linux.git/block/elevator.c, branch v2.6.19

[PATCH] block layer: elv_iosched_show should get elv_list_lock

2006-10-12T13:08:51+00:00

elv_iosched_show function iterates other elv_list, hence
elv_list_lock should be got.

Signed-off-by: Vasily Tarasov 
Signed-off-by: Vasily Tarasov

[PATCH] block layer: elevator_find function cleanup

2006-10-12T13:08:51+00:00

We can easily produce search through the elevator list
without introducing additional elevator_type variable.

Signed-off-by: Vasily Tarasov 
Signed-off-by: Jens Axboe

[PATCH] Update axboe@suse.de email address

2006-09-30T18:52:34+00:00

As people often look for the copyright in files to see who to mail,
update the link to a neutral one.

Signed-off-by: Jens Axboe

[PATCH] Make sure all block/io scheduler setups are node aware

2006-09-30T18:29:39+00:00

Some were kmalloc_node(), some were still kmalloc(). Change them all to
kmalloc_node().

Signed-off-by: Jens Axboe

[PATCH] Drop useless bio passing in may_queue/set_request API

2006-09-30T18:29:23+00:00

It's not needed for anything, so kill the bio passing.

Signed-off-by: Jens Axboe

[PATCH] Remove ->waiting member from struct request

2006-09-30T18:29:12+00:00

As the comments indicates in blkdev.h, we can fold it into ->end_io_data
usage as that is really what ->waiting is. Fixup the users of
blk_end_sync_rq().

Signed-off-by: Jens Axboe

[PATCH] elevator: abstract out the rbtree sort handling

2006-09-30T18:26:57+00:00

The rbtree sort/lookup/reposition logic is mostly duplicated in
cfq/deadline/as, so move it to the elevator core. The io schedulers
still provide the actual rb root, as we don't want to impose any sort
of specific handling on the schedulers.

Introduce the helpers and rb_node in struct request to help migrate the
IO schedulers.

Signed-off-by: Jens Axboe

[PATCH] elevator: move the backmerging logic into the elevator core

2006-09-30T18:26:56+00:00

Right now, every IO scheduler implements its own backmerging (except for
noop, which does no merging). That results in duplicated code for
essentially the same operation, which is never a good thing. This patch
moves the backmerging out of the io schedulers and into the elevator
core. We save 1.6kb of text and as a bonus get backmerging for noop as
well. Win-win!

Signed-off-by: Jens Axboe

[PATCH] Split struct request ->flags into two parts

2006-09-30T18:23:37+00:00

Right now ->flags is a bit of a mess: some are request types, and
others are just modifiers. Clean this up by splitting it into
->cmd_type and ->cmd_flags. This allows introduction of generic
Linux block message types, useful for sending generic Linux commands
to block devices.

Signed-off-by: Jens Axboe

elv_unregister: fix possible crash on module unload

2006-08-22T19:52:23+00:00

An exiting task or process which didn't do I/O yet have no io context,
elv_unregister() should check it is not NULL.

Signed-off-by: Oleg Nesterov 
Acked-by: Jens Axboe 
Signed-off-by: Greg Kroah-Hartman