diff options
| author | Tejun Heo <tj@kernel.org> | 2013-08-26 18:40:56 -0400 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-08-26 18:40:56 -0400 |
| commit | 35cf083619da5677f83e9a8eae813f0b413d7082 (patch) | |
| tree | 509ea1ae09644bc82040ec919fa94c928e98db27 /include/linux/cgroup.h | |
| parent | 6e6eab0efdf48fb2d8d7aee904d7740acb4661c6 (diff) | |
cgroup: rename cgroup_css_from_dir() to css_from_dir() and update its syntax
cgroup_css_from_dir() will grow another user. In preparation, make
the following changes.
* All css functions are prefixed with just "css_", rename it to
css_from_dir().
* Take dentry * instead of file * as dentry is what ultimately
identifies a cgroup and file may not always be available. Note that
the function now checkes whether @dentry->d_inode is NULL as the
caller now may specify a negative dentry.
* Make it take cgroup_subsys * instead of integer subsys_id. This
simplifies the function and allows specifying no subsystem for
cgroup->dummy_css.
* Make return section a bit less verbose.
This patch doesn't introduce any behavior changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Diffstat (limited to 'include/linux/cgroup.h')
| -rw-r--r-- | include/linux/cgroup.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index b685955d4b29..21ba29869eb8 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -903,7 +903,8 @@ bool css_is_ancestor(struct cgroup_subsys_state *cg, /* Get id and depth of css */ unsigned short css_id(struct cgroup_subsys_state *css); -struct cgroup_subsys_state *cgroup_css_from_dir(struct file *f, int id); +struct cgroup_subsys_state *css_from_dir(struct dentry *dentry, + struct cgroup_subsys *ss); #else /* !CONFIG_CGROUPS */ |