James Bottomley 5e4c1dbf52 block: add proper state guards to __elv_next_request ...

commit 0a58e077eb upstream.

blk_cleanup_queue() calls elevator_exit() and after this, we can't
touch the elevator without oopsing.  __elv_next_request() must check
for this state because in the refcounted queue model, we can still
call it after blk_cleanup_queue() has been called.

This was reported as causing an oops attributable to scsi.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2011-06-23 15:24:01 -07:00

..

as-iosched.c

percpu: clean up percpu variable definitions

2009-06-24 15:13:48 +09:00

blk-barrier.c

block: allow large discard requests

2009-10-01 21:19:34 +02:00

blk-core.c

block: silently error unsupported empty barriers too

2009-10-24 14:14:31 +02:00

blk-exec.c

block: don't set REQ_NOMERGE unnecessarily

2009-04-28 07:37:33 +02:00

blk-integrity.c

block: fix improper kobject release in blk_integrity_unregister

2009-07-28 09:11:14 +02:00

blk-ioc.c

block: prevent possible io_context->refcount overflow

2009-06-10 23:07:15 +02:00

blk-iopoll.c

block: use interrupts disabled version of raise_softirq_irqoff()

2009-09-11 14:33:32 +02:00

blk-map.c

block: check for proper length of iov entries in blk_rq_map_user_iov()

2010-12-09 13:26:30 -08:00

blk-merge.c

block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead

2011-01-07 14:43:18 -08:00

blk-settings.c

block: Deprecate QUEUE_FLAG_CLUSTER and use queue_limits instead

2011-01-07 14:43:18 -08:00

blk-softirq.c

generic-ipi: remove CSD_FLAG_WAIT

2009-02-25 14:13:44 +01:00

blk-sysfs.c

block, blk-sysfs: Fix an err return path in blk_register_queue()

2011-05-09 15:54:46 -07:00

blk-tag.c

block: use proper BLK_RW_ASYNC in blk_queue_start_tag()

2009-10-06 20:19:02 +02:00

blk-timeout.c

block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer

2010-05-12 14:57:05 -07:00

blk.h

block: add proper state guards to __elv_next_request

2011-06-23 15:24:01 -07:00

bsg.c

bsg: fix incorrect device_status value

2010-10-28 21:44:11 -07:00

cfq-iosched.c

cfq-iosched: limit coop preemption

2009-11-03 20:25:02 +01:00

compat_ioctl.c

block: Topology ioctls

2009-10-03 20:52:01 +02:00

deadline-iosched.c

block: convert to pos and nr_sectors accessors

2009-05-11 09:50:54 +02:00

elevator.c

elv_iosched_store(): fix strstrip() misuse

2009-10-09 08:48:08 +02:00

genhd.c

block: Seperate read and write statistics of in_flight requests v2

2009-10-06 20:16:55 +02:00

ioctl.c

block: Topology ioctls

2009-10-03 20:52:01 +02:00

Kconfig

Make SCSI SG v4 driver enabled by default and remove EXPERIMENTAL dependency, since udev depends on BSG

2009-08-04 22:10:17 +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

block: add blk-iopoll, a NAPI like approach for block devices

2009-09-11 14:33:31 +02:00

noop-iosched.c

block: get rid of elevator_t typedef

2008-12-29 08:29:50 +01:00

scsi_ioctl.c

block: take care not to overflow when calculating total iov length

2010-12-09 13:26:30 -08:00