cgroup: don't use idr_remove_all()

idr_destroy() can destroy idr by itself and idr_remove_all() is being
deprecated.  Drop its usage.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 3 deletions

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index fb2fb11fbb25..888fba457bb3 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4618,10 +4618,8 @@ void cgroup_unload_subsys(struct cgroup_subsys *ss)
         offline_css(ss, dummytop);
         ss->active = 0;
 
-        if (ss->use_id) {
-                idr_remove_all(&ss->idr);
+        if (ss->use_id)
                 idr_destroy(&ss->idr);
-        }
 
         /* deassign the subsys_id */
         subsys[ss->subsys_id] = NULL;