path: root/ipc/shm.c
diff options
authorArjan van de Ven <arjan@linux.intel.com>2007-02-12 00:55:35 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 09:48:46 -0800
commit9a32144e9d7b4e21341174b1a83b82a82353be86 (patch)
tree6f08560b341418fc9934f56f6162a95f5b5d8aec /ipc/shm.c
parent00977a59b951207d38380c75f03a36829950265c (diff)
[PATCH] mark struct file_operations const 7
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>
Diffstat (limited to 'ipc/shm.c')
1 files changed, 2 insertions, 2 deletions
diff --git a/ipc/shm.c b/ipc/shm.c
index f8e10a25ad7..5bb617f6306 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -42,7 +42,7 @@
#include "util.h"
-static struct file_operations shm_file_operations;
+static const struct file_operations shm_file_operations;
static struct vm_operations_struct shm_vm_ops;
static struct ipc_ids init_shm_ids;
@@ -249,7 +249,7 @@ static int shm_release(struct inode *ino, struct file *file)
return 0;
-static struct file_operations shm_file_operations = {
+static const struct file_operations shm_file_operations = {
.mmap = shm_mmap,
.release = shm_release,
#ifndef CONFIG_MMU