linux/block
Aaron Carroll 63de428b13 deadline-iosched: allow non-sequential batching
Deadline currently only batches sector-contiguous requests, so except
for a few circumstances (e.g. requests in a single direction), it is
essentially first come first served.  This is bad for throughput, so
change it to CSCAN, which means requests in a batch do not need to be
sequential and are issued in increasing sector order.

Signed-off-by: Aaron Carroll <aaronc@gelato.unsw.edu.au>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-10-09 08:56:02 +02:00
..
as-iosched.c Use WARN() in block/ 2008-07-26 12:00:07 -07:00
blk-barrier.c Allow elevators to sort/merge discard requests 2008-10-09 08:56:02 +02:00
blk-core.c Allow elevators to sort/merge discard requests 2008-10-09 08:56:02 +02:00
blk-exec.c block: unexport blk_end_sync_rq 2008-07-15 21:21:45 +02:00
blk-integrity.c block: integrity flags can't use bit ops on unsigned short 2008-07-03 13:21:15 +02:00
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 block/blk-map.c: use the new object_is_on_stack() helper 2008-07-26 12:00:02 -07:00
blk-merge.c Allow elevators to sort/merge discard requests 2008-10-09 08:56:02 +02:00
blk-settings.c Add 'discard' request handling 2008-10-09 08:56:01 +02:00
blk-sysfs.c block: sysfs store function needs to grab queue_lock and use queue_flag_*() 2008-05-07 09:09:39 +02:00
blk-tag.c block: remove unused ->busy part of the block queue tag map 2008-08-27 09:50:19 +02:00
blk.h block: Block layer data integrity support 2008-07-03 13:21:13 +02:00
blktrace.c blktrace: simplify flags handling in __blk_add_trace 2008-10-09 08:56:01 +02:00
bsg.c block: move cmdfilter from gendisk to request_queue 2008-08-27 09:50:19 +02:00
cfq-iosched.c cfq-iosched: get rid of enable_idle being unused warning 2008-07-03 13:21:14 +02:00
cmd-filter.c block: disable sysfs parts of the disk command filter 2008-09-11 14:20:23 +02:00
compat_ioctl.c Add BLKDISCARD ioctl to allow userspace to discard sectors 2008-10-09 08:56:02 +02:00
deadline-iosched.c deadline-iosched: allow non-sequential batching 2008-10-09 08:56:02 +02:00
elevator.c Allow elevators to sort/merge discard requests 2008-10-09 08:56:02 +02:00
genhd.c block: restore original behavior of /proc/partition when there's no partition 2008-09-01 08:55:10 +02:00
ioctl.c Allow elevators to sort/merge discard requests 2008-10-09 08:56:02 +02:00
Kconfig block: Block layer data integrity support 2008-07-03 13:21:13 +02:00
Kconfig.iosched update I/O sched Kconfig help texts - CFQ is now default, not AS. 2007-02-17 20:08:22 +01:00
Makefile allow userspace to modify scsi command filter on per device basis 2008-07-03 13:21:14 +02:00
noop-iosched.c block: let elv_register() return void 2007-12-18 08:29:28 +01:00
scsi_ioctl.c SG_IO block filter whitelist missing MMC SET READ AHEAD command 2008-10-09 08:56:00 +02:00