summaryrefslogtreecommitdiff
path: root/include/linux/cgroup.h
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2013-08-26 18:40:56 -0400
committerTejun Heo <tj@kernel.org>2013-08-26 18:40:56 -0400
commit35cf083619da5677f83e9a8eae813f0b413d7082 (patch)
tree509ea1ae09644bc82040ec919fa94c928e98db27 /include/linux/cgroup.h
parent6e6eab0efdf48fb2d8d7aee904d7740acb4661c6 (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.h3
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 */