From: Marco Cipullo <cipullo@libero.it>
To: linux-kernel@vger.kernel.org
Subject: In last setsid/tty locking changes...
Date: Fri, 7 Jan 2005 14:37:02 +0100 [thread overview]
Message-ID: <200501071437.02426.cipullo@libero.it> (raw)
In last setsid/tty locking changes:
diff -Nru a/kernel/exit.c b/kernel/exit.c
--- a/kernel/exit.c 2005-01-07 05:24:41 -08:00
+++ b/kernel/exit.c 2005-01-07 05:24:41 -08:00
@@ -332,7 +332,9 @@
exit_mm(current);
set_special_pids(1, 1);
+ down(&tty_sem);
current->signal->tty = NULL;
+ up(&tty_sem);
/* Block and flush all signals */
sigfillset(&blocked);
Sorry for the silly question, but why is needed a semaphore to write just one
value without read/write nothing else?
Bye
Marco
next reply other threads:[~2005-01-07 13:37 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-07 13:37 Marco Cipullo [this message]
2005-01-07 15:45 ` In last setsid/tty locking changes Alan Cox
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