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tty_io: fasync BKL pushdown

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Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Jonathan Corbet 2008-06-19 16:04:53 -06:00
parent 9d31952257
commit 5d1e3230f4
1 changed files with 9 additions and 5 deletions
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14
drivers/char/tty_io.c
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@ -2909,15 +2909,16 @@ static int tty_fasync(int fd, struct file *filp, int on)
{
struct tty_struct *tty;
unsigned long flags;
int retval;
int retval = 0;
lock_kernel();
tty = (struct tty_struct *)filp->private_data;
if (tty_paranoia_check(tty, filp->f_path.dentry->d_inode, "tty_fasync"))
return 0;
goto out;
retval = fasync_helper(fd, filp, on, &tty->fasync);
if (retval <= 0)
return retval;
goto out;
if (on) {
enum pid_type type;
@ -2935,12 +2936,15 @@ static int tty_fasync(int fd, struct file *filp, int on)
spin_unlock_irqrestore(&tty->ctrl_lock, flags);
retval = __f_setown(filp, pid, type, 0);
if (retval)
return retval;
goto out;
} else {
if (!tty->fasync && !waitqueue_active(&tty->read_wait))
tty->minimum_to_wake = N_TTY_BUF_SIZE;
}
return 0;
retval = 0;
out:
unlock_kernel();
return retval;
}
/**