17 static bool __cachefiles_mark_inode_in_use(struct cachefiles_object *object,  in __cachefiles_mark_inode_in_use()  argument
24 		trace_cachefiles_mark_active(object, inode);  in __cachefiles_mark_inode_in_use()
27 		trace_cachefiles_mark_failed(object, inode);  in __cachefiles_mark_inode_in_use()
33 static bool cachefiles_mark_inode_in_use(struct cachefiles_object *object,  in cachefiles_mark_inode_in_use()  argument
39 	can_use = __cachefiles_mark_inode_in_use(object, inode);  in cachefiles_mark_inode_in_use()
47 static void __cachefiles_unmark_inode_in_use(struct cachefiles_object *object,  in __cachefiles_unmark_inode_in_use()  argument
51 	trace_cachefiles_mark_inactive(object, inode);  in __cachefiles_unmark_inode_in_use()
54 static void cachefiles_do_unmark_inode_in_use(struct cachefiles_object *object,  in cachefiles_do_unmark_inode_in_use()  argument
58 	__cachefiles_unmark_inode_in_use(object, inode);  in cachefiles_do_unmark_inode_in_use()
66 void cachefiles_unmark_inode_in_use(struct cachefiles_object *object,  in cachefiles_unmark_inode_in_use()  argument
69 	struct cachefiles_cache *cache = object->volume->cache;  in cachefiles_unmark_inode_in_use()
72 	cachefiles_do_unmark_inode_in_use(object, inode);  in cachefiles_unmark_inode_in_use()
74 	if (!test_bit(CACHEFILES_OBJECT_USING_TMPFILE, &object->flags)) {  in cachefiles_unmark_inode_in_use()
230 			     struct cachefiles_object *object,  in cachefiles_unlink()  argument
240 	trace_cachefiles_unlink(object, d_inode(dentry)->i_ino, why);  in cachefiles_unlink()
254 		trace_cachefiles_vfs_error(object, d_backing_inode(dir), ret,  in cachefiles_unlink()
260  * Delete an object representation from the cache
268 			   struct cachefiles_object *object,  in cachefiles_bury_object()  argument
289 		ret = cachefiles_unlink(cache, object, dir, rep, why);  in cachefiles_bury_object()
297 	_debug("move stale object to graveyard");  in cachefiles_bury_object()
364 		trace_cachefiles_rename(object, d_inode(rep)->i_ino, why);  in cachefiles_bury_object()
369 			trace_cachefiles_vfs_error(object, d_inode(dir), ret,  in cachefiles_bury_object()
376 	__cachefiles_unmark_inode_in_use(object, d_inode(rep));  in cachefiles_bury_object()
385 int cachefiles_delete_object(struct cachefiles_object *object,  in cachefiles_delete_object()  argument
388 	struct cachefiles_volume *volume = object->volume;  in cachefiles_delete_object()
389 	struct dentry *dentry = object->file->f_path.dentry;  in cachefiles_delete_object()
390 	struct dentry *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_delete_object()
393 	_enter(",OBJ%x{%pD}", object->debug_id, object->file);  in cachefiles_delete_object()
399 		ret = cachefiles_unlink(volume->cache, object, fan, dentry, why);  in cachefiles_delete_object()
406  * time comes to discard the object from memory.
408 struct file *cachefiles_create_tmpfile(struct cachefiles_object *object)  in cachefiles_create_tmpfile()  argument
410 	struct cachefiles_volume *volume = object->volume;  in cachefiles_create_tmpfile()
413 	struct dentry *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_create_tmpfile()
431 		trace_cachefiles_vfs_error(object, d_inode(fan), ret,  in cachefiles_create_tmpfile()
434 			cachefiles_io_error_obj(object, "Failed to create tmpfile");  in cachefiles_create_tmpfile()
438 	trace_cachefiles_tmpfile(object, file_inode(file));  in cachefiles_create_tmpfile()
441 	if (!cachefiles_mark_inode_in_use(object, file_inode(file)))  in cachefiles_create_tmpfile()
444 	ret = cachefiles_ondemand_init_object(object);  in cachefiles_create_tmpfile()
448 	ni_size = object->cookie->object_size;  in cachefiles_create_tmpfile()
452 		trace_cachefiles_trunc(object, file_inode(file), 0, ni_size,  in cachefiles_create_tmpfile()
459 				object, file_inode(file), ret,  in cachefiles_create_tmpfile()
477 	cachefiles_do_unmark_inode_in_use(object, file_inode(file));  in cachefiles_create_tmpfile()
487 static bool cachefiles_create_file(struct cachefiles_object *object)  in cachefiles_create_file()  argument
492 	ret = cachefiles_has_space(object->volume->cache, 1, 0,  in cachefiles_create_file()
497 	file = cachefiles_create_tmpfile(object);  in cachefiles_create_file()
