126 		struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_evict_inode()  local
131 			fuse_queue_forget(fc, fi->forget, fi->nodeid,  in fuse_evict_inode()
169 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_change_attributes_common()  local
174 	fi->attr_version = atomic64_inc_return(&fc->attr_version);  in fuse_change_attributes_common()
182 	inode->i_uid     = make_kuid(fc->user_ns, attr->uid);  in fuse_change_attributes_common()
183 	inode->i_gid     = make_kgid(fc->user_ns, attr->gid);  in fuse_change_attributes_common()
232 	if (!fc->default_permissions)  in fuse_change_attributes_common()
250 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_get_cache_mask()  local
252 	if (!fc->writeback_cache || !S_ISREG(inode->i_mode))  in fuse_get_cache_mask()
262 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_change_attributes()  local
311 			if (!fc->explicit_inval_data)  in fuse_change_attributes()
313 		} else if (fc->auto_inval_data) {  in fuse_change_attributes()
336 			    struct fuse_conn *fc)  in fuse_init_inode()  argument
361 	if (!fc->posix_acl)  in fuse_init_inode()
387 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_iget()  local
396 	if (fc->auto_submounts && (attr->flags & FUSE_ATTR_SUBMOUNT) &&  in fuse_iget()
402 		fuse_init_inode(inode, attr, fc);  in fuse_iget()
415 		if (!fc->writeback_cache || !S_ISREG(attr->mode))  in fuse_iget()
418 		fuse_init_inode(inode, attr, fc);  in fuse_iget()
436 struct inode *fuse_ilookup(struct fuse_conn *fc, u64 nodeid,  in fuse_ilookup()  argument
442 	WARN_ON(!rwsem_is_locked(&fc->killsb));  in fuse_ilookup()
443 	list_for_each_entry(fm_iter, &fc->mounts, fc_entry) {  in fuse_ilookup()
458 int fuse_reverse_inval_inode(struct fuse_conn *fc, u64 nodeid,  in fuse_reverse_inval_inode()  argument
466 	inode = fuse_ilookup(fc, nodeid, NULL);  in fuse_reverse_inval_inode()
472 	fi->attr_version = atomic64_inc_return(&fc->attr_version);  in fuse_reverse_inval_inode()
510 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_umount_begin()  local
512 	if (fc->no_force_umount)  in fuse_umount_begin()
515 	fuse_abort_conn(fc);  in fuse_umount_begin()
524 	if (fm->fc->conn_init) {  in fuse_send_destroy()
556 	if (!fuse_allow_current_process(fm->fc)) {  in fuse_statfs()
587 static void fuse_sync_fs_writes(struct fuse_conn *fc)  in fuse_sync_fs_writes()  argument
593 	spin_lock(&fc->lock);  in fuse_sync_fs_writes()
594 	bucket = rcu_dereference_protected(fc->curr_bucket, 1);  in fuse_sync_fs_writes()
599 		spin_unlock(&fc->lock);  in fuse_sync_fs_writes()
609 	rcu_assign_pointer(fc->curr_bucket, new_bucket);  in fuse_sync_fs_writes()
610 	spin_unlock(&fc->lock);  in fuse_sync_fs_writes()
628 	struct fuse_conn *fc = fm->fc;  in fuse_sync_fs()  local
644 	if (!fc->sync_fs)  in fuse_sync_fs()
647 	fuse_sync_fs_writes(fc);  in fuse_sync_fs()
659 		fc->sync_fs = 0;  in fuse_sync_fs()
794 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_show_options()  local
796 	if (fc->legacy_opts_show) {  in fuse_show_options()
798 			   from_kuid_munged(fc->user_ns, fc->user_id));  in fuse_show_options()
800 			   from_kgid_munged(fc->user_ns, fc->group_id));  in fuse_show_options()
801 		if (fc->default_permissions)  in fuse_show_options()
803 		if (fc->allow_other)  in fuse_show_options()
805 		if (fc->max_read != ~0)  in fuse_show_options()
806 			seq_printf(m, ",max_read=%u", fc->max_read);  in fuse_show_options()
