tree ae2d4de96aabbafd3792316d14f40330ec64572d
parent 3a515e4a62dbf7e4c213740268a5267faa69e5b2
author Oleg Nesterov <oleg@tv-sign.ru> 1202473147 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202491347 -0800

wait_task_zombie: remove ->exit_state/exit_signal checks for WNOWAIT

The first "p->exit_state != EXIT_ZOMBIE" check doesn't make too much sense.
The exit_state was EXIT_ZOMBIE when the function was called, and another
thread can change it to EXIT_DEAD right after the check.

The second condition is not possible, detached non-traced threads were already
filtered out by eligible_child(), we didn't drop tasklist since then.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>