[PATCH] mark struct file_operations const 3

Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

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

7 files changed, 7 insertions, 7 deletions

diff --git a/drivers/char/watchdog/iTCO_wdt.c b/drivers/char/watchdog/iTCO_wdt.c
index 7eac922df867..fd8a44a08cd3 100644
--- a/drivers/char/watchdog/iTCO_wdt.c
+++ b/drivers/char/watchdog/iTCO_wdt.c
@@ -539,7 +539,7 @@ static int iTCO_wdt_ioctl (struct inode *inode, struct file *file,
  *	Kernel Interfaces
  */
 
-static struct file_operations iTCO_wdt_fops = {
+static const struct file_operations iTCO_wdt_fops = {
 	.owner =	THIS_MODULE,
 	.llseek =	no_llseek,
 	.write =	iTCO_wdt_write,
diff --git a/drivers/char/watchdog/omap_wdt.c b/drivers/char/watchdog/omap_wdt.c
index 6c6f97332dbb..84074a697dce 100644
--- a/drivers/char/watchdog/omap_wdt.c
+++ b/drivers/char/watchdog/omap_wdt.c
@@ -230,7 +230,7 @@ omap_wdt_ioctl(struct inode *inode, struct file *file,
 	}
 }
 
-static struct file_operations omap_wdt_fops = {
+static const struct file_operations omap_wdt_fops = {
 	.owner = THIS_MODULE,
 	.write = omap_wdt_write,
 	.ioctl = omap_wdt_ioctl,
diff --git a/drivers/char/watchdog/pc87413_wdt.c b/drivers/char/watchdog/pc87413_wdt.c
index 1d447e32af41..a77a90717ad2 100644
--- a/drivers/char/watchdog/pc87413_wdt.c
+++ b/drivers/char/watchdog/pc87413_wdt.c
@@ -526,7 +526,7 @@ static int pc87413_notify_sys(struct notifier_block *this,
 
 /* -- Module's structures ---------------------------------------*/
 
-static struct file_operations pc87413_fops = {
+static const struct file_operations pc87413_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= pc87413_write,
diff --git a/drivers/char/watchdog/pnx4008_wdt.c b/drivers/char/watchdog/pnx4008_wdt.c
index 3a55fc6abcd8..ff6f1ca1e5e7 100644
--- a/drivers/char/watchdog/pnx4008_wdt.c
+++ b/drivers/char/watchdog/pnx4008_wdt.c
@@ -238,7 +238,7 @@ static int pnx4008_wdt_release(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static struct file_operations pnx4008_wdt_fops = {
+static const struct file_operations pnx4008_wdt_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_llseek,
 	.write = pnx4008_wdt_write,
diff --git a/drivers/char/watchdog/rm9k_wdt.c b/drivers/char/watchdog/rm9k_wdt.c
index 7576a13e86bc..b4678839d3bb 100644
--- a/drivers/char/watchdog/rm9k_wdt.c
+++ b/drivers/char/watchdog/rm9k_wdt.c
@@ -95,7 +95,7 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be disabled once started");
 
 
 /* Kernel interfaces */
-static struct file_operations fops = {
+static const struct file_operations fops = {
 	.owner		= THIS_MODULE,
 	.open		= wdt_gpi_open,
 	.release	= wdt_gpi_release,
diff --git a/drivers/char/watchdog/smsc37b787_wdt.c b/drivers/char/watchdog/smsc37b787_wdt.c
index 9f56913b484f..a9681d580dd3 100644
--- a/drivers/char/watchdog/smsc37b787_wdt.c
+++ b/drivers/char/watchdog/smsc37b787_wdt.c
@@ -510,7 +510,7 @@ static int wb_smsc_wdt_notify_sys(struct notifier_block *this, unsigned long cod
 
 /* -- Module's structures ---------------------------------------*/
 
-static struct file_operations wb_smsc_wdt_fops =
+static const struct file_operations wb_smsc_wdt_fops =
 {
 	.owner          = THIS_MODULE,
 	.llseek		= no_llseek,
diff --git a/drivers/char/watchdog/w83697hf_wdt.c b/drivers/char/watchdog/w83697hf_wdt.c
index 7768b55487c8..c960ec110dd7 100644
--- a/drivers/char/watchdog/w83697hf_wdt.c
+++ b/drivers/char/watchdog/w83697hf_wdt.c
@@ -323,7 +323,7 @@ wdt_notify_sys(struct notifier_block *this, unsigned long code,
  *	Kernel Interfaces
  */
 
-static struct file_operations wdt_fops = {
+static const struct file_operations wdt_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= wdt_write,