tree 04a423dc46215a19472d5e52eec8395947756859
parent eea8f41cc58849e354ecf8b95bd7f806e1d1f703
author Tejun Heo <tj@kernel.org> 1432329198 -0400
committer Jens Axboe <axboe@fb.com> 1433255613 -0600

update !CONFIG_BLK_CGROUP dummies in include/linux/blk-cgroup.h

The header file will be used more widely with the pending cgroup
writeback support and the current set of dummy declarations aren't
enough to handle different config combinations.  Update as follows.

* Drop the struct cgroup declaration.  None of the dummy defs need it.

* Define blkcg as an empty struct instead of just declaring it.

* Wrap dummy function defs in CONFIG_BLOCK.  Some functions use block
  data types and none of them are to be used w/o block enabled.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>