• Tejun Heo's avatar
    cgroup: rename cgroup_css_from_dir() to css_from_dir() and update its syntax · 35cf0836
    Tejun Heo authored
    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: default avatarTejun Heo <tj@kernel.org>
    Acked-by: default avatarLi Zefan <lizefan@huawei.com>
    Acked-by: default avatarKirill 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>
    35cf0836
cgroup.c 158 KB