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tty: Push the bkl down a bit in the hangup code

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We know that the redirect field is handled via its own locking in all
places

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Cox 2009-11-30 13:18:40 +00:00 committed by Greg Kroah-Hartman
parent f18f9498e9
commit 38c70b27f9
1 changed files with 2 additions and 2 deletions
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4
drivers/char/tty_io.c
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@ -505,8 +505,6 @@ static void do_tty_hangup(struct work_struct *work)
if (!tty)
return;
/* inuse_filps is protected by the single kernel lock */
lock_kernel();
spin_lock(&redirect_lock);
if (redirect && redirect->private_data == tty) {
@ -515,6 +513,8 @@ static void do_tty_hangup(struct work_struct *work)
}
spin_unlock(&redirect_lock);
/* inuse_filps is protected by the single kernel lock */
lock_kernel();
check_tty_count(tty, "do_tty_hangup");
file_list_lock();
/* This breaks for file handles being sent over AF_UNIX sockets ? */