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authorTejun Heo <tj@kernel.org>2019-06-27 13:39:48 -0700
committerJens Axboe <axboe@kernel.dk>2019-07-10 09:00:57 -0600
commit9b0eb69b75bccada2d341d7e7ca342f0cb1c9a6a (patch)
treefe6f801bf144743a3f9ac9c336602f855d35ac45 /include/linux/cgroup.h
parentfd112c74652371a023f85d87b70bee7169e8f4d0 (diff)
cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
btrfs is going to use css_put() and wbc helpers to improve cgroup writeback support. Add dummy css_get() definition and export wbc helpers to prepare for module and !CONFIG_CGROUP builds. Reported-by: kbuild test robot <lkp@intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/cgroup.h')
-rw-r--r--include/linux/cgroup.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 3745ecdad925..852d885df10a 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -699,6 +699,7 @@ void cgroup_path_from_kernfs_id(const union kernfs_node_id *id,
struct cgroup_subsys_state;
struct cgroup;
+static inline void css_get(struct cgroup_subsys_state *css) {}
static inline void css_put(struct cgroup_subsys_state *css) {}
static inline int cgroup_attach_task_all(struct task_struct *from,
struct task_struct *t) { return 0; }