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| author | Peter Hurley <peter@hurleysoftware.com> | 2014-11-05 12:13:02 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-05 18:50:42 -0800 |
| commit | 2febdb632bb96235b94b8fccaf882a78f8f4b2bb (patch) | |
| tree | f4740b43b225a863f05df7edb59d3b3badfdb445 /include | |
| parent | 2aff5e2bc62db43e05c814461a08aff0fc2b7fe5 (diff) | |
| download | linux-2febdb632bb96235b94b8fccaf882a78f8f4b2bb.tar.gz linux-2febdb632bb96235b94b8fccaf882a78f8f4b2bb.tar.bz2 linux-2febdb632bb96235b94b8fccaf882a78f8f4b2bb.zip | |
tty: Preset lock subclass for nested tty locks
Eliminate the requirement of specifying the tty lock nesting at
lock time; instead, set the lock subclass for slave ptys at pty
install (normal ttys and master ptys use subclass 0).
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/tty.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index a07b4b415db8..196c352a5ce8 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -640,6 +640,7 @@ extern void __lockfunc tty_lock(struct tty_struct *tty); extern void __lockfunc tty_unlock(struct tty_struct *tty); extern void __lockfunc tty_lock_slave(struct tty_struct *tty); extern void __lockfunc tty_unlock_slave(struct tty_struct *tty); +extern void tty_set_lock_subclass(struct tty_struct *tty); /* * this shall be called only from where BTM is held (like close) * |