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authorJiri Slaby <jslaby@suse.cz>2012-10-18 22:26:42 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-22 16:53:01 -0700
commitbddc7152f68bc1e0ee1f55a8055e33531f384101 (patch)
tree2d34628864104d0913d18cccc7eee51f730fdea9 /include/linux/tty.h
parentba2e68ac6157004ee4922fb39ebd9459bbae883e (diff)
TTY: move ldisc data from tty_struct: locks
atomic_write_lock is not n_tty specific, so move it up in the tty_struct. And since these are the last ones to move, remove also the comment saying there are some ldisc' members. There are none now. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/tty.h')
-rw-r--r--include/linux/tty.h11
1 files changed, 1 insertions, 10 deletions
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 226cf20e0150..08787ece3fdc 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -235,6 +235,7 @@ struct tty_struct {
struct mutex ldisc_mutex;
struct tty_ldisc *ldisc;
+ struct mutex atomic_write_lock;
struct mutex legacy_mutex;
struct mutex termios_mutex;
spinlock_t ctrl_lock;
@@ -265,20 +266,10 @@ struct tty_struct {
#define N_TTY_BUF_SIZE 4096
- /*
- * The following is data for the N_TTY line discipline. For
- * historical reasons, this is included in the tty structure.
- * Mostly locked by the BKL.
- */
unsigned char closing:1;
unsigned short minimum_to_wake;
- struct mutex atomic_read_lock;
- struct mutex atomic_write_lock;
- struct mutex output_lock;
- struct mutex echo_lock;
unsigned char *write_buf;
int write_cnt;
- spinlock_t read_lock;
/* If the tty has a pending do_SAK, queue it here - akpm */
struct work_struct SAK_work;
struct tty_port *port;