811 	if (fc->dax_mode == FUSE_DAX_ALWAYS)  in fuse_show_options()
813 	else if (fc->dax_mode == FUSE_DAX_NEVER)  in fuse_show_options()
815 	else if (fc->dax_mode == FUSE_DAX_INODE_USER)  in fuse_show_options()
848 void fuse_conn_init(struct fuse_conn *fc, struct fuse_mount *fm,  in fuse_conn_init()  argument
852 	memset(fc, 0, sizeof(*fc));  in fuse_conn_init()
853 	spin_lock_init(&fc->lock);  in fuse_conn_init()
854 	spin_lock_init(&fc->bg_lock);  in fuse_conn_init()
855 	init_rwsem(&fc->killsb);  in fuse_conn_init()
856 	refcount_set(&fc->count, 1);  in fuse_conn_init()
857 	atomic_set(&fc->dev_count, 1);  in fuse_conn_init()
858 	init_waitqueue_head(&fc->blocked_waitq);  in fuse_conn_init()
859 	fuse_iqueue_init(&fc->iq, fiq_ops, fiq_priv);  in fuse_conn_init()
860 	INIT_LIST_HEAD(&fc->bg_queue);  in fuse_conn_init()
861 	INIT_LIST_HEAD(&fc->entry);  in fuse_conn_init()
862 	INIT_LIST_HEAD(&fc->devices);  in fuse_conn_init()
863 	atomic_set(&fc->num_waiting, 0);  in fuse_conn_init()
864 	fc->max_background = FUSE_DEFAULT_MAX_BACKGROUND;  in fuse_conn_init()
865 	fc->congestion_threshold = FUSE_DEFAULT_CONGESTION_THRESHOLD;  in fuse_conn_init()
866 	atomic64_set(&fc->khctr, 0);  in fuse_conn_init()
867 	fc->polled_files = RB_ROOT;  in fuse_conn_init()
868 	fc->blocked = 0;  in fuse_conn_init()
869 	fc->initialized = 0;  in fuse_conn_init()
870 	fc->connected = 1;  in fuse_conn_init()
871 	atomic64_set(&fc->attr_version, 1);  in fuse_conn_init()
872 	get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key));  in fuse_conn_init()
873 	fc->pid_ns = get_pid_ns(task_active_pid_ns(current));  in fuse_conn_init()
874 	fc->user_ns = get_user_ns(user_ns);  in fuse_conn_init()
875 	fc->max_pages = FUSE_DEFAULT_MAX_PAGES_PER_REQ;  in fuse_conn_init()
876 	fc->max_pages_limit = FUSE_MAX_MAX_PAGES;  in fuse_conn_init()
878 	INIT_LIST_HEAD(&fc->mounts);  in fuse_conn_init()
879 	list_add(&fm->fc_entry, &fc->mounts);  in fuse_conn_init()
880 	fm->fc = fc;  in fuse_conn_init()
884 void fuse_conn_put(struct fuse_conn *fc)  in fuse_conn_put()  argument
886 	if (refcount_dec_and_test(&fc->count)) {  in fuse_conn_put()
887 		struct fuse_iqueue *fiq = &fc->iq;  in fuse_conn_put()
891 			fuse_dax_conn_free(fc);  in fuse_conn_put()
894 		put_pid_ns(fc->pid_ns);  in fuse_conn_put()
895 		put_user_ns(fc->user_ns);  in fuse_conn_put()
896 		bucket = rcu_dereference_protected(fc->curr_bucket, 1);  in fuse_conn_put()
901 		fc->release(fc);  in fuse_conn_put()
906 struct fuse_conn *fuse_conn_get(struct fuse_conn *fc)  in fuse_conn_get()  argument
908 	refcount_inc(&fc->count);  in fuse_conn_get()
909 	return fc;  in fuse_conn_get()
932 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_get_dentry()  local
945 		if (!fc->export_support)  in fuse_get_dentry()
1039 	struct fuse_conn *fc = get_fuse_conn(child_inode);  in fuse_get_parent()  local
1045 	if (!fc->export_support)  in fuse_get_parent()
1108 static void process_init_limits(struct fuse_conn *fc, struct fuse_init_out *arg)  in process_init_limits()  argument
1118 	spin_lock(&fc->bg_lock);  in process_init_limits()
1120 		fc->max_background = arg->max_background;  in process_init_limits()
1122 		if (!cap_sys_admin && fc->max_background > max_user_bgreq)  in process_init_limits()
1123 			fc->max_background = max_user_bgreq;  in process_init_limits()
1126 		fc->congestion_threshold = arg->congestion_threshold;  in process_init_limits()
