coredump: change zap_threads() and zap_process() to use for_each_thread()
Change zap_threads() paths to use for_each_thread() rather than
while_each_thread().
While at it, change zap_threads() to avoid the nested if's to make the
code more readable and lessen the indentation.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Kyle Walker <kwalker@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Stanislav Kozina <skozina@redhat.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/coredump.c b/fs/coredump.c
index c66bb05..1777331 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -290,15 +290,14 @@
start->signal->group_exit_code = exit_code;
start->signal->group_stop_count = 0;
- t = start;
- do {
+ for_each_thread(start, t) {
task_clear_jobctl_pending(t, JOBCTL_PENDING_MASK);
if (t != current && t->mm) {
sigaddset(&t->pending.signal, SIGKILL);
signal_wake_up(t, 1);
nr++;
}
- } while_each_thread(start, t);
+ }
return nr;
}
@@ -360,18 +359,18 @@
continue;
if (g->flags & PF_KTHREAD)
continue;
- p = g;
- do {
- if (p->mm) {
- if (unlikely(p->mm == mm)) {
- lock_task_sighand(p, &flags);
- nr += zap_process(p, exit_code,
- SIGNAL_GROUP_EXIT);
- unlock_task_sighand(p, &flags);
- }
- break;
+
+ for_each_thread(g, p) {
+ if (unlikely(!p->mm))
+ continue;
+ if (unlikely(p->mm == mm)) {
+ lock_task_sighand(p, &flags);
+ nr += zap_process(p, exit_code,
+ SIGNAL_GROUP_EXIT);
+ unlock_task_sighand(p, &flags);
}
- } while_each_thread(g, p);
+ break;
+ }
}
rcu_read_unlock();
done: