WorkStruct: Separate delayable and non-delayable events.

Separate delayable work items from non-delayable work items be splitting them
into a separate structure (delayed_work), which incorporates a work_struct and
the timer_list removed from work_struct.

The work_struct struct is huge, and this limits it's usefulness.  On a 64-bit
architecture it's nearly 100 bytes in size.  This reduces that by half for the
non-delayable type of event.

Signed-Off-By: David Howells <dhowells@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index e90ea39c7c4b..7297acfe520c 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -3580,7 +3580,7 @@ static void initialize_tty_struct(struct tty_struct *tty)
         tty->overrun_time = jiffies;
         tty->buf.head = tty->buf.tail = NULL;
         tty_buffer_init(tty);
-        INIT_WORK(&tty->buf.work, flush_to_ldisc, tty);
+        INIT_DELAYED_WORK(&tty->buf.work, flush_to_ldisc, tty);
         init_MUTEX(&tty->buf.pty_sem);
         mutex_init(&tty->termios_mutex);
         init_waitqueue_head(&tty->write_wait);