501 	set_bit(FSCACHE_COOKIE_NEEDS_UPDATE, &object->cookie->flags);  in cachefiles_create_file()
502 	set_bit(CACHEFILES_OBJECT_USING_TMPFILE, &object->flags);  in cachefiles_create_file()
504 	object->file = file;  in cachefiles_create_file()
512 static bool cachefiles_open_file(struct cachefiles_object *object,  in cachefiles_open_file()  argument
515 	struct cachefiles_cache *cache = object->volume->cache;  in cachefiles_open_file()
522 	if (!cachefiles_mark_inode_in_use(object, d_inode(dentry))) {  in cachefiles_open_file()
536 		trace_cachefiles_vfs_error(object, d_backing_inode(dentry),  in cachefiles_open_file()
549 	ret = cachefiles_ondemand_init_object(object);  in cachefiles_open_file()
553 	ret = cachefiles_check_auxdata(object, file);  in cachefiles_open_file()
557 	clear_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &object->cookie->flags);  in cachefiles_open_file()
559 	object->file = file;  in cachefiles_open_file()
561 	/* Always update the atime on an object we've just looked up (this is  in cachefiles_open_file()
569 	fscache_cookie_lookup_negative(object->cookie);  in cachefiles_open_file()
570 	cachefiles_unmark_inode_in_use(object, file);  in cachefiles_open_file()
573 		return cachefiles_create_file(object);  in cachefiles_open_file()
579 	cachefiles_do_unmark_inode_in_use(object, d_inode(dentry));  in cachefiles_open_file()
584  * walk from the parent object to the child object through the backing
587 bool cachefiles_look_up_object(struct cachefiles_object *object)  in cachefiles_look_up_object()  argument
589 	struct cachefiles_volume *volume = object->volume;  in cachefiles_look_up_object()
590 	struct dentry *dentry, *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_look_up_object()
593 	_enter("OBJ%x,%s,", object->debug_id, object->d_name);  in cachefiles_look_up_object()
599 						      &QSTR(object->d_name), fan);  in cachefiles_look_up_object()
602 	trace_cachefiles_lookup(object, fan, dentry);  in cachefiles_look_up_object()
607 			cachefiles_io_error_obj(object, "Lookup failed");  in cachefiles_look_up_object()
617 			ret = cachefiles_bury_object(volume->cache, object,  in cachefiles_look_up_object()
626 	ret = cachefiles_open_file(object, dentry);  in cachefiles_look_up_object()
631 	_leave(" = t [%llu]", file_inode(object->file)->i_ino);  in cachefiles_look_up_object()
635 	fscache_cookie_lookup_negative(object->cookie);  in cachefiles_look_up_object()
636 	return cachefiles_create_file(object);  in cachefiles_look_up_object()
643 			       struct cachefiles_object *object)  in cachefiles_commit_tmpfile()  argument
645 	struct cachefiles_volume *volume = object->volume;  in cachefiles_commit_tmpfile()
646 	struct dentry *dentry, *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_commit_tmpfile()
650 	_enter(",%pD", object->file);  in cachefiles_commit_tmpfile()
654 		dentry = start_creating(&nop_mnt_idmap, fan, &QSTR(object->d_name));  in cachefiles_commit_tmpfile()
658 		trace_cachefiles_vfs_error(object, d_inode(fan), PTR_ERR(dentry),  in cachefiles_commit_tmpfile()
666 	 * races to create the object we are trying to create.  in cachefiles_commit_tmpfile()
669 		ret = cachefiles_unlink(volume->cache, object, fan, dentry,  in cachefiles_commit_tmpfile()
679 						&QSTR(object->d_name));  in cachefiles_commit_tmpfile()
683 			trace_cachefiles_vfs_error(object, d_inode(fan), PTR_ERR(dentry),  in cachefiles_commit_tmpfile()
692 		ret = vfs_link(object->file->f_path.dentry, &nop_mnt_idmap,  in cachefiles_commit_tmpfile()
695 		trace_cachefiles_vfs_error(object, d_inode(fan), ret,  in cachefiles_commit_tmpfile()
699 		trace_cachefiles_link(object, file_inode(object->file));  in cachefiles_commit_tmpfile()
700 		spin_lock(&object->lock);  in cachefiles_commit_tmpfile()
702 		clear_bit(CACHEFILES_OBJECT_USING_TMPFILE, &object->flags);  in cachefiles_commit_tmpfile()
703 		spin_unlock(&object->lock);  in cachefiles_commit_tmpfile()
754  * Cull an object if it's not in use
770 	/* check to see if someone is using this object */  in cachefiles_cull()
815  * Find out if an object is in use or not
817  * - returns -EBUSY or 0 to indicate whether an object is in use or not