.B CLONE_THREAD
more readable, the term "thread" is used to refer to the
processes within a thread group.
-.\" For a while there was CLONE_DETACHED (introduced in 2.5.32):
-.\" parent wants no child-exit signal. In 2.6.2 the need to give this
-.\" together with CLONE_THREAD disappeared.
Thread groups were a feature added in Linux 2.4 to support the
POSIX threads notion of a set of threads that share a single PID.
.B CLONE_PARENT
flag (as in kernel 2.6).
+For a while there was
+.B CLONE_DETACHED
+(introduced in 2.5.32):
+parent wants no child-exit signal.
+In 2.6.2 the need to give this
+together with
+.B CLONE_THREAD
+disappeared.
+This flag is still defined, but has no effect.
+
On x86,
.BR clone ()
should not be called through vsyscall, but directly through