The patch titled signals: send_sigqueue: don't take rcu lock has been removed from the -mm tree. Its filename was signals-send_sigqueue-dont-take-rcu-lock.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: signals: send_sigqueue: don't take rcu lock From: Oleg Nesterov <oleg@xxxxxxxxxx> lock_task_sighand() was changed, send_sigqueue() doesn't need rcu_read_lock() any longer. Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx> Cc: Roland McGrath <roland@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/signal.c | 4 ---- 1 file changed, 4 deletions(-) diff -puN kernel/signal.c~signals-send_sigqueue-dont-take-rcu-lock kernel/signal.c --- a/kernel/signal.c~signals-send_sigqueue-dont-take-rcu-lock +++ a/kernel/signal.c @@ -1311,8 +1311,6 @@ int send_sigqueue(int sig, struct sigque * We return -1, when the task is marked exiting, so * posix_timer_event can redirect it to the group leader */ - rcu_read_lock(); - if (!likely(lock_task_sighand(p, &flags))) goto out_err; @@ -1323,8 +1321,6 @@ int send_sigqueue(int sig, struct sigque unlock_task_sighand(p, &flags); out_err: - rcu_read_unlock(); - return ret; } _ Patches currently in -mm which might be from oleg@xxxxxxxxxx are origin.patch posix-timers-bug-10460-discard-the-pending-signal-when-the-timer-is-destroyed.patch workqueue-remove-redundant-function-invocation.patch put_pid-make-sure-we-dont-free-the-live-pid.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