Jens Axboe aeb6fafb8f block: Add flag for telling the IO schedulers NOT to anticipate more IO ... By default, CFQ will anticipate more IO from a given io context if the previously completed IO was sync. This used to be fine, since the only sync IO was reads and O_DIRECT writes. But with more "normal" sync writes being used now, we don't want to anticipate for those. Add a bio/request flag that informs the IO scheduler that this is a sync request that we should not idle for. Introduce WRITE_ODIRECT specifically for O_DIRECT writes, and make sure that the other sync writes set this flag. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2009-04-06 08:04:54 -07:00
..
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
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: Add flag for telling the IO schedulers NOT to anticipate more IO	2009-04-06 08:04:54 -07:00
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: WARN in __blk_put_request() for potential bio leak	2009-03-26 11:01:23 +01:00
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: change the request allocation/congestion logic to be sync/async based	2009-04-06 08:04:53 -07:00
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	cpumask: use topology_core_cpumask/topology_thread_cpumask instead of cpu_core_map/cpu_sibling_map	2009-03-13 14:49:46 +10:30
bsg.c	bsg: Remove bogus check against request_queue->max_sectors	2009-03-26 11:01:25 +01:00
cfq-iosched.c	block: Add flag for telling the IO schedulers NOT to anticipate more IO	2009-04-06 08:04:54 -07:00
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: change the request allocation/congestion logic to be sync/async based	2009-04-06 08:04:53 -07:00
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
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