blkcg: add blkcg->id
authorTejun Heo <tj@kernel.org>
Mon, 19 Mar 2012 22:10:56 +0000 (15:10 -0700)
committerJens Axboe <axboe@kernel.dk>
Tue, 20 Mar 2012 11:47:47 +0000 (12:47 +0100)
commit9a9e8a26da4c2c5ddc60999bdea957935fb22b6b
tree5a42ef29c2c34174390e4ccf9a2924c0ade6f340
parentedf1b879e308d37b5b7c414476ab39f79650a253
blkcg: add blkcg->id

Add 64bit unique id to blkcg.  This will be used by policies which
want blkcg identity test to tell whether the associated blkcg has
changed.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
block/blk-cgroup.c
block/blk-cgroup.h