diff options
| author | Tejun Heo <tj@kernel.org> | 2013-01-09 08:05:12 -0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-01-09 08:05:12 -0800 |
| commit | f427d909648aa592c9588d0f66b5b457752a0cd1 (patch) | |
| tree | d6f91a6d46a1302f0cca6137851f0806364b7965 /block/cfq-iosched.c | |
| parent | b276a876a014c5fa58a16f247c0933f6c42112e3 (diff) | |
blkcg: implement blkcg_policy->on/offline_pd_fn() and blkcg_gq->online
Add two blkcg_policy methods, ->online_pd_fn() and ->offline_pd_fn(),
which are invoked as the policy_data gets activated and deactivated
while holding both blkcg and q locks.
Also, add blkcg_gq->online bool, which is set and cleared as the
blkcg_gq gets activated and deactivated. This flag also is toggled
while holding both blkcg and q locks.
These will be used to implement hierarchical stats.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Diffstat (limited to 'block/cfq-iosched.c')
0 files changed, 0 insertions, 0 deletions