[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>

4 files changed, 4 insertions, 4 deletions

diff --git a/arch/sh/boards/landisk/landisk_pwb.c b/arch/sh/boards/landisk/landisk_pwb.c
index e62524978160..47a63c6617ed 100644
--- a/arch/sh/boards/landisk/landisk_pwb.c
+++ b/arch/sh/boards/landisk/landisk_pwb.c
@@ -150,7 +150,7 @@ static irqreturn_t sw_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static struct file_operations swdrv_fops = {
+static const struct file_operations swdrv_fops = {
 	.read = swdrv_read,	/* read */
 	.write = swdrv_write,	/* write */
 	.open = swdrv_open,	/* open */
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c
index e0122bd33ddb..909dcfa8c8c6 100644
--- a/arch/sh/mm/cache-debugfs.c
+++ b/arch/sh/mm/cache-debugfs.c
@@ -114,7 +114,7 @@ static int cache_debugfs_open(struct inode *inode, struct file *file)
 	return single_open(file, cache_seq_show, inode->i_private);
 }
 
-static struct file_operations cache_debugfs_fops = {
+static const struct file_operations cache_debugfs_fops = {
 	.owner		= THIS_MODULE,
 	.open		= cache_debugfs_open,
 	.read		= seq_read,
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index b60ad83a7635..d0d45e2e0ab3 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -378,7 +378,7 @@ static int pmb_debugfs_open(struct inode *inode, struct file *file)
 	return single_open(file, pmb_seq_show, NULL);
 }
 
-static struct file_operations pmb_debugfs_fops = {
+static const struct file_operations pmb_debugfs_fops = {
 	.owner		= THIS_MODULE,
 	.open		= pmb_debugfs_open,
 	.read		= seq_read,
diff --git a/arch/sh/oprofile/op_model_sh7750.c b/arch/sh/oprofile/op_model_sh7750.c
index 60402eec4b4d..0104e44bc76a 100644
--- a/arch/sh/oprofile/op_model_sh7750.c
+++ b/arch/sh/oprofile/op_model_sh7750.c
@@ -187,7 +187,7 @@ static ssize_t sh7750_write_count(struct file *file, const char __user *buf,
 	return count;
 }
 
-static struct file_operations count_fops = {
+static const struct file_operations count_fops = {
 	.read		= sh7750_read_count,
 	.write		= sh7750_write_count,
 };