[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>
diff --git a/drivers/char/watchdog/iTCO_wdt.c b/drivers/char/watchdog/iTCO_wdt.c
index 7eac922..fd8a44a 100644
--- a/drivers/char/watchdog/iTCO_wdt.c
+++ b/drivers/char/watchdog/iTCO_wdt.c
@@ -539,7 +539,7 @@
* 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 6c6f973..84074a6 100644
--- a/drivers/char/watchdog/omap_wdt.c
+++ b/drivers/char/watchdog/omap_wdt.c
@@ -230,7 +230,7 @@
}
}
-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 1d447e32..a77a907 100644
--- a/drivers/char/watchdog/pc87413_wdt.c
+++ b/drivers/char/watchdog/pc87413_wdt.c
@@ -526,7 +526,7 @@
/* -- 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 3a55fc6..ff6f1ca 100644
--- a/drivers/char/watchdog/pnx4008_wdt.c
+++ b/drivers/char/watchdog/pnx4008_wdt.c
@@ -238,7 +238,7 @@
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 7576a13..b467883 100644
--- a/drivers/char/watchdog/rm9k_wdt.c
+++ b/drivers/char/watchdog/rm9k_wdt.c
@@ -95,7 +95,7 @@
/* 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 9f56913..a9681d5 100644
--- a/drivers/char/watchdog/smsc37b787_wdt.c
+++ b/drivers/char/watchdog/smsc37b787_wdt.c
@@ -510,7 +510,7 @@
/* -- 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 7768b55..c960ec1 100644
--- a/drivers/char/watchdog/w83697hf_wdt.c
+++ b/drivers/char/watchdog/w83697hf_wdt.c
@@ -323,7 +323,7 @@
* Kernel Interfaces
*/
-static struct file_operations wdt_fops = {
+static const struct file_operations wdt_fops = {
.owner = THIS_MODULE,
.llseek = no_llseek,
.write = wdt_write,