[PATCH] mark struct file_operations const 6

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 <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

fs/debugfs/file.c

@@ -254,7 +254,7 @@ static ssize_t read_file_blob(struct file *file, char __user *user_buf,
 			blob->size);
 }
 
-static struct file_operations fops_blob = {
+static const struct file_operations fops_blob = {
 	.read =		read_file_blob,
 	.open =		default_open,
 };