1129 		    fc->congestion_threshold > max_user_congthresh)  in process_init_limits()
1130 			fc->congestion_threshold = max_user_congthresh;  in process_init_limits()
1132 	spin_unlock(&fc->bg_lock);  in process_init_limits()
1144 	struct fuse_conn *fc = fm->fc;  in process_init_reply()  local
1154 		process_init_limits(fc, arg);  in process_init_reply()
1164 				fc->async_read = 1;  in process_init_reply()
1166 				fc->no_lock = 1;  in process_init_reply()
1169 					fc->no_flock = 1;  in process_init_reply()
1172 					fc->no_flock = 1;  in process_init_reply()
1175 				fc->atomic_o_trunc = 1;  in process_init_reply()
1179 					fc->export_support = 1;  in process_init_reply()
1182 				fc->big_writes = 1;  in process_init_reply()
1184 				fc->dont_mask = 1;  in process_init_reply()
1186 				fc->auto_inval_data = 1;  in process_init_reply()
1188 				fc->explicit_inval_data = 1;  in process_init_reply()
1190 				fc->do_readdirplus = 1;  in process_init_reply()
1192 					fc->readdirplus_auto = 1;  in process_init_reply()
1195 				fc->async_dio = 1;  in process_init_reply()
1197 				fc->writeback_cache = 1;  in process_init_reply()
1199 				fc->parallel_dirops = 1;  in process_init_reply()
1201 				fc->handle_killpriv = 1;  in process_init_reply()
1205 				fc->default_permissions = 1;  in process_init_reply()
1206 				fc->posix_acl = 1;  in process_init_reply()
1209 				fc->cache_symlinks = 1;  in process_init_reply()
1211 				fc->abort_err = 1;  in process_init_reply()
1213 				fc->max_pages =  in process_init_reply()
1214 					min_t(unsigned int, fc->max_pages_limit,  in process_init_reply()
1219 				    !fuse_dax_check_alignment(fc, arg->map_alignment)) {  in process_init_reply()
1223 					fc->inode_dax = 1;  in process_init_reply()
1226 				fc->handle_killpriv_v2 = 1;  in process_init_reply()
1230 				fc->setxattr_ext = 1;  in process_init_reply()
1232 				fc->init_security = 1;  in process_init_reply()
1234 				fc->create_supp_group = 1;  in process_init_reply()
1236 				fc->direct_io_relax = 1;  in process_init_reply()
1238 			ra_pages = fc->max_read / PAGE_SIZE;  in process_init_reply()
1239 			fc->no_lock = 1;  in process_init_reply()
1240 			fc->no_flock = 1;  in process_init_reply()
1245 		fc->minor = arg->minor;  in process_init_reply()
1246 		fc->max_write = arg->minor < 5 ? 4096 : arg->max_write;  in process_init_reply()
1247 		fc->max_write = max_t(unsigned, 4096, fc->max_write);  in process_init_reply()
1248 		fc->conn_init = 1;  in process_init_reply()
1253 		fc->conn_init = 0;  in process_init_reply()
1254 		fc->conn_error = 1;  in process_init_reply()
1257 	fuse_set_initialized(fc);  in process_init_reply()
1258 	wake_up_all(&fc->blocked_waitq);  in process_init_reply()
1285 	if (fm->fc->dax)  in fuse_send_init()
1287 	if (fuse_is_inode_dax_mode(fm->fc->dax_mode))  in fuse_send_init()
1290 	if (fm->fc->auto_submounts)  in fuse_send_init()
1316 void fuse_free_conn(struct fuse_conn *fc)  in fuse_free_conn()  argument
1318 	WARN_ON(!list_empty(&fc->devices));  in fuse_free_conn()
1319 	kfree_rcu(fc, rcu);  in fuse_free_conn()
1323 static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb)  in fuse_bdi_init()  argument
1337 	err = super_setup_bdi_name(sb, "%u:%u%s", MAJOR(fc->dev),  in fuse_bdi_init()
1338 				   MINOR(fc->dev), suffix);  in fuse_bdi_init()
1385 void fuse_dev_install(struct fuse_dev *fud, struct fuse_conn *fc)  in fuse_dev_install()  argument
