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
288 		ret = cachefiles_unlink(cache, object, dir, rep, why);  in cachefiles_bury_object()
296 	_debug("move stale object to graveyard");  in cachefiles_bury_object()
340 		trace_cachefiles_vfs_error(object, d_inode(cache->graveyard),  in cachefiles_bury_object()
392 		trace_cachefiles_rename(object, d_inode(rep)->i_ino, why);  in cachefiles_bury_object()
397 			trace_cachefiles_vfs_error(object, d_inode(dir), ret,  in cachefiles_bury_object()
404 	__cachefiles_unmark_inode_in_use(object, d_inode(rep));  in cachefiles_bury_object()
414 int cachefiles_delete_object(struct cachefiles_object *object,  in cachefiles_delete_object()  argument
417 	struct cachefiles_volume *volume = object->volume;  in cachefiles_delete_object()
418 	struct dentry *dentry = object->file->f_path.dentry;  in cachefiles_delete_object()
419 	struct dentry *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_delete_object()
422 	_enter(",OBJ%x{%pD}", object->debug_id, object->file);  in cachefiles_delete_object()
428 		ret = cachefiles_unlink(volume->cache, object, fan, dentry, why);  in cachefiles_delete_object()
435  * time comes to discard the object from memory.
437 struct file *cachefiles_create_tmpfile(struct cachefiles_object *object)  in cachefiles_create_tmpfile()  argument
439 	struct cachefiles_volume *volume = object->volume;  in cachefiles_create_tmpfile()
442 	struct dentry *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_create_tmpfile()
460 		trace_cachefiles_vfs_error(object, d_inode(fan), ret,  in cachefiles_create_tmpfile()
463 			cachefiles_io_error_obj(object, "Failed to create tmpfile");  in cachefiles_create_tmpfile()
467 	trace_cachefiles_tmpfile(object, file_inode(file));  in cachefiles_create_tmpfile()
470 	if (!cachefiles_mark_inode_in_use(object, file_inode(file)))  in cachefiles_create_tmpfile()
473 	ret = cachefiles_ondemand_init_object(object);  in cachefiles_create_tmpfile()
477 	ni_size = object->cookie->object_size;  in cachefiles_create_tmpfile()
481 		trace_cachefiles_trunc(object, file_inode(file), 0, ni_size,  in cachefiles_create_tmpfile()
488 				object, file_inode(file), ret,  in cachefiles_create_tmpfile()
506 	cachefiles_do_unmark_inode_in_use(object, file_inode(file));  in cachefiles_create_tmpfile()
516 static bool cachefiles_create_file(struct cachefiles_object *object)  in cachefiles_create_file()  argument
521 	ret = cachefiles_has_space(object->volume->cache, 1, 0,  in cachefiles_create_file()
526 	file = cachefiles_create_tmpfile(object);  in cachefiles_create_file()
530 	set_bit(FSCACHE_COOKIE_NEEDS_UPDATE, &object->cookie->flags);  in cachefiles_create_file()
531 	set_bit(CACHEFILES_OBJECT_USING_TMPFILE, &object->flags);  in cachefiles_create_file()
533 	object->file = file;  in cachefiles_create_file()
541 static bool cachefiles_open_file(struct cachefiles_object *object,  in cachefiles_open_file()  argument
544 	struct cachefiles_cache *cache = object->volume->cache;  in cachefiles_open_file()
551 	if (!cachefiles_mark_inode_in_use(object, d_inode(dentry))) {  in cachefiles_open_file()
565 		trace_cachefiles_vfs_error(object, d_backing_inode(dentry),  in cachefiles_open_file()
578 	ret = cachefiles_ondemand_init_object(object);  in cachefiles_open_file()
582 	ret = cachefiles_check_auxdata(object, file);  in cachefiles_open_file()
586 	clear_bit(FSCACHE_COOKIE_NO_DATA_TO_READ, &object->cookie->flags);  in cachefiles_open_file()
588 	object->file = file;  in cachefiles_open_file()
590 	/* Always update the atime on an object we've just looked up (this is  in cachefiles_open_file()
598 	fscache_cookie_lookup_negative(object->cookie);  in cachefiles_open_file()
599 	cachefiles_unmark_inode_in_use(object, file);  in cachefiles_open_file()
602 		return cachefiles_create_file(object);  in cachefiles_open_file()
608 	cachefiles_do_unmark_inode_in_use(object, d_inode(dentry));  in cachefiles_open_file()
613  * walk from the parent object to the child object through the backing
616 bool cachefiles_look_up_object(struct cachefiles_object *object)  in cachefiles_look_up_object()  argument
618 	struct cachefiles_volume *volume = object->volume;  in cachefiles_look_up_object()
619 	struct dentry *dentry, *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_look_up_object()
622 	_enter("OBJ%x,%s,", object->debug_id, object->d_name);  in cachefiles_look_up_object()
628 						      &QSTR(object->d_name), fan);  in cachefiles_look_up_object()
631 	trace_cachefiles_lookup(object, fan, dentry);  in cachefiles_look_up_object()
636 			cachefiles_io_error_obj(object, "Lookup failed");  in cachefiles_look_up_object()
646 			ret = cachefiles_bury_object(volume->cache, object,  in cachefiles_look_up_object()
655 	ret = cachefiles_open_file(object, dentry);  in cachefiles_look_up_object()
660 	_leave(" = t [%lu]", file_inode(object->file)->i_ino);  in cachefiles_look_up_object()
664 	fscache_cookie_lookup_negative(object->cookie);  in cachefiles_look_up_object()
665 	return cachefiles_create_file(object);  in cachefiles_look_up_object()
672 			       struct cachefiles_object *object)  in cachefiles_commit_tmpfile()  argument
674 	struct cachefiles_volume *volume = object->volume;  in cachefiles_commit_tmpfile()
675 	struct dentry *dentry, *fan = volume->fanout[(u8)object->cookie->key_hash];  in cachefiles_commit_tmpfile()
679 	_enter(",%pD", object->file);  in cachefiles_commit_tmpfile()
683 		dentry = start_creating(&nop_mnt_idmap, fan, &QSTR(object->d_name));  in cachefiles_commit_tmpfile()
687 		trace_cachefiles_vfs_error(object, d_inode(fan), PTR_ERR(dentry),  in cachefiles_commit_tmpfile()
695 	 * races to create the object we are trying to create.  in cachefiles_commit_tmpfile()
698 		ret = cachefiles_unlink(volume->cache, object, fan, dentry,  in cachefiles_commit_tmpfile()
708 						&QSTR(object->d_name));  in cachefiles_commit_tmpfile()
712 			trace_cachefiles_vfs_error(object, d_inode(fan), PTR_ERR(dentry),  in cachefiles_commit_tmpfile()
721 		ret = vfs_link(object->file->f_path.dentry, &nop_mnt_idmap,  in cachefiles_commit_tmpfile()
724 		trace_cachefiles_vfs_error(object, d_inode(fan), ret,  in cachefiles_commit_tmpfile()
728 		trace_cachefiles_link(object, file_inode(object->file));  in cachefiles_commit_tmpfile()
729 		spin_lock(&object->lock);  in cachefiles_commit_tmpfile()
731 		clear_bit(CACHEFILES_OBJECT_USING_TMPFILE, &object->flags);  in cachefiles_commit_tmpfile()
732 		spin_unlock(&object->lock);  in cachefiles_commit_tmpfile()
783  * Cull an object if it's not in use
799 	/* check to see if someone is using this object */  in cachefiles_cull()
844  * Find out if an object is in use or not
846  * - returns -EBUSY or 0 to indicate whether an object is in use or not