The patch titled posix-timers: always do get_task_struct(timer->it_process) has been removed from the -mm tree. Its filename was posix-timers-always-do-get_task_structtimer-it_process.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: posix-timers: always do get_task_struct(timer->it_process) From: Oleg Nesterov <oleg@xxxxxxxxxx> Change the code to get/put timer->it_process regardless of SIGEV_THREAD_ID. This streamlines the create/destroy paths and allows us to simplify the usage of exit_itimers() in de_thread(). Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Roland McGrath <roland@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/posix-timers.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff -puN kernel/posix-timers.c~posix-timers-always-do-get_task_structtimer-it_process kernel/posix-timers.c --- a/kernel/posix-timers.c~posix-timers-always-do-get_task_structtimer-it_process +++ a/kernel/posix-timers.c @@ -555,11 +555,10 @@ sys_timer_create(const clockid_t which_c */ spin_lock_irqsave(&process->sighand->siglock, flags); if (!(process->flags & PF_EXITING)) { + get_task_struct(process); new_timer->it_process = process; list_add(&new_timer->list, &process->signal->posix_timers); - if (new_timer->it_sigev_notify == (SIGEV_SIGNAL|SIGEV_THREAD_ID)) - get_task_struct(process); spin_unlock_irqrestore(&process->sighand->siglock, flags); } else { spin_unlock_irqrestore(&process->sighand->siglock, flags); @@ -576,6 +575,7 @@ sys_timer_create(const clockid_t which_c new_timer->it_sigev_signo = SIGALRM; new_timer->it_sigev_value.sival_int = new_timer->it_id; process = current->group_leader; + get_task_struct(process); spin_lock_irqsave(&process->sighand->siglock, flags); new_timer->it_process = process; list_add(&new_timer->list, &process->signal->posix_timers); @@ -866,8 +866,7 @@ retry_delete: * This keeps any tasks waiting on the spin lock from thinking * they got something (see the lock code above). */ - if (timer->it_sigev_notify == (SIGEV_SIGNAL|SIGEV_THREAD_ID)) - put_task_struct(timer->it_process); + put_task_struct(timer->it_process); timer->it_process = NULL; unlock_timer(timer, flags); @@ -894,8 +893,7 @@ retry_delete: * This keeps any tasks waiting on the spin lock from thinking * they got something (see the lock code above). */ - if (timer->it_sigev_notify == (SIGEV_SIGNAL|SIGEV_THREAD_ID)) - put_task_struct(timer->it_process); + put_task_struct(timer->it_process); timer->it_process = NULL; unlock_timer(timer, flags); _ Patches currently in -mm which might be from oleg@xxxxxxxxxx are git-tip.patch posix-timers-use-struct-pid-instead-of-struct-task_struct.patch posix-timers-check-it_signal-instead-of-it_pid-to-validate-the-timer.patch posix-timers-simplify-de_thread-exit_itimers-path.patch signal-procfs-lock_task_sighand-do-not-need-rcu_read_lock.patch make-ptrace_untrace-static.patch coredump-format_corename-dont-append-%pid-if-multi-threaded.patch add-config_core_dump_default_elf_headers.patch kthread_bind-use-wait_task_inactivetask_uninterruptible.patch pid_ns-de_thread-kill-the-now-unneeded-child_reaper-change.patch pid_ns-kill-the-now-unused-task_child_reaper.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html