Jens Axboe fc46379daf [PATCH] cfq-iosched: kill cfq_exit_lock ... cfq_exit_lock is protecting two things now: - The per-ioc rbtree of cfq_io_contexts - The per-cfqd linked list of cfq_io_contexts The per-cfqd linked list can be protected by the queue lock, as it is (by definition) per cfqd as the queue lock is. The per-ioc rbtree is mainly used and updated by the process itself only. The only outside use is the io priority changing. If we move the priority changing to not browsing the rbtree, we can remove any locking from the rbtree updates and lookup completely. Let the sys_ioprio syscall just mark processes as having the iopriority changed and lazily update the private cfq io contexts the next time io is queued, and we can remove this locking as well. Signed-off-by: Jens Axboe <axboe@suse.de>		2006-09-30 20:29:36 +02:00
..
as-iosched.c	[PATCH] Drop useless bio passing in may_queue/set_request API	2006-09-30 20:29:23 +02:00
blktrace.c	[PATCH] ifdef blktrace debugging fields	2006-09-29 09:18:09 -07:00
cfq-iosched.c	[PATCH] cfq-iosched: kill cfq_exit_lock	2006-09-30 20:29:36 +02:00
deadline-iosched.c	[PATCH] deadline-iosched: remove elevator private drq request type	2006-09-30 20:27:00 +02:00
elevator.c	[PATCH] Drop useless bio passing in may_queue/set_request API	2006-09-30 20:29:23 +02:00
genhd.c	[PATCH] block: handle subsystem_register() init errors	2006-09-29 09:18:05 -07:00
ioctl.c	[PATCH] lockdep: annotate the BLKPG_DEL_PARTITION ioctl	2006-07-14 21:53:53 -07:00
Kconfig	[PATCH] config: fix CONFIG_LFS option	2006-03-31 12:18:55 -08:00
Kconfig.iosched	[PATCH] Make CFQ the default IO scheduler	2006-06-23 17:10:39 +02:00
ll_rw_blk.c	[PATCH] cfq-iosched: kill cfq_exit_lock	2006-09-30 20:29:36 +02:00
Makefile	[PATCH] Block queue IO tracing support (blktrace) as of 2006-03-23	2006-03-23 20:00:26 +01:00
noop-iosched.c	[PATCH] elevator switching race	2006-06-08 15:14:23 -07:00
scsi_ioctl.c	[PATCH] Split struct request ->flags into two parts	2006-09-30 20:23:37 +02:00