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7278c9c19b
linux/block
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Gui Jianfeng 7278c9c19b cfq-iosched: don't check cfqg in choose_service_tree() 
When cfq_choose_cfqg() is called in select_queue(), there must be at least one
backlogged CFQ queue waiting for dispatching, hence there must be at least one
backlogged CFQ group on service tree. So we never call choose_service_tree()
with cfqg == NULL.

Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2010-12-17 08:57:14 +01:00
..
blk-cgroup.c blk-cgroup: Allow creation of hierarchical cgroups 2010-11-15 19:37:36 +01:00
blk-cgroup.h blkio-throttle: limit max iops value to UINT_MAX 2010-10-01 21:16:41 +02:00
blk-core.c block: Rename "block_remap" tracepoint to "block_bio_remap" to clarify the event. 2010-11-16 12:53:39 +01:00
blk-exec.c block: Prevent hang_check firing during long I/O 2010-09-24 15:52:09 +02:00
blk-flush.c block: remove BLKDEV_IFL_WAIT 2010-09-16 20:52:58 +02:00
blk-integrity.c block: Fix double free in blk_integrity_unregister 2010-10-15 15:49:18 +02:00
blk-ioc.c block: remove unused copy_io_context() 2010-11-11 13:40:11 +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 BLKDEV_IFL_WAIT 2010-09-16 20:52:58 +02:00
blk-map.c block: check for proper length of iov entries in blk_rq_map_user_iov() 2010-11-10 14:40:42 +01:00
blk-merge.c Revert "block: fix accounting bug on cross partition merges" 2010-10-24 22:06:02 +02:00
blk-settings.c Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block 2010-10-22 17:07:18 -07:00
blk-softirq.c generic-ipi: remove CSD_FLAG_WAIT 2009-02-25 14:13:44 +01:00
blk-sysfs.c block: fix use-after-free bug in blk throttle code 2010-10-23 20:40:26 +02:00
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 blkio-throttle: Fix possible multiplication overflow in iops calculations 2010-10-01 21:16:42 +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 Revert "block: fix accounting bug on cross partition merges" 2010-10-24 22:06:02 +02:00
bsg.c Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl 2010-10-22 10:52:56 -07:00
cfq-iosched.c cfq-iosched: don't check cfqg in choose_service_tree() 2010-12-17 08:57:14 +01:00
cfq.h blk-cgroup: Prepare the base for supporting more than one IO control policies 2010-09-16 08:42:04 +02:00
compat_ioctl.c block: read i_size with i_size_read() 2010-11-10 14:40:53 +01:00
deadline-iosched.c block: convert to pos and nr_sectors accessors 2009-05-11 09:50:54 +02:00
elevator.c block: remove REQ_HARDBARRIER 2010-11-10 14:54:09 +01:00
genhd.c Revert "block: fix accounting bug on cross partition merges" 2010-10-24 22:06:02 +02:00
ioctl.c Merge branch 'cleanup-bd_claim' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into for-2.6.38/core 2010-11-27 19:49:18 +01:00
Kconfig blkio: Core implementation of throttle policy 2010-09-16 08:42:52 +02:00
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 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
scsi_ioctl.c block: take care not to overflow when calculating total iov length 2010-11-10 14:40:42 +01:00