[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>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/rtas_flash.c b/arch/powerpc/kernel/rtas_flash.c
index 65e4ebe8db31..f72118c0844f 100644
--- a/arch/powerpc/kernel/rtas_flash.c
+++ b/arch/powerpc/kernel/rtas_flash.c
@@ -702,7 +702,7 @@ static int initialize_flash_pde_data(const char *rtas_call_name,
 }
 
 static struct proc_dir_entry *create_flash_pde(const char *filename,
-					       struct file_operations *fops)
+					       const struct file_operations *fops)
 {
 	struct proc_dir_entry *ent = NULL;
 
@@ -715,21 +715,21 @@ static struct proc_dir_entry *create_flash_pde(const char *filename,
 	return ent;
 }
 
-static struct file_operations rtas_flash_operations = {
+static const struct file_operations rtas_flash_operations = {
 	.read		= rtas_flash_read,
 	.write		= rtas_flash_write,
 	.open		= rtas_excl_open,
 	.release	= rtas_flash_release,
 };
 
-static struct file_operations manage_flash_operations = {
+static const struct file_operations manage_flash_operations = {
 	.read		= manage_flash_read,
 	.write		= manage_flash_write,
 	.open		= rtas_excl_open,
 	.release	= rtas_excl_release,
 };
 
-static struct file_operations validate_flash_operations = {
+static const struct file_operations validate_flash_operations = {
 	.read		= validate_flash_read,
 	.write		= validate_flash_write,
 	.open		= rtas_excl_open,