On Fri, Feb 14, 2014 at 04:57:27PM +0800, Li Zefan wrote: > Currently kernfs_node_from_dentry() returns NULL for root dentry, > because root_dentry->d_op == NULL. > > Due to this bug cgroupstats_build() returns -EINVAL for root cgroup. > > # mount -t cgroup -o cpuacct /cgroup > # Documentation/accounting/getdelays -C /cgroup > fatal reply error, errno -22 > > With this fix: > > # Documentation/accounting/getdelays -C /cgroup > sleeping 305, blocked 0, running 1, stopped 0, uninterruptible 1 > > Signed-off-by: Li Zefan <lizefan@xxxxxxxxxx> Acked-by: Tejun Heo <tj@xxxxxxxxxx> Thanks! -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html