1 // SPDX-License-Identifier: GPL-2.0-or-later
4  * Copyright (C) 2021 Red Hat, Inc. All Rights Reserved.
20 	struct cachefiles_cache *cache = vcookie->cache->cache_priv;  in cachefiles_acquire_volume()
22 	struct dentry *vdentry, *fan;  in cachefiles_acquire_volume()  local
33 	volume->vcookie = vcookie;  in cachefiles_acquire_volume()
34 	volume->cache = cache;  in cachefiles_acquire_volume()
35 	INIT_LIST_HEAD(&volume->cache_link);  in cachefiles_acquire_volume()
39 	len = vcookie->key[0];  in cachefiles_acquire_volume()
44 	memcpy(name + 1, vcookie->key + 1, len);  in cachefiles_acquire_volume()
48 	vdentry = cachefiles_get_directory(cache, cache->store, name, &is_new);  in cachefiles_acquire_volume()
51 	volume->dentry = vdentry;  in cachefiles_acquire_volume()
59 			if (ret != -ESTALE)  in cachefiles_acquire_volume()
61 			inode_lock_nested(d_inode(cache->store), I_MUTEX_PARENT);  in cachefiles_acquire_volume()
62 			cachefiles_bury_object(cache, NULL, cache->store, vdentry,  in cachefiles_acquire_volume()
64 			cachefiles_put_directory(volume->dentry);  in cachefiles_acquire_volume()
72 		fan = cachefiles_get_directory(cache, vdentry, name, NULL);  in cachefiles_acquire_volume()
73 		if (IS_ERR(fan))  in cachefiles_acquire_volume()
75 		volume->fanout[i] = fan;  in cachefiles_acquire_volume()
80 	vcookie->cache_priv = volume;  in cachefiles_acquire_volume()
81 	n_accesses = atomic_inc_return(&vcookie->n_accesses); /* Stop wakeups on dec-to-0 */  in cachefiles_acquire_volume()
82 	trace_fscache_access_volume(vcookie->debug_id, 0,  in cachefiles_acquire_volume()
83 				    refcount_read(&vcookie->ref),  in cachefiles_acquire_volume()
86 	spin_lock(&cache->object_list_lock);  in cachefiles_acquire_volume()
87 	list_add(&volume->cache_link, &volume->cache->volumes);  in cachefiles_acquire_volume()
88 	spin_unlock(&cache->object_list_lock);  in cachefiles_acquire_volume()
95 		cachefiles_put_directory(volume->fanout[i]);  in cachefiles_acquire_volume()
97 	cachefiles_put_directory(volume->dentry);  in cachefiles_acquire_volume()
114 	volume->vcookie->cache_priv = NULL;  in __cachefiles_free_volume()
117 		cachefiles_put_directory(volume->fanout[i]);  in __cachefiles_free_volume()
118 	cachefiles_put_directory(volume->dentry);  in __cachefiles_free_volume()
124 	struct cachefiles_volume *volume = vcookie->cache_priv;  in cachefiles_free_volume()
127 		spin_lock(&volume->cache->object_list_lock);  in cachefiles_free_volume()
128 		list_del_init(&volume->cache_link);  in cachefiles_free_volume()
129 		spin_unlock(&volume->cache->object_list_lock);  in cachefiles_free_volume()