68 static struct dentry *__ovl_dentry_lower(struct ovl_entry *oe)  in __ovl_dentry_lower()  argument
70 	return oe->numlower ? oe->lowerstack[0].dentry : NULL;  in __ovl_dentry_lower()
75 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_path_type()  local
78 	if (oe->__upperdentry) {  in ovl_path_type()
85 		if (oe->numlower && S_ISDIR(dentry->d_inode->i_mode))  in ovl_path_type()
87 		else if (!oe->opaque)  in ovl_path_type()
90 		if (oe->numlower > 1)  in ovl_path_type()
96 static struct dentry *ovl_upperdentry_dereference(struct ovl_entry *oe)  in ovl_upperdentry_dereference()  argument
98 	return lockless_dereference(oe->__upperdentry);  in ovl_upperdentry_dereference()
104 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_path_upper()  local
107 	path->dentry = ovl_upperdentry_dereference(oe);  in ovl_path_upper()
124 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_upper()  local
126 	return ovl_upperdentry_dereference(oe);  in ovl_dentry_upper()
131 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_lower()  local
133 	return __ovl_dentry_lower(oe);  in ovl_dentry_lower()
138 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_real()  local
141 	realdentry = ovl_upperdentry_dereference(oe);  in ovl_dentry_real()
143 		realdentry = __ovl_dentry_lower(oe);  in ovl_dentry_real()
148 struct dentry *ovl_entry_real(struct ovl_entry *oe, bool *is_upper)  in ovl_entry_real()  argument
152 	realdentry = ovl_upperdentry_dereference(oe);  in ovl_entry_real()
156 		realdentry = __ovl_dentry_lower(oe);  in ovl_entry_real()
164 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dir_cache()  local
166 	return oe->cache;  in ovl_dir_cache()
171 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_set_dir_cache()  local
173 	oe->cache = cache;  in ovl_set_dir_cache()
178 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_path_lower()  local
180 	*path = oe->numlower ? oe->lowerstack[0] : (struct path) { NULL, NULL };  in ovl_path_lower()
203 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_is_opaque()  local
204 	return oe->opaque;  in ovl_dentry_is_opaque()
209 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_set_opaque()  local
210 	oe->opaque = opaque;  in ovl_dentry_set_opaque()
215 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_update()  local
218 	WARN_ON(oe->__upperdentry);  in ovl_dentry_update()
225 	oe->__upperdentry = upperdentry;  in ovl_dentry_update()
230 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_version_inc()  local
233 	oe->version++;  in ovl_dentry_version_inc()
238 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_version_get()  local
241 	return oe->version;  in ovl_dentry_version_get()
276 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_release()  local
278 	if (oe) {  in ovl_dentry_release()
281 		dput(oe->__upperdentry);  in ovl_dentry_release()
282 		for (i = 0; i < oe->numlower; i++)  in ovl_dentry_release()
283 			dput(oe->lowerstack[i].dentry);  in ovl_dentry_release()
284 		kfree_rcu(oe, rcu);  in ovl_dentry_release()
321 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_revalidate()  local
325 	for (i = 0; i < oe->numlower; i++) {  in ovl_dentry_revalidate()
326 		struct dentry *d = oe->lowerstack[i].dentry;  in ovl_dentry_revalidate()
344 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_dentry_weak_revalidate()  local
348 	for (i = 0; i < oe->numlower; i++) {  in ovl_dentry_weak_revalidate()
349 		struct dentry *d = oe->lowerstack[i].dentry;  in ovl_dentry_weak_revalidate()
377 	struct ovl_entry *oe = kzalloc(size, GFP_KERNEL);  in ovl_alloc_entry()  local
379 	if (oe)  in ovl_alloc_entry()
380 		oe->numlower = numlower;  in ovl_alloc_entry()
382 	return oe;  in ovl_alloc_entry()
429 	struct ovl_entry *oe = dentry->d_fsdata;  in ovl_path_next()  local
435 			return oe->numlower ? 1 : -1;  in ovl_path_next()
438 	BUG_ON(idx > oe->numlower);  in ovl_path_next()
439 	*path = oe->lowerstack[idx - 1];  in ovl_path_next()
441 	return (idx < oe->numlower) ? idx + 1 : -1;  in ovl_path_next()
447 	struct ovl_entry *oe;  in ovl_lookup()  local
541 	oe = ovl_alloc_entry(ctr);  in ovl_lookup()
543 	if (!oe)  in ovl_lookup()
553 				      oe);  in ovl_lookup()
559 	oe->opaque = upperopaque;  in ovl_lookup()
560 	oe->__upperdentry = upperdentry;  in ovl_lookup()
561 	memcpy(oe->lowerstack, stack, sizeof(struct path) * ctr);  in ovl_lookup()
563 	dentry->d_fsdata = oe;  in ovl_lookup()
569 	kfree(oe);  in ovl_lookup()
953 	struct ovl_entry *oe;  in ovl_fill_super()  local
1125 	oe = ovl_alloc_entry(numlower);  in ovl_fill_super()
1126 	if (!oe)  in ovl_fill_super()
1129 	root_dentry = d_make_root(ovl_new_inode(sb, S_IFDIR, oe));  in ovl_fill_super()
1139 	oe->__upperdentry = upperpath.dentry;  in ovl_fill_super()
1141 		oe->lowerstack[i].dentry = stack[i].dentry;  in ovl_fill_super()
1142 		oe->lowerstack[i].mnt = ufs->lower_mnt[i];  in ovl_fill_super()
1146 	root_dentry->d_fsdata = oe;  in ovl_fill_super()
1159 	kfree(oe);  in ovl_fill_super()