• Oleg Nesterov's avatar
    proc/maps: make vm_is_stack() logic namespace-friendly · 58cb6548
    Oleg Nesterov authored
    
    
    - Rename vm_is_stack() to task_of_stack() and change it to return
      "struct task_struct *" rather than the global (and thus wrong in
      general) pid_t.
    
    - Add the new pid_of_stack() helper which calls task_of_stack() and
      uses the right namespace to report the correct pid_t.
    
      Unfortunately we need to define this helper twice, in task_mmu.c
      and in task_nommu.c. perhaps it makes sense to add fs/proc/util.c
      and move at least pid_of_stack/task_of_stack there to avoid the
      code duplication.
    
    - Change show_map_vma() and show_numa_map() to use the new helper.
    
    Signed-off-by: default avatarOleg Nesterov <oleg@redhat.com>
    Cc: Alexander Viro <viro@zeniv.linux.org.uk>
    Cc: Cyrill Gorcunov <gorcunov@openvz.org>
    Cc: "Eric W. Biederman" <ebiederm@xmission.com>
    Cc: Greg Ungerer <gerg@uclinux.org>
    Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    58cb6548