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| author | Peter Hurley <peter@hurleysoftware.com> | 2013-06-15 09:14:23 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-07-23 16:43:01 -0700 |
| commit | 6a1c0680cf3ba94356ecd58833e1540c93472a57 (patch) | |
| tree | d370b0888214bb59049181ac98c567d153263f48 /drivers/tty/vt | |
| parent | a2f73be8ee36e48f11f89ab705beb3c587a2f320 (diff) | |
| download | blackbird-op-linux-6a1c0680cf3ba94356ecd58833e1540c93472a57.tar.gz blackbird-op-linux-6a1c0680cf3ba94356ecd58833e1540c93472a57.zip | |
tty: Convert termios_mutex to termios_rwsem
termios is commonly accessed unsafely (especially by N_TTY)
because the existing mutex forces exclusive access.
Convert existing usage.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/vt')
| -rw-r--r-- | drivers/tty/vt/vt.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c index c677829baa8b..02af6ccefe6a 100644 --- a/drivers/tty/vt/vt.c +++ b/drivers/tty/vt/vt.c @@ -828,7 +828,7 @@ static inline int resize_screen(struct vc_data *vc, int width, int height, * If the caller passes a tty structure then update the termios winsize * information and perform any necessary signal handling. * - * Caller must hold the console semaphore. Takes the termios mutex and + * Caller must hold the console semaphore. Takes the termios rwsem and * ctrl_lock of the tty IFF a tty is passed. */ @@ -972,7 +972,7 @@ int vc_resize(struct vc_data *vc, unsigned int cols, unsigned int rows) * the actual work. * * Takes the console sem and the called methods then take the tty - * termios_mutex and the tty ctrl_lock in that order. + * termios_rwsem and the tty ctrl_lock in that order. */ static int vt_resize(struct tty_struct *tty, struct winsize *ws) { |
