Vivek Goyal af75cd3c67 blk-throttle: Make no throttling rule group processing lockless ... Currently we take a queue lock on each bio to check if there are any throttling rules associated with the group and also update the stats. Now access the group under rcu and update the stats without taking the queue lock. Queue lock is taken only if there are throttling rules associated with the group. So the common case of root group when there are no rules, save unnecessary pounding of request queue lock. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>		2011-05-20 20:34:53 +02:00
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blk-cgroup.c	blk-cgroup: Make cgroup stat reset path blkg->lock free for dispatch stats	2011-05-20 20:34:53 +02:00
blk-cgroup.h	blk-cgroup: Make 64bit per cpu stats safe on 32bit arch	2011-05-20 20:34:53 +02:00
blk-core.c	blk-cgroup: Allow sleeping while dynamically allocating a group	2011-05-20 20:34:52 +02:00
blk-exec.c	block: Remove 'plug/unplug' comment in blk_execute_rq_nowait	2011-05-05 15:10:05 -06:00
blk-flush.c	block: hold queue if flush is running for non-queueable flush drive	2011-05-06 11:36:25 -06:00
blk-integrity.c	dm: improve block integrity support	2011-04-05 23:52:43 +02:00
blk-ioc.c	block: Clean up exit_io_context() source code.	2010-12-21 15:07:45 +01:00
blk-iopoll.c
blk-lib.c	blkdev: Do not return -EOPNOTSUPP if discard is supported	2011-05-06 19:30:01 -06:00
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	block: attempt to merge with existing requests on plug flush	2011-03-21 10:14:27 +01:00
blk-settings.c	block: Fix discard topology stacking and reporting	2011-05-18 10:37:35 +02:00
blk-softirq.c
blk-sysfs.c	Merge commit 'v2.6.39' into for-2.6.40/core	2011-05-20 20:33:15 +02:00
blk-tag.c
blk-throttle.c	blk-throttle: Make no throttling rule group processing lockless	2011-05-20 20:34:53 +02:00
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	Merge commit 'v2.6.39' into for-2.6.40/core	2011-05-20 20:33:15 +02:00
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	blk-throttle: Make dispatch stats per cpu	2011-05-20 20:34:52 +02:00
cfq.h	blk-cgroup: Add unaccounted time to timeslice_used.	2011-03-12 16:54:00 +01:00
compat_ioctl.c	BKL: remove extraneous #include <smp_lock.h>	2010-11-17 08:59:32 -08:00
deadline-iosched.c	block: remove per-queue plugging	2011-03-10 08:52:07 +01:00
elevator.c	Merge commit 'v2.6.39' into for-2.6.40/core	2011-05-20 20:33:15 +02:00
genhd.c	block: don't propagate unlisted DISK_EVENTs to userland	2011-04-21 19:43:58 +02:00
ioctl.c	block: fix refcounting in BLKBSZSET	2011-02-24 08:54:21 -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	block: remove per-queue plugging	2011-03-10 08:52:07 +01:00
scsi_ioctl.c	block: take care not to overflow when calculating total iov length	2010-11-10 14:40:42 +01:00