +01:00
elevator.c	block: fix inconsistency in I/O stat accounting code	2009-04-07 08:12:38 +02:00
genhd.c	block: add documentation for register_blkdev()	2009-02-26 10:45:48 +01:00
ioctl.c	block: don't take lock on changing ra_pages	2008-12-29 08:28:43 +01:00
Kconfig	tracing/blktrace: move the tracing file to kernel/trace	2009-02-09 10:51:02 +01:00
Kconfig.iosched	update I/O sched Kconfig help texts - CFQ is now default, not AS.	2007-02-17 20:08:22 +01:00
Makefile	tracing/blktrace: move the tracing file to kernel/trace	2009-02-09 10:51:02 +01:00
noop-iosched.c	block: get rid of elevator_t typedef	2008-12-29 08:29:50 +01:00
scsi_ioctl.c	block: WARN in __blk_put_request() for potential bio leak	2009-03-26 11:01:23 +01:00