1387 	fud->fc = fuse_conn_get(fc);  in fuse_dev_install()
1388 	spin_lock(&fc->lock);  in fuse_dev_install()
1389 	list_add_tail(&fud->entry, &fc->devices);  in fuse_dev_install()
1390 	spin_unlock(&fc->lock);  in fuse_dev_install()
1394 struct fuse_dev *fuse_dev_alloc_install(struct fuse_conn *fc)  in fuse_dev_alloc_install()  argument
1402 	fuse_dev_install(fud, fc);  in fuse_dev_alloc_install()
1409 	struct fuse_conn *fc = fud->fc;  in fuse_dev_free()  local
1411 	if (fc) {  in fuse_dev_free()
1412 		spin_lock(&fc->lock);  in fuse_dev_free()
1414 		spin_unlock(&fc->lock);  in fuse_dev_free()
1416 		fuse_conn_put(fc);  in fuse_dev_free()
1504 	struct fuse_conn *fc = get_fuse_conn(&mp_fi->inode);  in fuse_get_tree_submount()  local
1512 	fm->fc = fuse_conn_get(fc);  in fuse_get_tree_submount()
1527 	down_write(&fc->killsb);  in fuse_get_tree_submount()
1528 	list_add_tail(&fm->fc_entry, &fc->mounts);  in fuse_get_tree_submount()
1529 	up_write(&fc->killsb);  in fuse_get_tree_submount()
1552 	struct fuse_conn *fc = fm->fc;  in fuse_fill_super_common()  local
1561 	rcu_assign_pointer(fc->curr_bucket, fuse_sync_bucket_alloc());  in fuse_fill_super_common()
1578 		err = fuse_dax_conn_alloc(fc, ctx->dax_mode, ctx->dax_dev);  in fuse_fill_super_common()
1585 		fud = fuse_dev_alloc_install(fc);  in fuse_fill_super_common()
1590 	fc->dev = sb->s_dev;  in fuse_fill_super_common()
1592 	err = fuse_bdi_init(fc, sb);  in fuse_fill_super_common()
1598 		fc->dont_mask = 1;  in fuse_fill_super_common()
1601 	fc->default_permissions = ctx->default_permissions;  in fuse_fill_super_common()
1602 	fc->allow_other = ctx->allow_other;  in fuse_fill_super_common()
1603 	fc->user_id = ctx->user_id;  in fuse_fill_super_common()
1604 	fc->group_id = ctx->group_id;  in fuse_fill_super_common()
1605 	fc->legacy_opts_show = ctx->legacy_opts_show;  in fuse_fill_super_common()
1606 	fc->max_read = max_t(unsigned int, 4096, ctx->max_read);  in fuse_fill_super_common()
1607 	fc->destroy = ctx->destroy;  in fuse_fill_super_common()
1608 	fc->no_control = ctx->no_control;  in fuse_fill_super_common()
1609 	fc->no_force_umount = ctx->no_force_umount;  in fuse_fill_super_common()
1625 	err = fuse_ctl_add_conn(fc);  in fuse_fill_super_common()
1629 	list_add_tail(&fc->entry, &fuse_conn_list);  in fuse_fill_super_common()
1644 		fuse_dax_conn_free(fc);  in fuse_fill_super_common()
1696 	struct fuse_conn *fc;  in fuse_get_tree()  local
1701 	fc = kmalloc(sizeof(*fc), GFP_KERNEL);  in fuse_get_tree()
1702 	if (!fc)  in fuse_get_tree()
1707 		kfree(fc);  in fuse_get_tree()
1711 	fuse_conn_init(fc, fm, fsc->user_ns, &fuse_dev_fiq_ops, NULL);  in fuse_get_tree()
1712 	fc->release = fuse_free_conn;  in fuse_get_tree()
1737 		fsc->sget_key = fud->fc;  in fuse_get_tree()
1789 	struct fuse_conn *fc = fm->fc;  in fuse_mount_remove()  local
1792 	down_write(&fc->killsb);  in fuse_mount_remove()
1794 	if (list_empty(&fc->mounts))  in fuse_mount_remove()
1796 	up_write(&fc->killsb);  in fuse_mount_remove()
1804 	struct fuse_conn *fc = fm->fc;  in fuse_conn_destroy()  local
1806 	if (fc->destroy)  in fuse_conn_destroy()
1809 	fuse_abort_conn(fc);  in fuse_conn_destroy()
1810 	fuse_wait_aborted(fc);  in fuse_conn_destroy()
1812 	if (!list_empty(&fc->entry)) {  in fuse_conn_destroy()
1814 		list_del(&fc->entry);  in fuse_conn_destroy()
1815 		fuse_ctl_remove_conn(fc);  in fuse_conn_destroy()
1835 	fuse_conn_put(fm->fc);  in fuse_mount_destroy()