TTY: move ldisc data from tty_struct: locks

[karo-tx-linux.git] / include / linux / tty.h

diff --git a/include/linux/tty.h b/include/linux/tty.h
index de590cec973b80d50bdea075c71dcba9f22c7f14..08787ece3fdc152358493f9fa3085adc377224e4 100644 (file)
--- 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;
@@ -265,32 +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;
-       unsigned long process_char_map[256/(8*sizeof(unsigned long))];
-       char *read_buf;
-       int read_head;
-       int read_tail;
-       int read_cnt;
-       unsigned long read_flags[N_TTY_BUF_SIZE/(8*sizeof(unsigned long))];
-       unsigned char *echo_buf;
-       unsigned int echo_pos;
-       unsigned int echo_cnt;
-       int canon_data;
-       unsigned long canon_head;
-       unsigned int canon_column;
-       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;