[PATCH] make more file_operation structs static

Mark the static struct file_operations in drivers/char as const.  Making
them const prevents accidental bugs, and moves them to the .rodata section
so that they no longer do any false sharing; in addition with the proper
debug option they are then protected against corruption..

[akpm@osdl.org: build fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/drivers/char/tty_io.c b/drivers/char/tty_io.c
index 615e934da05f..6fb77952562d 100644
--- a/drivers/char/tty_io.c
+++ b/drivers/char/tty_io.c
@@ -912,7 +912,7 @@ static int hung_up_tty_ioctl(struct inode * inode, struct file * file,
         return cmd == TIOCSPGRP ? -ENOTTY : -EIO;
 }
 
-static struct file_operations tty_fops = {
+static const struct file_operations tty_fops = {
         .llseek         = no_llseek,
         .read           = tty_read,
         .write          = tty_write,
@@ -924,7 +924,7 @@ static struct file_operations tty_fops = {
 };
 
 #ifdef CONFIG_UNIX98_PTYS
-static struct file_operations ptmx_fops = {
+static const struct file_operations ptmx_fops = {
         .llseek         = no_llseek,
         .read           = tty_read,
         .write          = tty_write,
@@ -936,7 +936,7 @@ static struct file_operations ptmx_fops = {
 };
 #endif
 
-static struct file_operations console_fops = {
+static const struct file_operations console_fops = {
         .llseek         = no_llseek,
         .read           = tty_read,
         .write          = redirected_tty_write,
@@ -947,7 +947,7 @@ static struct file_operations console_fops = {
         .fasync         = tty_fasync,
 };
 
-static struct file_operations hung_up_tty_fops = {
+static const struct file_operations hung_up_tty_fops = {
         .llseek         = no_llseek,
         .read           = hung_up_tty_read,
         .write          = hung_up_tty_write,