tree 44dc1d6ae0ba66229a6b9e85ac22a3edc87a4b8d
parent 5c01ba49e6647d86bc7576105f82027200d1f303
author Oleg Nesterov <oleg@redhat.com> 1253746609 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1253802060 -0700

do_wait-wakeup-optimization: simplify task_pid_type()

task_pid_type() is only used by eligible_pid() which has to check wo_type
!= PIDTYPE_MAX anyway.  Remove this check from task_pid_type() and factor
out ->pids[type] access, this shrinks .text a bit and simplifies the code.

The matches the behaviour of other similar helpers, say get_task_pid().
The caller must ensure that pid_type is valid, not the callee.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Roland McGrath <roland@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>