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
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