cgroup: separate out put_css_set_locked() and remove put_css_set_taskexit()
put_css_set() is performed in two steps - it first tries to put
without grabbing css_set_rwsem if such put wouldn't make the count
zero. If that fails, it puts after write-locking css_set_rwsem. This
patch separates out the second phase into put_css_set_locked() which
should be called with css_set_rwsem locked.
Also, put_css_set_taskexit() is droped and put_css_set() is made to
take @taskexit. There are only a handful users of these functions.
No point in providing different variants.
put_css_locked() will be used by later changes. This patch doesn't
introduce any functional changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
1 file changed