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authorEric W. Biederman <ebiederm@xmission.com>2007-02-12 00:53:00 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 09:48:32 -0800
commitab521dc0f8e117fd808d3e425216864d60390500 (patch)
treef9d6449c4d8c9508fd43edfe845108043e1536b2 /drivers/char/ip2
parent3e7cd6c413c9e6fbb5e1ee2acdadb4ababd2d474 (diff)
downloadop-kernel-dev-ab521dc0f8e117fd808d3e425216864d60390500.zip
op-kernel-dev-ab521dc0f8e117fd808d3e425216864d60390500.tar.gz
[PATCH] tty: update the tty layer to work with struct pid
Of kernel subsystems that work with pids the tty layer is probably the largest consumer. But it has the nice virtue that the assiation with a session only lasts until the session leader exits. Which means that no reference counting is required. So using struct pid winds up being a simple optimization to avoid hash table lookups. In the long term the use of pid_nr also ensures that when we have multiple pid spaces mixed everything will work correctly. Signed-off-by: Eric W. Biederman <eric@maxwell.lnxi.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/ip2')
-rw-r--r--drivers/char/ip2/ip2main.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/ip2/ip2main.c b/drivers/char/ip2/ip2main.c
index 7c70310..83c7258 100644
--- a/drivers/char/ip2/ip2main.c
+++ b/drivers/char/ip2/ip2main.c
@@ -1271,8 +1271,8 @@ static void do_input(struct work_struct *work)
// code duplicated from n_tty (ldisc)
static inline void isig(int sig, struct tty_struct *tty, int flush)
{
- if (tty->pgrp > 0)
- kill_pg(tty->pgrp, sig, 1);
+ if (tty->pgrp)
+ kill_pgrp(tty->pgrp, sig, 1);
if (flush || !L_NOFLSH(tty)) {
if ( tty->ldisc.flush_buffer )
tty->ldisc.flush_buffer(tty);
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