[PATCH] do_tty_hangup: use group_send_sig_info not send_group_sig_info

We already have the tasklist_lock so there is no need for us to reacquire it
with send_group_sig_info.  reader/writer locks allow multiple readers and thus
recursion so the old code was ok just wastful.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 811dadb..bd73242 100644 (file)
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -1094,8 +1094,8 @@ static void do_tty_hangup(void *data)
                                p->signal->tty = NULL;
                        if (!p->signal->leader)
                                continue;
-                       send_group_sig_info(SIGHUP, SEND_SIG_PRIV, p);
-                       send_group_sig_info(SIGCONT, SEND_SIG_PRIV, p);
+                       group_send_sig_info(SIGHUP, SEND_SIG_PRIV, p);
+                       group_send_sig_info(SIGCONT, SEND_SIG_PRIV, p);
                        if (tty->pgrp > 0)
                                p->signal->tty_old_pgrp = tty->pgrp;
                } while_each_task_pid(tty->session, PIDTYPE_SID, p);