[PATCH 0/3] More cleanups in do_wait() pathes

[Vitaly Mayatskikh <v.mayatskih@gmail.com>]

Further cleanups of do_wait() and friends. Thanks for all your
reviews of previous patches and ideas how to make it better. I'm currently
running kernel with these patches on my laptop for 1+ day, it is still able
to boot and live 5-10 hours w/o visible issues.

Next task is to optimize a bunch of put_user() in copy_wait_opts_to_user(),
but I'd like to use Ingo's idea with put_user_try/catch. Therefore, need to
implement generic stub for architectures which does not support try/catch yet.

Vitaly Mayatskikh (3):
  Introduce "struct wait_info" to simplify wait_task*() pathes
  Replace wait_noreap_copyout() by copy_wait_opts_to_user()
  Move more common code from wait_task_*() to copy_wait_opts_to_user()

 kernel/exit.c |  127 +++++++++++++++++++++++++++-----------------------------
 1 files changed, 61 insertions(+), 66 deletions(-)