block: RCU free request_queue
authorTejun Heo <tj@kernel.org>
Wed, 9 Jan 2013 16:05:13 +0000 (08:05 -0800)
committerTejun Heo <tj@kernel.org>
Wed, 9 Jan 2013 16:05:13 +0000 (08:05 -0800)
commit548bc8e1b38e48653a90f48f636f8d253504f8a2
treedb4aca3e40185423e465ef5a67f44658ff292443
parent16b3de6652c7aef151f38726faf90f0dbc9e9c71
block: RCU free request_queue

RCU free request_queue so that blkcg_gq->q can be dereferenced under
RCU lock.  This will be used to implement hierarchical stats.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
block/blk-sysfs.c
include/linux/blkdev.h