Wanlong Gao d11bb4462c blk-cgroup: be able to remove the record of unplugged device ... The bug is we're not able to remove the device from blkio cgroup's per-device control files if it gets unplugged. To reproduce the bug: # mount -t cgroup -o blkio xxx /cgroup # cd /cgroup # echo "8:0 1000" > blkio.throttle.read_bps_device # unplug the device # cat blkio.throttle.read_bps_device 8:0 1000 # echo "8:0 0" > blkio.throttle.read_bps_device -bash: echo: write error: No such device After patching, the device removal will succeed. Thanks for the comments of Paul, Zefan, and Vivek. Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <paul@paulmenage.org> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>		2011-09-21 10:22:10 +02:00
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blk-cgroup.c	blk-cgroup: be able to remove the record of unplugged device	2011-09-21 10:22:10 +02:00
blk-cgroup.h	cfq-iosched: Make IO merge related stats per cpu	2011-05-23 10:02:19 +02:00
blk-core.c	block: simplify force plug flush code a little bit	2011-08-24 16:04:34 +02:00
blk-exec.c	[SCSI] fix crash in scsi_dispatch_cmd()	2011-07-21 14:21:18 -07:00
blk-flush.c	block: fix flush machinery for stacking drivers with differring flush flags	2011-08-15 21:37:25 +02:00
blk-integrity.c	dm: improve block integrity support	2011-04-05 23:52:43 +02:00
blk-ioc.c	Merge branch 'for-linus' into for-3.1/core	2011-07-01 16:17:13 +02:00
blk-iopoll.c	tree-wide: fix assorted typos all over the place	2009-12-04 15:39:55 +01:00
blk-lib.c	block: fix patch import error in max_discard_sectors check	2011-07-23 20:34:59 +02:00
blk-map.c	block: check for proper length of iov entries earlier in blk_rq_map_user_iov()	2010-11-29 10:04:50 +01:00
blk-merge.c	block: attempt to merge with existing requests on plug flush	2011-03-21 10:14:27 +01:00
blk-settings.c	block: Fix discard topology stacking and reporting	2011-05-18 10:37:35 +02:00
blk-softirq.c	block: Don't check QUEUE_FLAG_SAME_COMP in __blk_complete_request	2011-09-14 09:31:01 +02:00
blk-sysfs.c	block: Fix queue_flag update when rq_affinity goes from 2 to 1	2011-08-24 08:51:34 +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	blk-throttle: correctly determine sync bio	2011-08-01 10:31:06 +02:00
blk-timeout.c	fault-injection: add ability to export fault_attr in arbitrary directory	2011-08-03 14:25:20 -10:00
blk.h	block: fix flush machinery for stacking drivers with differring flush flags	2011-08-15 21:37:25 +02:00
bsg-lib.c	bsg-lib: add module.h include	2011-08-02 10:43:35 +02:00
bsg.c	bsg: fix address space warning from sparse	2011-06-20 13:27:45 +02:00
cfq-iosched.c	block: separate priority boosting from REQ_META	2011-08-23 14:50:29 +02:00
cfq.h	blk-cgroup: Add unaccounted time to timeslice_used.	2011-03-12 16:54:00 +01:00
compat_ioctl.c	compat_ioctl: fix warning caused by qemu	2011-07-01 22:32:26 +02:00
deadline-iosched.c	iosched: prevent aliased requests from starving other I/O	2011-06-02 21:19:05 +02:00
elevator.c	iosched: prevent aliased requests from starving other I/O	2011-06-02 21:19:05 +02:00
genhd.c	block/genhd.c: remove useless cast in diskstats_show()	2011-08-02 12:43:50 +02:00
ioctl.c	block: fix refcounting in BLKBSZSET	2011-02-24 08:54:21 -08:00
Kconfig	block: add bsg helper library	2011-07-31 22:05:09 +02:00
Kconfig.iosched	blk-cgroup: config options re-arrangement	2010-04-26 19:27:56 +02:00
Makefile	block: add bsg helper library	2011-07-31 22:05:09 +02:00
noop-iosched.c	block: remove per-queue plugging	2011-03-10 08:52:07 +01:00
scsi_ioctl.c	block: take care not to overflow when calculating total iov length	2010-11-10 14:40:42 +01:00