path: root/include/linux/blkdev.h
diff options
authorTejun Heo <tj@kernel.org>2012-03-05 13:15:13 -0800
committerJens Axboe <axboe@kernel.dk>2012-03-06 21:27:23 +0100
commit923adde1be1df57cebd80c563058e503376645e8 (patch)
tree7009edf644abdf6b91daaab3967ffa6a8b30633a /include/linux/blkdev.h
parent5efd611351d1a847c72d74fb12ff4bd187c0cb2c (diff)
blkcg: clear all request_queues on blkcg policy [un]registrations
Keep track of all request_queues which have blkcg initialized and turn on bypass and invoke blkcg_clear_queue() on all before making changes to blkcg policies. This is to prepare for moving blkg management into blkcg core. Note that this uses more brute force than necessary. Finer grained shoot down will be implemented later and given that policy [un]registration almost never happens on running systems (blk-throtl can't be built as a module and cfq usually is the builtin default iosched), this shouldn't be a problem for the time being. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blkdev.h')
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 315db1d91bc..e8c0bbd06b9 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -397,6 +397,9 @@ struct request_queue {
struct bsg_class_device bsg_dev;
+ struct list_head all_q_node;
/* Throttle data */
struct throtl_data *td;