wait: allow sys_waitid() to accept __WNOTHREAD/__WCLONE/__WALL

I see no reason why waitid() can't support other linux-specific flags
allowed in sys_wait4().

In particular this change can help if we reconsider the previous change
("wait/ptrace: assume __WALL if the child is traced") which adds the
"automagical" __WALL for debugger.

Signed-off-by: Oleg Nesterov <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Denys Vlasenko <[email protected]>
Cc: Jan Kratochvil <[email protected]>
Cc: "Michael Kerrisk (man-pages)" <[email protected]>
Cc: Pedro Alves <[email protected]>
Cc: Roland McGrath <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions