Jens Axboe 5e84ea3a9c block: attempt to merge with existing requests on plug flush ... One of the disadvantages of on-stack plugging is that we potentially lose out on merging since all pending IO isn't always visible to everybody. When we flush the on-stack plugs, right now we don't do any checks to see if potential merge candidates could be utilized. Correct this by adding a new insert variant, ELEVATOR_INSERT_SORT_MERGE. It works just ELEVATOR_INSERT_SORT, but first checks whether we can merge with an existing request before doing the insertion (if we fail merging). This fixes a regression with multiple processes issuing IO that can be merged. Thanks to Shaohua Li <shaohua.li@intel.com> for testing and fixing an accounting bug. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>		2011-03-21 10:14:27 +01:00
..
blk-cgroup.c	blk-cgroup: Add unaccounted time to timeslice_used.	2011-03-12 16:54:00 +01:00
blk-cgroup.h	blk-cgroup: Add unaccounted time to timeslice_used.	2011-03-12 16:54:00 +01:00
blk-core.c	block: attempt to merge with existing requests on plug flush	2011-03-21 10:14:27 +01:00
blk-exec.c	Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core	2011-03-10 08:58:35 +01:00
blk-flush.c	Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core	2011-03-10 08:58:35 +01:00
blk-integrity.c	block: Fix double free in blk_integrity_unregister	2010-10-15 15:49:18 +02:00
blk-ioc.c	block: Clean up exit_io_context() source code.	2010-12-21 15:07:45 +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: remove obsolete comments for blkdev_issue_zeroout.	2011-03-11 20:13:54 +01:00
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	Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core	2011-03-10 08:58:35 +01:00
blk-softirq.c	generic-ipi: remove CSD_FLAG_WAIT	2009-02-25 14:13:44 +01:00
blk-sysfs.c	block: Move blk_throtl_exit() call to blk_cleanup_queue()	2011-03-02 19:06:49 -05:00
blk-tag.c	include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h	2010-03-30 22:02:32 +09:00
blk-throttle.c	Merge branch 'for-2.6.39/stack-plug' into for-2.6.39/core	2011-03-10 08:58:35 +01:00
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	block: attempt to merge with existing requests on plug flush	2011-03-21 10:14:27 +01:00
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	cfq-iosched: Don't update group weights when on service tree	2011-03-17 16:12:36 +01:00
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	block: attempt to merge with existing requests on plug flush	2011-03-21 10:14:27 +01:00
genhd.c	block: Don't implicitly trigger event check on disk_unblock_events()	2011-03-09 19:54:27 +01:00
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