Commit 8187926b authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Ingo Molnar

posix-timers: simplify de_thread()->exit_itimers() path

Impact: simplify code

de_thread() postpones release_task(leader) until after exit_itimers().
This was needed because !SIGEV_THREAD_ID timers could use ->group_leader
without get_task_struct(). With the recent changes we can release the
leader earlier and simplify the code.
Signed-off-by: default avatarOleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 89992102
......@@ -772,7 +772,6 @@ static int de_thread(struct task_struct *tsk)
struct signal_struct *sig = tsk->signal;
struct sighand_struct *oldsighand = tsk->sighand;
spinlock_t *lock = &oldsighand->siglock;
struct task_struct *leader = NULL;
int count;
if (thread_group_empty(tsk))
......@@ -810,7 +809,7 @@ static int de_thread(struct task_struct *tsk)
* and to assume its PID:
*/
if (!thread_group_leader(tsk)) {
leader = tsk->group_leader;
struct task_struct *leader = tsk->group_leader;
sig->notify_count = -1; /* for exit_notify() */
for (;;) {
......@@ -862,8 +861,9 @@ static int de_thread(struct task_struct *tsk)
BUG_ON(leader->exit_state != EXIT_ZOMBIE);
leader->exit_state = EXIT_DEAD;
write_unlock_irq(&tasklist_lock);
release_task(leader);
}
sig->group_exit_task = NULL;
......@@ -872,8 +872,6 @@ static int de_thread(struct task_struct *tsk)
no_thread_group:
exit_itimers(sig);
flush_itimer_signals();
if (leader)
release_task(leader);
if (atomic_read(&oldsighand->count) != 1) {
struct sighand_struct *newsighand;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment