Jens Axboe f2d1f0ae78 cfq-iosched: cache prio_tree root in cfqq->p_root ... Currently we look it up from ->ioprio, but ->ioprio can change if either the process gets its IO priority changed explicitly, or if cfq decides to temporarily boost it. So if we are unlucky, we can end up attempting to remove a node from a different rbtree root than where it was added. Fix this by using ->org_ioprio as the prio_tree index, since that will only change for explicit IO priority settings (not for a boost). Additionally cache the rbtree root inside the cfqq, then we don't have to add code to reinsert the cfqq in the prio_tree if IO priority changes. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>		2009-04-24 08:54:22 +02:00
..
Kconfig	tracing/blktrace: move the tracing file to kernel/trace	2009-02-09 10:51:02 +01:00
Kconfig.iosched	update I/O sched Kconfig help texts - CFQ is now default, not AS.	2007-02-17 20:08:22 +01:00
Makefile	tracing/blktrace: move the tracing file to kernel/trace	2009-02-09 10:51:02 +01:00
as-iosched.c	as-iosched: get rid of private REQ_SYNC/REQ_ASYNC defines	2009-04-15 08:28:10 +02:00
blk-barrier.c	block: Remove code handling bio_alloc failure with __GFP_WAIT	2009-04-15 12:10:12 +02:00
blk-core.c	block: simplify I/O stat accounting	2009-04-24 08:54:21 +02:00
blk-exec.c	Add some block/ source files to the kernel-api docbook. Fix kernel-doc notation in them as needed. Fix changed function parameter names. Fix typos/spellos. In comments, change REQ_SPECIAL to REQ_TYPE_SPECIAL and REQ_BLOCK_PC to REQ_TYPE_BLOCK_PC.	2008-10-09 08:56:03 +02:00
blk-integrity.c	block: Allow empty integrity profile	2009-01-30 12:34:36 +01:00
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	[SCSI] block: make blk_rq_map_user take a NULL user-space buffer for WRITE	2009-01-02 11:10:35 -06:00
blk-merge.c	block: simplify I/O stat accounting	2009-04-24 08:54:21 +02:00
blk-settings.c	block: fix queue bounce limit setting	2009-04-22 08:35:09 +02:00
blk-softirq.c	generic-ipi: remove CSD_FLAG_WAIT	2009-02-25 14:13:44 +01:00
blk-sysfs.c	block: simplify I/O stat accounting	2009-04-24 08:54:21 +02:00
blk-tag.c	block/blk-tag.c: cleanup kernel-doc	2008-12-29 08:28:43 +01:00
blk-timeout.c	block: fix intermittent dm timeout based oops	2009-04-24 08:54:21 +02:00
blk.h	block: simplify I/O stat accounting	2009-04-24 08:54:21 +02:00
bsg.c	bsg: Remove bogus check against request_queue->max_sectors	2009-03-26 11:01:25 +01:00
cfq-iosched.c	cfq-iosched: cache prio_tree root in cfqq->p_root	2009-04-24 08:54:22 +02:00
cmd-filter.c	[SCSI] Make scsi.h independent of the rest of the scsi includes	2009-03-12 12:58:13 -05:00
compat_ioctl.c	block: don't take lock on changing ra_pages	2008-12-29 08:28:43 +01:00
deadline-iosched.c	block: get rid of elevator_t typedef	2008-12-29 08:29:50 +01:00
elevator.c	block: fix bad spelling of quiesce	2009-04-15 08:28:09 +02:00
genhd.c	block: include empty disks in /proc/diskstats	2009-04-22 08:35:10 +02:00
ioctl.c	block: Remove code handling bio_alloc failure with __GFP_WAIT	2009-04-15 12:10:12 +02:00
noop-iosched.c	block: get rid of elevator_t typedef	2008-12-29 08:29:50 +01:00
scsi_ioctl.c	block: fix SG_IO vector request data length handling	2009-04-22 08:35:09 +02:00