108 struct dentry {  struct
113 	struct dentry *d_parent;	/* parent directory */  argument
151 	int (*d_revalidate)(struct dentry *, unsigned int);
152 	int (*d_weak_revalidate)(struct dentry *, unsigned int);
153 	int (*d_hash)(const struct dentry *, struct qstr *);
154 	int (*d_compare)(const struct dentry *, const struct dentry *,
156 	int (*d_delete)(const struct dentry *);
157 	void (*d_release)(struct dentry *);
158 	void (*d_prune)(struct dentry *);
159 	void (*d_iput)(struct dentry *, struct inode *);
160 	char *(*d_dname)(struct dentry *, char *, int);
162 	int (*d_manage)(struct dentry *, bool);
163 	struct inode *(*d_select_inode)(struct dentry *, unsigned);
236 extern void d_instantiate(struct dentry *, struct inode *);
237 extern struct dentry * d_instantiate_unique(struct dentry *, struct inode *);
238 extern int d_instantiate_no_diralias(struct dentry *, struct inode *);
239 extern void __d_drop(struct dentry *dentry);
240 extern void d_drop(struct dentry *dentry);
241 extern void d_delete(struct dentry *);
242 extern void d_set_d_op(struct dentry *dentry, const struct dentry_operations *op);
245 extern struct dentry * d_alloc(struct dentry *, const struct qstr *);
246 extern struct dentry * d_alloc_pseudo(struct super_block *, const struct qstr *);
247 extern struct dentry * d_splice_alias(struct inode *, struct dentry *);
248 extern struct dentry * d_add_ci(struct dentry *, struct inode *, struct qstr *);
249 extern struct dentry *d_find_any_alias(struct inode *inode);
250 extern struct dentry * d_obtain_alias(struct inode *);
251 extern struct dentry * d_obtain_root(struct inode *);
253 extern void shrink_dcache_parent(struct dentry *);
255 extern void d_invalidate(struct dentry *);
258 extern struct dentry * d_make_root(struct inode *);
261 extern void d_genocide(struct dentry *);
263 extern void d_tmpfile(struct dentry *, struct inode *);
265 extern struct dentry *d_find_alias(struct inode *);
269 extern int have_submounts(struct dentry *);
274 extern void d_rehash(struct dentry *);
285 static inline void d_add(struct dentry *entry, struct inode *inode)  in d_add()
299 static inline struct dentry *d_add_unique(struct dentry *entry, struct inode *inode)  in d_add_unique()
301 	struct dentry *res;  in d_add_unique()
308 extern void dentry_update_name_case(struct dentry *, struct qstr *);
311 extern void d_move(struct dentry *, struct dentry *);
312 extern void d_exchange(struct dentry *, struct dentry *);
313 extern struct dentry *d_ancestor(struct dentry *, struct dentry *);
316 extern struct dentry *d_lookup(const struct dentry *, const struct qstr *);
317 extern struct dentry *d_hash_and_lookup(struct dentry *, struct qstr *);
318 extern struct dentry *__d_lookup(const struct dentry *, const struct qstr *);
319 extern struct dentry *__d_lookup_rcu(const struct dentry *parent,
322 static inline unsigned d_count(const struct dentry *dentry)  in d_count()  argument
324 	return dentry->d_lockref.count;  in d_count()
330 extern char *dynamic_dname(struct dentry *, char *, int, const char *, ...);
331 extern char *simple_dname(struct dentry *, char *, int);
336 extern char *dentry_path_raw(struct dentry *, char *, int);
337 extern char *dentry_path(struct dentry *, char *, int);
349 static inline struct dentry *dget_dlock(struct dentry *dentry)  in dget_dlock()  argument
351 	if (dentry)  in dget_dlock()
352 		dentry->d_lockref.count++;  in dget_dlock()
353 	return dentry;  in dget_dlock()
356 static inline struct dentry *dget(struct dentry *dentry)  in dget()  argument
358 	if (dentry)  in dget()
359 		lockref_get(&dentry->d_lockref);  in dget()
360 	return dentry;  in dget()
363 extern struct dentry *dget_parent(struct dentry *dentry);
372 static inline int d_unhashed(const struct dentry *dentry)  in d_unhashed()  argument
374 	return hlist_bl_unhashed(&dentry->d_hash);  in d_unhashed()
