+ signals-change-wait_for_helper-to-use-kernel_sigaction.patch added to -mm tree

[akpm@xxxxxxxxxxxxxxxxxxxx]

Subject: + signals-change-wait_for_helper-to-use-kernel_sigaction.patch added to -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
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 15 Apr 2014 12:28:58 -0700


The patch titled
     Subject: signals: change wait_for_helper() to use kernel_sigaction()
has been added to the -mm tree.  Its filename is
     signals-change-wait_for_helper-to-use-kernel_sigaction.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/signals-change-wait_for_helper-to-use-kernel_sigaction.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/signals-change-wait_for_helper-to-use-kernel_sigaction.patch

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/SubmitChecklist when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Subject: signals: change wait_for_helper() to use kernel_sigaction()

Now that we have kernel_sigaction() we can change wait_for_helper() to use
it and cleans up the code a bit.

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

diff -puN kernel/kmod.c~signals-change-wait_for_helper-to-use-kernel_sigaction kernel/kmod.c
--- a/kernel/kmod.c~signals-change-wait_for_helper-to-use-kernel_sigaction
+++ a/kernel/kmod.c
@@ -285,10 +285,7 @@ static int wait_for_helper(void *data)
 	pid_t pid;
 
 	/* If SIGCLD is ignored sys_wait4 won't populate the status. */
-	spin_lock_irq(&current->sighand->siglock);
-	current->sighand->action[SIGCHLD-1].sa.sa_handler = SIG_DFL;
-	spin_unlock_irq(&current->sighand->siglock);
-
+	kernel_sigaction(SIGCHLD, SIG_DFL);
 	pid = kernel_thread(____call_usermodehelper, sub_info, SIGCHLD);
 	if (pid < 0) {
 		sub_info->retval = pid;
_

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

signals-kill-sigfindinword.patch
signals-s-siginitset-sigemptyset-in-do_sigtimedwait.patch
signals-kill-rm_from_queue-change-prepare_signal-to-use-for_each_thread.patch
signals-rename-rm_from_queue_full-to-flush_sigqueue_mask.patch
signals-cleanup-the-usage-of-t-current-in-do_sigaction.patch
signals-mv-disallow_signal-from-schedh-exitc-to-signal.patch
signals-jffs2-fix-the-wrong-usage-of-disallow_signal.patch
signals-kill-the-obsolete-sigdelset-and-recalc_sigpending-in-allow_signal.patch
signals-disallow_signal-should-flush-the-potentially-pending-signal.patch
signals-introduce-kernel_sigaction.patch
signals-change-wait_for_helper-to-use-kernel_sigaction.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