Vivek Goyal f469a7b4d5 blk-cgroup: Allow sleeping while dynamically allocating a group ...

Currently, all the cfq_group or throtl_group allocations happen while
we are holding ->queue_lock and sleeping is not allowed.

Soon, we will move to per cpu stats and also need to allocate the
per group stats. As one can not call alloc_percpu() from atomic
context as it can sleep, we need to drop ->queue_lock, allocate the
group, retake the lock and continue processing.

In throttling code, I check the queue DEAD flag again to make sure
that driver did not call blk_cleanup_queue() in the mean time.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

2011-05-20 20:34:52 +02:00

..

blk-cgroup.c

blk-cgroup: move some fields of unaccounted_time file under right config option

2011-05-20 20:34:52 +02:00

blk-cgroup.h

blk-cgroup: move some fields of unaccounted_time file under right config option

2011-05-20 20:34:52 +02:00

blk-core.c

blk-cgroup: Allow sleeping while dynamically allocating a group

2011-05-20 20:34:52 +02:00

blk-exec.c

block: Remove 'plug/unplug' comment in blk_execute_rq_nowait

2011-05-05 15:10:05 -06:00

blk-flush.c

block: hold queue if flush is running for non-queueable flush drive

2011-05-06 11:36:25 -06:00

blk-integrity.c

dm: improve block integrity support

2011-04-05 23:52:43 +02:00

blk-ioc.c

block: Clean up exit_io_context() source code.

2010-12-21 15:07:45 +01:00

blk-iopoll.c

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

blk-lib.c

blkdev: Do not return -EOPNOTSUPP if discard is supported

2011-05-06 19:30:01 -06:00

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

generic-ipi: remove CSD_FLAG_WAIT

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

blk-sysfs.c

Merge commit 'v2.6.39' into for-2.6.40/core

2011-05-20 20:33:15 +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-cgroup: Allow sleeping while dynamically allocating a group

2011-05-20 20:34:52 +02:00

blk-timeout.c

block: ensure jiffies wrap is handled correctly in blk_rq_timed_out_timer

2010-04-21 17:42:08 +02:00

blk.h

Merge commit 'v2.6.39' into for-2.6.40/core

2011-05-20 20:33:15 +02:00

bsg.c

[SCSI] bsg: correct fault if queue object removed while dev_t open

2010-12-09 09:41:14 -06:00

cfq-iosched.c

blk-cgroup: Allow sleeping while dynamically allocating a group

2011-05-20 20:34:52 +02:00

cfq.h

blk-cgroup: Add unaccounted time to timeslice_used.

2011-03-12 16:54:00 +01:00

compat_ioctl.c

BKL: remove extraneous #include <smp_lock.h>

2010-11-17 08:59:32 -08:00

deadline-iosched.c

block: remove per-queue plugging

2011-03-10 08:52:07 +01:00

elevator.c

Merge commit 'v2.6.39' into for-2.6.40/core

2011-05-20 20:33:15 +02:00

genhd.c

block: don't propagate unlisted DISK_EVENTs to userland

2011-04-21 19:43:58 +02:00

ioctl.c

block: fix refcounting in BLKBSZSET

2011-02-24 08:54:21 -08:00

Kconfig

kconfig: rename CONFIG_EMBEDDED to CONFIG_EXPERT

2011-01-20 17:02:05 -08:00

Kconfig.iosched

blk-cgroup: config options re-arrangement

2010-04-26 19:27:56 +02:00

Makefile

Merge branch 'for-2.6.37/barrier' of git://git.kernel.dk/linux-2.6-block

2010-10-22 17:07:18 -07:00

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