tree 7868ef29c68bd7265dcf6fe5b2ab4088abeb7842
parent 527ffc11e1c0aa049b3a831d6f07ed98e06a0819
author Peter Hurley <peter@hurleysoftware.com> 1452404123 -0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1453936408 -0800

tty: Make tty_files_lock per-tty

Access to tty->tty_files list is always per-tty, never for all ttys
simultaneously. Replace global tty_files_lock spinlock with per-tty
->files_lock. Initialize when the ->tty_files list is inited, in
alloc_tty_struct().

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>