lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 07 Feb 2013 15:50:35 +0100 From: Jiri Slaby <jslaby@...e.cz> To: Peter Hurley <peter@...leysoftware.com> CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Alan Cox <alan@...ux.intel.com>, Sasha Levin <levinsasha928@...il.com>, Sebastian Andrzej Siewior <bigeasy@...utronix.de>, linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, Ilya Zykov <ilya@...x.ru>, Dave Jones <davej@...hat.com> Subject: Re: [PATCH v3 01/23] tty: Add diagnostic for halted line discipline On 02/05/2013 09:20 PM, Peter Hurley wrote: > --- a/drivers/tty/tty_ldisc.c > +++ b/drivers/tty/tty_ldisc.c > @@ -375,6 +375,7 @@ static inline void tty_ldisc_put(struct tty_ldisc *ld) > > void tty_ldisc_enable(struct tty_struct *tty) > { > + clear_bit(TTY_LDISC_HALTED, &tty->flags); > set_bit(TTY_LDISC, &tty->flags); > clear_bit(TTY_LDISC_CHANGING, &tty->flags); > wake_up(&tty_ldisc_wait); > @@ -498,26 +499,6 @@ static void tty_ldisc_restore(struct tty_struct *tty, struct tty_ldisc *old) > } > > /** > - * tty_ldisc_halt - shut down the line discipline > - * @tty: tty device > - * > - * Shut down the line discipline and work queue for this tty device. > - * The TTY_LDISC flag being cleared ensures no further references can > - * be obtained while the delayed work queue halt ensures that no more > - * data is fed to the ldisc. > - * > - * You need to do a 'flush_scheduled_work()' (outside the ldisc_mutex) > - * in order to make sure any currently executing ldisc work is also > - * flushed. > - */ > - > -static int tty_ldisc_halt(struct tty_struct *tty) > -{ > - clear_bit(TTY_LDISC, &tty->flags); > - return cancel_work_sync(&tty->port->buf.work); > -} > - > -/** > * tty_ldisc_flush_works - flush all works of a tty > * @tty: tty device to flush works for > * > @@ -547,6 +528,29 @@ static int tty_ldisc_wait_idle(struct tty_struct *tty, long timeout) > } > > /** > + * tty_ldisc_halt - shut down the line discipline > + * @tty: tty device > + * > + * Shut down the line discipline and work queue for this tty device. > + * The TTY_LDISC flag being cleared ensures no further references can > + * be obtained while the delayed work queue halt ensures that no more > + * data is fed to the ldisc. > + * > + * You need to do a 'flush_scheduled_work()' (outside the ldisc_mutex) > + * in order to make sure any currently executing ldisc work is also > + * flushed. > + */ > + > +static int tty_ldisc_halt(struct tty_struct *tty) > +{ > + int scheduled; > + clear_bit(TTY_LDISC, &tty->flags); > + scheduled = cancel_work_sync(&tty->port->buf.work); > + set_bit(TTY_LDISC_HALTED, &tty->flags); > + return scheduled; > +} Why did you move with that function? It makes the patch unnecessarily bigger (and harder for a review). -- js suse labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists