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| author | Tejun Heo <tj@kernel.org> | 2012-03-05 13:15:13 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2012-03-06 21:27:23 +0100 |
| commit | 923adde1be1df57cebd80c563058e503376645e8 (patch) | |
| tree | 7009edf644abdf6b91daaab3967ffa6a8b30633a /include/linux | |
| parent | 5efd611351d1a847c72d74fb12ff4bd187c0cb2c (diff) | |
| download | op-kernel-dev-923adde1be1df57cebd80c563058e503376645e8.zip op-kernel-dev-923adde1be1df57cebd80c563058e503376645e8.tar.gz | |
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')
| -rw-r--r-- | include/linux/blkdev.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 315db1d..e8c0bbd 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -397,6 +397,9 @@ struct request_queue { struct bsg_class_device bsg_dev; #endif +#ifdef CONFIG_BLK_CGROUP + struct list_head all_q_node; +#endif #ifdef CONFIG_BLK_DEV_THROTTLING /* Throttle data */ struct throtl_data *td; |
