[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>

2 files changed, 3 insertions, 3 deletions

diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index a4fda7b53640..ba5d3167df0d 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -34,7 +34,7 @@ struct hypfs_sb_info {
         struct mutex lock;              /* lock to protect update process */
 };
 
-static struct file_operations hypfs_file_ops;
+static const struct file_operations hypfs_file_ops;
 static struct file_system_type hypfs_type;
 static struct super_operations hypfs_s_ops;
 
@@ -440,7 +440,7 @@ struct dentry *hypfs_create_str(struct super_block *sb, struct dentry *dir,
         return dentry;
 }
 
-static struct file_operations hypfs_file_ops = {
+static const struct file_operations hypfs_file_ops = {
         .open           = hypfs_open,
         .release        = hypfs_release,
         .read           = do_sync_read,
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c
index f4b62df02aa2..51653d82d7df 100644
--- a/arch/s390/kernel/debug.c
+++ b/arch/s390/kernel/debug.c
@@ -167,7 +167,7 @@ static DECLARE_MUTEX(debug_lock);
 
 static int initialized;
 
-static struct file_operations debug_file_ops = {
+static const struct file_operations debug_file_ops = {
         .owner   = THIS_MODULE,
         .read    = debug_output,
         .write   = debug_input,