--------------------------- inode_operations ---------------------------
prototypes:
- int (*create) (struct inode *,struct dentry *,umode_t, struct nameidata *);
+ int (*create) (struct inode *,struct dentry *,umode_t, bool);
struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
int (*link) (struct dentry *,struct inode *,struct dentry *);
int (*unlink) (struct inode *,struct dentry *);