cgroup,rcu: convert call_rcu(free_cgroup_rcu) to kfree_rcu() (f2da1c40) · Commits · 戴 / test

The rcu callback free_cgroup_rcu() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(free_cgroup_rcu). Signed-off-by:

kernel/cgroup.c

+1 −8

Original line number	Diff line number	Diff line
		@@ -806,13 +806,6 @@ static int cgroup_call_pre_destroy(struct cgroup *cgrp)
		return ret;
		}

		static void free_cgroup_rcu(struct rcu_head *obj)
		{
		struct cgroup *cgrp = container_of(obj, struct cgroup, rcu_head);

		kfree(cgrp);
		}

		static void cgroup_diput(struct dentry dentry, struct inode inode)
		{
		/* is dentry a directory ? if so, kfree() associated cgroup */
		@@ -850,7 +843,7 @@ static void cgroup_diput(struct dentry dentry, struct inode inode)
		*/
		BUG_ON(!list_empty(&cgrp->pidlists));

		call_rcu(&cgrp->rcu_head, free_cgroup_rcu);
		kfree_rcu(cgrp, rcu_head);
		}
		iput(inode);
		}