[PATCH] mark struct inode_operations const 3

Many struct inode_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/ufs/namei.c

@@ -355,7 +355,7 @@ out:
 	return err;
 }
 
-struct inode_operations ufs_dir_inode_operations = {
+const struct inode_operations ufs_dir_inode_operations = {
 	.create		= ufs_create,
 	.lookup		= ufs_lookup,
 	.link		= ufs_link,

fs/ufs/symlink.c

@@ -36,7 +36,7 @@ static void *ufs_follow_link(struct dentry *dentry, struct nameidata *nd)
 	return NULL;
 }
 
-struct inode_operations ufs_fast_symlink_inode_operations = {
+const struct inode_operations ufs_fast_symlink_inode_operations = {
 	.readlink	= generic_readlink,
 	.follow_link	= ufs_follow_link,
 };

fs/ufs/truncate.c

@@ -513,6 +513,6 @@ static int ufs_setattr(struct dentry *dentry, struct iattr *attr)
 	return inode_setattr(inode, attr);
 }
 
-struct inode_operations ufs_file_inode_operations = {
+const struct inode_operations ufs_file_inode_operations = {
 	.setattr = ufs_setattr,
 };