[merged] signals-kill-the-obsolete-sigdelset-and-recalc_sigpending-in-allow_signal.patch removed from -mm tree

[akpm@xxxxxxxxxxxxxxxxxxxx]

Subject: [merged] signals-kill-the-obsolete-sigdelset-and-recalc_sigpending-in-allow_signal.patch removed from -mm tree
To: oleg@xxxxxxxxxx,dwmw2@xxxxxxxxxxxxx,fweisbec@xxxxxxxxx,geert@xxxxxxxxxxxxxx,mathieu.desnoyers@xxxxxxxxxxxx,mingo@xxxxxxxxxx,peterz@xxxxxxxxxxxxx,richard@xxxxxx,rostedt@xxxxxxxxxxx,tj@xxxxxxxxxx,viro@xxxxxxxxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 09 Jun 2014 12:34:12 -0700


The patch titled
     Subject: signals: kill the obsolete sigdelset() and recalc_sigpending() in allow_signal()
has been removed from the -mm tree.  Its filename was
     signals-kill-the-obsolete-sigdelset-and-recalc_sigpending-in-allow_signal.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Subject: signals: kill the obsolete sigdelset() and recalc_sigpending() in allow_signal()

allow_signal() does sigdelset(current->blocked) due to historic reason,
previously it could be called by a daemonize()'ed kthread, and daemonize()
played with current->blocked.

Now that daemonize() has gone away we can remove sigdelset() and
recalc_sigpending().  If a user really wants to unblock a signal, it must
use sigprocmask() or set_current_block() explicitely.

Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 kernel/signal.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff -puN kernel/signal.c~signals-kill-the-obsolete-sigdelset-and-recalc_sigpending-in-allow_signal kernel/signal.c
--- a/kernel/signal.c~signals-kill-the-obsolete-sigdelset-and-recalc_sigpending-in-allow_signal
+++ a/kernel/signal.c
@@ -3072,16 +3072,13 @@ COMPAT_SYSCALL_DEFINE4(rt_tgsigqueueinfo
  */
 void allow_signal(int sig)
 {
-	spin_lock_irq(&current->sighand->siglock);
-	/* This is only needed for daemonize()'ed kthreads */
-	sigdelset(&current->blocked, sig);
 	/*
 	 * Kernel threads handle their own signals. Let the signal code
 	 * know it'll be handled, so that they don't get converted to
 	 * SIGKILL or just silently dropped.
 	 */
+	spin_lock_irq(&current->sighand->siglock);
 	current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2;
-	recalc_sigpending();
 	spin_unlock_irq(&current->sighand->siglock);
 }
 EXPORT_SYMBOL(allow_signal);
_

Patches currently in -mm which might be from oleg@xxxxxxxxxx are

origin.patch
cpu-hotplug-smp-flush-any-pending-ipi-callbacks-before-cpu-offline.patch
linux-next.patch
kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection.patch
kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix.patch
nmi-provide-the-option-to-issue-an-nmi-back-trace-to-every-cpu-but-current.patch
nmi-provide-the-option-to-issue-an-nmi-back-trace-to-every-cpu-but-current-fix.patch

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