diff options
author | Tejun Heo <tj@kernel.org> | 2013-01-09 11:05:12 -0500 |
---|---|---|
committer | Tejun Heo <tj@kernel.org> | 2013-01-09 11:05:12 -0500 |
commit | b276a876a014c5fa58a16f247c0933f6c42112e3 (patch) | |
tree | c49f85e03d11296683ed938864bd823cdeaa614f /block/blk-cgroup.c | |
parent | d02f7aa8dce8166dbbc515ce393912aa45e6b8a6 (diff) |
blkcg: add blkg_policy_data->plid
Add pd->plid so that the policy a pd belongs to can be identified
easily. This will be used to implement hierarchical blkg_[rw]stats.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Diffstat (limited to 'block/blk-cgroup.c')
-rw-r--r-- | block/blk-cgroup.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 10e1df9da46e..3a8de321d1f6 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c | |||
@@ -113,6 +113,7 @@ static struct blkcg_gq *blkg_alloc(struct blkcg *blkcg, struct request_queue *q, | |||
113 | 113 | ||
114 | blkg->pd[i] = pd; | 114 | blkg->pd[i] = pd; |
115 | pd->blkg = blkg; | 115 | pd->blkg = blkg; |
116 | pd->plid = i; | ||
116 | 117 | ||
117 | /* invoke per-policy init */ | 118 | /* invoke per-policy init */ |
118 | if (pol->pd_init_fn) | 119 | if (pol->pd_init_fn) |
@@ -908,6 +909,7 @@ int blkcg_activate_policy(struct request_queue *q, | |||
908 | 909 | ||
909 | blkg->pd[pol->plid] = pd; | 910 | blkg->pd[pol->plid] = pd; |
910 | pd->blkg = blkg; | 911 | pd->blkg = blkg; |
912 | pd->plid = pol->plid; | ||
911 | pol->pd_init_fn(blkg); | 913 | pol->pd_init_fn(blkg); |
912 | 914 | ||
913 | spin_unlock(&blkg->blkcg->lock); | 915 | spin_unlock(&blkg->blkcg->lock); |