proc_pid_ns
struct pid_namespace *proc_pidns = proc_pid_ns(file_inode(f->file)->i_sb);
struct pid_namespace *proc_pidns = proc_pid_ns(file_inode(f->file)->i_sb);
ns = proc_pid_ns(file_inode(m->file)->i_sb);
seq_printf(seq, "%d ", pid_nr_ns(v, proc_pid_ns(inode->i_sb)));
struct pid_namespace *ns = proc_pid_ns(inode->i_sb);
tp->ns = proc_pid_ns(inode->i_sb);
struct pid_namespace *pid_ns = proc_pid_ns(file_inode(file)->i_sb);
ns = proc_pid_ns(inode->i_sb);
struct pid_namespace *ns = proc_pid_ns(inode->i_sb);
struct pid_namespace *ns = proc_pid_ns(inode->i_sb);
struct pid_namespace *ns = proc_pid_ns(inode->i_sb);
proc_pid_ns(file_inode(m->file)->i_sb));
state->pid_ns = proc_pid_ns(file_inode(seq->file)->i_sb);
struct pid_namespace *proc_pidns = proc_pid_ns(sb);