Shaohua Li 274193224c block: recursive merge requests ...

In my workload, thread 1 accesses a, a+2, ..., thread 2 accesses a+1,
a+3,.... When the requests are flushed to queue, a and a+1 are merged
to (a, a+1), a+2 and a+3 too to (a+2, a+3), but (a, a+1) and (a+2, a+3)
aren't merged.
With recursive merge below, the workload throughput gets improved 20%
and context switch drops 60%.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

2011-12-16 14:00:31 +01:00

..

blk-cgroup.c

block, cfq: unlink cfq_io_context's immediately

2011-12-14 00:33:39 +01:00

blk-cgroup.h

block: fix a typo in the blk-cgroup.h file

2011-10-24 16:08:38 +02:00

blk-core.c

block, cfq: move icq creation and rq->elv.icq association to block core

2011-12-14 00:33:42 +01:00

blk-exec.c

block: add missing blk_queue_dead() checks

2011-12-14 00:33:37 +01:00

blk-flush.c

blk-flush: move the queue kick into

2011-10-24 16:24:31 +02:00

blk-integrity.c

block: add export.h to files using EXPORT_SYMBOL/THIS_MODULE macros

2011-10-31 19:31:12 -04:00

blk-ioc.c

block, cfq: move icq creation and rq->elv.icq association to block core

2011-12-14 00:33:42 +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: fix patch import error in max_discard_sectors check

2011-07-23 20:34:59 +02:00

blk-map.c

block: Always check length of all iov entries in blk_rq_map_user_iov()

2011-11-13 19:58:09 +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

block: Don't check QUEUE_FLAG_SAME_COMP in __blk_complete_request

2011-09-14 09:31:01 +02:00

blk-sysfs.c

block, cfq: move io_cq exit/release to blk-ioc.c

2011-12-14 00:33:42 +01:00

blk-tag.c

block: warn if tag is greater than real_max_depth.

2011-10-25 10:20:05 +02:00

blk-throttle.c

block: add blk_queue_dead()

2011-12-14 00:33:37 +01:00

blk-timeout.c

fault-injection: add ability to export fault_attr in arbitrary directory

2011-08-03 14:25:20 -10:00

blk.h

block, cfq: move icq creation and rq->elv.icq association to block core

2011-12-14 00:33:42 +01:00

bsg-lib.c

block: Change module.h -> export.h in bsg-lib.c

2011-10-31 19:31:13 -04:00

bsg.c

block: misc updates to blk_get_queue()

2011-12-14 00:33:38 +01:00

cfq-iosched.c

block, cfq: fix empty queue crash caused by request merge

2011-12-16 14:00:22 +01:00

cfq.h

blk-cgroup: Add unaccounted time to timeslice_used.

2011-03-12 16:54:00 +01:00

compat_ioctl.c

compat_ioctl: fix warning caused by qemu

2011-07-01 22:32:26 +02:00

deadline-iosched.c

block, cfq: move icq cache management to block core

2011-12-14 00:33:42 +01:00

elevator.c

block: recursive merge requests

2011-12-16 14:00:31 +01:00

genhd.c

block: misc updates to blk_get_queue()

2011-12-14 00:33:38 +01:00

ioctl.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

Kconfig

block: add bsg helper library

2011-07-31 22:05:09 +02:00

Kconfig.iosched

blk-cgroup: config options re-arrangement

2010-04-26 19:27:56 +02:00

Makefile

block: add bsg helper library

2011-07-31 22:05:09 +02:00

noop-iosched.c

block, cfq: move icq cache management to block core

2011-12-14 00:33:42 +01:00

scsi_ioctl.c

block: drop unnecessary blk_get/put_queue() in scsi_cmd_ioctl() and blk_get_tg()

2011-10-19 14:31:25 +02:00