377 static inline int d_unlinked(const struct dentry *dentry)  in d_unlinked()  argument
379 	return d_unhashed(dentry) && !IS_ROOT(dentry);  in d_unlinked()
382 static inline int cant_mount(const struct dentry *dentry)  in cant_mount()  argument
384 	return (dentry->d_flags & DCACHE_CANT_MOUNT);  in cant_mount()
387 static inline void dont_mount(struct dentry *dentry)  in dont_mount()  argument
389 	spin_lock(&dentry->d_lock);  in dont_mount()
390 	dentry->d_flags |= DCACHE_CANT_MOUNT;  in dont_mount()
391 	spin_unlock(&dentry->d_lock);  in dont_mount()
394 extern void dput(struct dentry *);
396 static inline bool d_managed(const struct dentry *dentry)  in d_managed()  argument
398 	return dentry->d_flags & DCACHE_MANAGED_DENTRY;  in d_managed()
401 static inline bool d_mountpoint(const struct dentry *dentry)  in d_mountpoint()  argument
403 	return dentry->d_flags & DCACHE_MOUNTED;  in d_mountpoint()
409 static inline unsigned __d_entry_type(const struct dentry *dentry)  in __d_entry_type()  argument
411 	return dentry->d_flags & DCACHE_ENTRY_TYPE;  in __d_entry_type()
414 static inline bool d_is_miss(const struct dentry *dentry)  in d_is_miss()  argument
416 	return __d_entry_type(dentry) == DCACHE_MISS_TYPE;  in d_is_miss()
419 static inline bool d_is_whiteout(const struct dentry *dentry)  in d_is_whiteout()  argument
421 	return __d_entry_type(dentry) == DCACHE_WHITEOUT_TYPE;  in d_is_whiteout()
424 static inline bool d_can_lookup(const struct dentry *dentry)  in d_can_lookup()  argument
426 	return __d_entry_type(dentry) == DCACHE_DIRECTORY_TYPE;  in d_can_lookup()
429 static inline bool d_is_autodir(const struct dentry *dentry)  in d_is_autodir()  argument
431 	return __d_entry_type(dentry) == DCACHE_AUTODIR_TYPE;  in d_is_autodir()
434 static inline bool d_is_dir(const struct dentry *dentry)  in d_is_dir()  argument
436 	return d_can_lookup(dentry) || d_is_autodir(dentry);  in d_is_dir()
439 static inline bool d_is_symlink(const struct dentry *dentry)  in d_is_symlink()  argument
441 	return __d_entry_type(dentry) == DCACHE_SYMLINK_TYPE;  in d_is_symlink()
444 static inline bool d_is_reg(const struct dentry *dentry)  in d_is_reg()  argument
446 	return __d_entry_type(dentry) == DCACHE_REGULAR_TYPE;  in d_is_reg()
449 static inline bool d_is_special(const struct dentry *dentry)  in d_is_special()  argument
451 	return __d_entry_type(dentry) == DCACHE_SPECIAL_TYPE;  in d_is_special()
454 static inline bool d_is_file(const struct dentry *dentry)  in d_is_file()  argument
456 	return d_is_reg(dentry) || d_is_special(dentry);  in d_is_file()
459 static inline bool d_is_negative(const struct dentry *dentry)  in d_is_negative()  argument
462 	return d_is_miss(dentry);  in d_is_negative()
465 static inline bool d_is_positive(const struct dentry *dentry)  in d_is_positive()  argument
467 	return !d_is_negative(dentry);  in d_is_positive()
485 static inline bool d_really_is_negative(const struct dentry *dentry)  in d_really_is_negative()  argument
487 	return dentry->d_inode == NULL;  in d_really_is_negative()
503 static inline bool d_really_is_positive(const struct dentry *dentry)  in d_really_is_positive()  argument
505 	return dentry->d_inode != NULL;  in d_really_is_positive()
508 extern void d_set_fallthru(struct dentry *dentry);
510 static inline bool d_is_fallthru(const struct dentry *dentry)  in d_is_fallthru()  argument
512 	return dentry->d_flags & DCACHE_FALLTHRU;  in d_is_fallthru()
530 static inline struct inode *d_inode(const struct dentry *dentry)  in d_inode()  argument
532 	return dentry->d_inode;  in d_inode()
542 static inline struct inode *d_inode_rcu(const struct dentry *dentry)  in d_inode_rcu()  argument
544 	return ACCESS_ONCE(dentry->d_inode);  in d_inode_rcu()
557 static inline struct inode *d_backing_inode(const struct dentry *upper)  in d_backing_inode()
574 static inline struct dentry *d_backing_dentry(struct dentry *upper)  in d_backing_dentry()