Jens Axboe f793aa5378 block: relax when to modify the timeout timer ... Since we are now, by default, applying timer slack to expiry times, the logic for when to modify a timer in the block code is suboptimal. The block layer keeps a forward rolling timer per queue for all requests, and modifies this timer if a request has a shorter timeout than what the current expiry time is. However, this breaks down when our rounded timer values get applied slack. Then each new request ends up modifying the timer, since we're still a little in front of the timer + slack. Fix this by allowing a tolerance of HZ / 2, the timeout handling doesn't need to be very precise. This drastically cuts down the number of timer modifications we have to make. Signed-off-by: Jens Axboe <axboe@fb.com>		2014-04-16 14:15:25 -06:00
..
partitions	block: Use macros from compiler.h instead of __attribute__((...))	2014-02-18 12:20:01 -08:00
Kconfig	block: change config option name for cmdline partition parsing	2013-09-30 14:31:02 -07:00
Kconfig.iosched	blkcg: make CONFIG_BLK_CGROUP bool	2012-03-06 21:27:21 +01:00
Makefile	blk-mq: new multi-queue block IO queueing mechanism	2013-10-25 11:56:00 +01:00
blk-cgroup.c	Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-04-03 13:05:42 -07:00
blk-cgroup.h	Merge branch 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2014-04-03 13:05:42 -07:00
blk-core.c	block: export blk_finish_request	2014-04-16 14:15:25 -06:00
blk-exec.c	blk-mq: merge blk_mq_insert_request and blk_mq_run_request	2014-03-21 08:57:37 -06:00
blk-flush.c	blk-mq: rename mq_flush_work struct request member	2014-04-16 14:15:25 -06:00
blk-integrity.c	bio-integrity: Convert to bvec_iter	2013-11-23 22:33:50 -08:00
blk-ioc.c	block: Substitute rcu_access_pointer() for rcu_dereference_raw()	2014-02-18 12:21:26 -08:00
blk-iopoll.c	block: remove old blk_iopoll_enabled variable	2014-03-13 09:38:42 -06:00
blk-lib.c	block: add cond_resched() to potentially long running ioctl discard loop	2014-02-12 09:36:37 -07:00
blk-map.c	block: remove struct request buffer member	2014-04-15 14:03:02 -06:00
blk-merge.c	block: Explicitly handle discard/write same segments	2014-02-07 13:54:08 -07:00
blk-mq-cpu.c	rt,blk,mq: Make blk_mq_cpu_notify_lock a raw spinlock	2014-03-21 08:57:56 -06:00
blk-mq-cpumap.c	blk-mq: split out tag initialization, support shared tags	2014-04-15 14:18:02 -06:00
blk-mq-sysfs.c	blk-mq: simplify blk_mq_hw_sysfs_cpus_show()	2014-04-09 10:53:21 -06:00
blk-mq-tag.c	blk-mq: split out tag initialization, support shared tags	2014-04-15 14:18:02 -06:00
blk-mq-tag.h	blk-mq: split out tag initialization, support shared tags	2014-04-15 14:18:02 -06:00
blk-mq.c	blk-mq: add blk_mq_requeue_request	2014-04-16 14:15:25 -06:00
blk-mq.h	blk-mq: split out tag initialization, support shared tags	2014-04-15 14:18:02 -06:00
blk-settings.c	bcache/md: Use raid stripe size	2014-01-08 13:05:09 -08:00
blk-softirq.c	block: fix regression with block enabled tagging	2014-04-09 21:54:06 -06:00
blk-sysfs.c	blk-mq: rework flush sequencing logic	2014-02-10 09:29:00 -07:00
blk-tag.c	block: Reserve only one queue tag for sync IO if only 3 tags are available	2013-06-28 21:32:27 +02:00
blk-throttle.c	cgroup: drop const from @buffer of cftype->write_string()	2014-03-19 10:23:54 -04:00
blk-timeout.c	block: relax when to modify the timeout timer	2014-04-16 14:15:25 -06:00
blk.h	block: fix regression with block enabled tagging	2014-04-09 21:54:06 -06:00
bsg-lib.c	bsg: Remove unused function bsg_goose_queue()	2012-12-06 14:33:02 +01:00
bsg.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
cfq-iosched.c	block: remove 'q' parameter from kblockd_schedule_*_work()	2014-04-09 10:17:00 -06:00
cmdline-parser.c	block: remove unrelated header files and export symbol	2014-01-21 20:18:26 -08:00
compat_ioctl.c	kernel-wide: fix missing validations on __get/__put/__copy_to/__copy_from_user()	2013-09-11 15:58:18 -07:00
deadline-iosched.c	block: Stop abusing csd.list for fifo_time	2014-02-24 14:46:32 -08:00
elevator.c	block: fix regression with block enabled tagging	2014-04-09 21:54:06 -06:00
genhd.c	block: Convert kmalloc_node(...GFP_ZERO...) to kzalloc_node(...)	2013-09-11 13:22:03 -06:00
ioctl.c	block: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO	2013-11-08 09:05:31 -07:00
noop-iosched.c	elevator: Fix a race in elevator switching	2013-07-03 13:25:24 +02:00
partition-generic.c	Revert "loop: cleanup partitions when detaching loop device"	2013-04-08 10:12:11 +02:00
scsi_ioctl.c	block: Fix memory leak in rw_copy_check_uvector() handling	2014-01-21 20:36:17 -08:00