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authorVivek Goyal <vgoyal@redhat.com>2009-12-03 12:59:47 -0500
committerJens Axboe <jens.axboe@oracle.com>2009-12-03 19:28:52 +0100
commitb1c3576961847da26c91b1e97f226bb66be5fa3f (patch)
treee228525220031232463f9cbbe017bad67807e6d4 /block/blk-cgroup.h
parent25fb5169d4c9d4255107abbb7c08ab712434efc8 (diff)
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blkio: Take care of cgroup deletion and cfq group reference counting
o One can choose to change elevator or delete a cgroup. Implement group reference counting so that both elevator exit and cgroup deletion can take place gracefully. Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Nauman Rafique <nauman@google.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block/blk-cgroup.h')
-rw-r--r--block/blk-cgroup.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index ba5703f69b4..cd50a2f8733 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -26,6 +26,7 @@ struct blkio_group {
/* An rcu protected unique identifier for the group */
void *key;
struct hlist_node blkcg_node;
+ unsigned short blkcg_id;
};
#define BLKIO_WEIGHT_MIN 100