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job control: rename signal->group_stop and flags to jobctl and update them

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signal->group_stop currently hosts mostly group stop related flags;
however, it's gonna be used for wider purposes and the GROUP_STOP_
flag prefix becomes confusing.  Rename signal->group_stop to
signal->jobctl and rename all GROUP_STOP_* flags to JOBCTL_*.

Bit position macros JOBCTL_*_BIT are defined and JOBCTL_* flags are
defined in terms of them to allow using bitops later.

While at it, reassign JOBCTL_TRAPPING to bit 22 to better accomodate
future additions.

This doesn't cause any functional change.

-v2: JOBCTL_*_BIT macros added as suggested by Linus.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
This commit is contained in:
Tejun Heo
2011-06-02 11:13:59 +02:00
committed by Oleg Nesterov
parent 0b1007c357
commit a8f072c1d6
4 changed files with 67 additions and 60 deletions
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2
fs/exec.c
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@@ -1772,7 +1772,7 @@ static int zap_process(struct task_struct *start, int exit_code)
t = start;
do {
task_clear_group_stop_pending(t);
task_clear_jobctl_stop_pending(t);
if (t != current && t->mm) {
sigaddset(&t->pending.signal, SIGKILL);
signal_wake_up(t, 1);