[PATCH] mark struct file_operations const 2

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.

[akpm@osdl.org: sparc64 fix]
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>

5 files changed, 5 insertions, 5 deletions

diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c
index 3cf4f23de1d0..88eff7f54ea6 100644
--- a/arch/cris/arch-v10/drivers/ds1302.c
+++ b/arch/cris/arch-v10/drivers/ds1302.c
@@ -499,7 +499,7 @@ print_rtc_status(void)
 
 /* The various file operations we support. */
 
-static struct file_operations rtc_fops = {
+static const struct file_operations rtc_fops = {
 	.owner =	THIS_MODULE,
 	.ioctl =	rtc_ioctl,
 }; 
diff --git a/arch/cris/arch-v10/drivers/eeprom.c b/arch/cris/arch-v10/drivers/eeprom.c
index 284ebfda03f0..be35a70798aa 100644
--- a/arch/cris/arch-v10/drivers/eeprom.c
+++ b/arch/cris/arch-v10/drivers/eeprom.c
@@ -172,7 +172,7 @@ static const char eeprom_name[] = "eeprom";
 static struct eeprom_type eeprom;
 
 /* This is the exported file-operations structure for this device. */
-struct file_operations eeprom_fops =
+const struct file_operations eeprom_fops =
 {
   .llseek  = eeprom_lseek,
   .read    = eeprom_read,
diff --git a/arch/cris/arch-v10/drivers/gpio.c b/arch/cris/arch-v10/drivers/gpio.c
index 9aba18b931dd..f389ed6998fe 100644
--- a/arch/cris/arch-v10/drivers/gpio.c
+++ b/arch/cris/arch-v10/drivers/gpio.c
@@ -838,7 +838,7 @@ gpio_leds_ioctl(unsigned int cmd, unsigned long arg)
 	return 0;
 }
 
-struct file_operations gpio_fops = {
+const struct file_operations gpio_fops = {
 	.owner       = THIS_MODULE,
 	.poll        = gpio_poll,
 	.ioctl       = gpio_ioctl,
diff --git a/arch/cris/arch-v10/drivers/i2c.c b/arch/cris/arch-v10/drivers/i2c.c
index 092c724a645f..aca81ddaf60f 100644
--- a/arch/cris/arch-v10/drivers/i2c.c
+++ b/arch/cris/arch-v10/drivers/i2c.c
@@ -692,7 +692,7 @@ i2c_ioctl(struct inode *inode, struct file *file,
 	return 0;
 }
 
-static struct file_operations i2c_fops = {
+static const struct file_operations i2c_fops = {
 	.owner    = THIS_MODULE,
 	.ioctl    = i2c_ioctl,
 	.open     = i2c_open,
diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c
index 8c830eefc89c..107796e50149 100644
--- a/arch/cris/arch-v10/drivers/pcf8563.c
+++ b/arch/cris/arch-v10/drivers/pcf8563.c
@@ -56,7 +56,7 @@ static const unsigned char days_in_month[] =
 
 int pcf8563_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
 
-static struct file_operations pcf8563_fops = {
+static const struct file_operations pcf8563_fops = {
 	.owner = THIS_MODULE,
 	.ioctl = pcf8563_ioctl,
 };