diff options
| author | Paul Fulghum <paulkf@microgate.com> | 2006-06-28 04:26:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-06-28 14:59:05 -0700 |
| commit | 33b37a33c242542fac2980b8ccd90977388b7a8d (patch) | |
| tree | e3a18605e57e1d1268dd04e9a3e5276f7f0488fe /include/linux/kbd_kern.h | |
| parent | 2c3bb20f46709a0adfa7ea408013edbcab945d5a (diff) | |
| download | lwn-33b37a33c242542fac2980b8ccd90977388b7a8d.tar.gz lwn-33b37a33c242542fac2980b8ccd90977388b7a8d.zip | |
[PATCH] remove active field from tty buffer structure
Remove 'active' field from tty buffer structure. This was added in 2.6.16
as part of a patch to make the new tty buffering SMP safe. This field is
unnecessary with the more intelligently written flush_to_ldisc that adds
receive_room handling.
Removing this field reverts to simpler logic where the tail buffer is
always the 'active' buffer, which should not be freed by flush_to_ldisc.
(active == buffer being filled with new data)
The result is simpler, smaller, and faster tty buffer code.
Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/kbd_kern.h')
| -rw-r--r-- | include/linux/kbd_kern.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/include/linux/kbd_kern.h b/include/linux/kbd_kern.h index 4eb851ece080..efe0ee4cc80b 100644 --- a/include/linux/kbd_kern.h +++ b/include/linux/kbd_kern.h @@ -155,10 +155,8 @@ static inline void con_schedule_flip(struct tty_struct *t) { unsigned long flags; spin_lock_irqsave(&t->buf.lock, flags); - if (t->buf.tail != NULL) { - t->buf.tail->active = 0; + if (t->buf.tail != NULL) t->buf.tail->commit = t->buf.tail->used; - } spin_unlock_irqrestore(&t->buf.lock, flags); schedule_work(&t->buf.work); } |