diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/tty.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h index 55964b9490dd..fe5623c9af71 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h | |||
| @@ -25,6 +25,9 @@ | |||
| 25 | * | 25 | * |
| 26 | * legacy_mutex - Nested tty locks are necessary for releasing pty pairs. | 26 | * legacy_mutex - Nested tty locks are necessary for releasing pty pairs. |
| 27 | * The stable lock order is master pty first, then slave pty. | 27 | * The stable lock order is master pty first, then slave pty. |
| 28 | * termios_rwsem - The stable lock order is tty_buffer lock->termios_rwsem. | ||
| 29 | * Subclassing this lock enables the slave pty to hold its | ||
| 30 | * termios_rwsem when claiming the master tty_buffer lock. | ||
| 28 | * tty_buffer lock - slave ptys can claim nested buffer lock when handling | 31 | * tty_buffer lock - slave ptys can claim nested buffer lock when handling |
| 29 | * signal chars. The stable lock order is slave pty, then | 32 | * signal chars. The stable lock order is slave pty, then |
| 30 | * master. | 33 | * master. |