[PATCH] mark struct file_operations const 5

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>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index b99dc50..c436d3d 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -156,7 +156,7 @@ static struct inode *ibmasmfs_make_inode(struct super_block *sb, int mode)
 static struct dentry *ibmasmfs_create_file (struct super_block *sb,
 			struct dentry *parent,
 		       	const char *name,
-			struct file_operations *fops,
+			const struct file_operations *fops,
 			void *data,
 			int mode)
 {
@@ -581,28 +581,28 @@ static ssize_t remote_settings_file_write(struct file *file, const char __user *
 	return count;
 }
 
-static struct file_operations command_fops = {
+static const struct file_operations command_fops = {
 	.open =		command_file_open,
 	.release =	command_file_close,
 	.read =		command_file_read,
 	.write =	command_file_write,
 };
 
-static struct file_operations event_fops = {
+static const struct file_operations event_fops = {
 	.open =		event_file_open,
 	.release =	event_file_close,
 	.read =		event_file_read,
 	.write =	event_file_write,
 };
 
-static struct file_operations r_heartbeat_fops = {
+static const struct file_operations r_heartbeat_fops = {
 	.open =		r_heartbeat_file_open,
 	.release =	r_heartbeat_file_close,
 	.read =		r_heartbeat_file_read,
 	.write =	r_heartbeat_file_write,
 };
 
-static struct file_operations remote_settings_fops = {
+static const struct file_operations remote_settings_fops = {
 	.open =		remote_settings_file_open,
 	.release =	remote_settings_file_close,
 	.read =		remote_settings_file_read,