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()
168 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_change_attributes_common()  local
173 	fi->attr_version = atomic64_inc_return(&fc->attr_version);  in fuse_change_attributes_common()
180 	inode->i_uid     = make_kuid(fc->user_ns, attr->uid);  in fuse_change_attributes_common()
181 	inode->i_gid     = make_kgid(fc->user_ns, attr->gid);  in fuse_change_attributes_common()
212 	if (!fc->default_permissions)  in fuse_change_attributes_common()
230 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_get_cache_mask()  local
232 	if (!fc->writeback_cache || !S_ISREG(inode->i_mode))  in fuse_get_cache_mask()
241 	struct fuse_conn *fc = get_fuse_conn(inode);  in fuse_change_attributes()  local
290 			if (!fc->explicit_inval_data)  in fuse_change_attributes()
292 		} else if (fc->auto_inval_data) {  in fuse_change_attributes()
360 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_iget()  local
369 	if (fc->auto_submounts && (attr->flags & FUSE_ATTR_SUBMOUNT) &&  in fuse_iget()
388 		if (!fc->writeback_cache || !S_ISREG(attr->mode))  in fuse_iget()
409 struct inode *fuse_ilookup(struct fuse_conn *fc, u64 nodeid,  in fuse_ilookup()  argument
415 	WARN_ON(!rwsem_is_locked(&fc->killsb));  in fuse_ilookup()
416 	list_for_each_entry(fm_iter, &fc->mounts, fc_entry) {  in fuse_ilookup()
431 int fuse_reverse_inval_inode(struct fuse_conn *fc, u64 nodeid,  in fuse_reverse_inval_inode()  argument
439 	inode = fuse_ilookup(fc, nodeid, NULL);  in fuse_reverse_inval_inode()
445 	fi->attr_version = atomic64_inc_return(&fc->attr_version);  in fuse_reverse_inval_inode()
483 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_umount_begin()  local
485 	if (fc->no_force_umount)  in fuse_umount_begin()
488 	fuse_abort_conn(fc);  in fuse_umount_begin()
497 	if (fm->fc->conn_init) {  in fuse_send_destroy()
529 	if (!fuse_allow_current_process(fm->fc)) {  in fuse_statfs()
560 static void fuse_sync_fs_writes(struct fuse_conn *fc)  in fuse_sync_fs_writes()  argument
566 	spin_lock(&fc->lock);  in fuse_sync_fs_writes()
567 	bucket = rcu_dereference_protected(fc->curr_bucket, 1);  in fuse_sync_fs_writes()
572 		spin_unlock(&fc->lock);  in fuse_sync_fs_writes()
582 	rcu_assign_pointer(fc->curr_bucket, new_bucket);  in fuse_sync_fs_writes()
583 	spin_unlock(&fc->lock);  in fuse_sync_fs_writes()
601 	struct fuse_conn *fc = fm->fc;  in fuse_sync_fs()  local
617 	if (!fc->sync_fs)  in fuse_sync_fs()
620 	fuse_sync_fs_writes(fc);  in fuse_sync_fs()
632 		fc->sync_fs = 0;  in fuse_sync_fs()
767 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_show_options()  local
769 	if (fc->legacy_opts_show) {  in fuse_show_options()
771 			   from_kuid_munged(fc->user_ns, fc->user_id));  in fuse_show_options()
773 			   from_kgid_munged(fc->user_ns, fc->group_id));  in fuse_show_options()
774 		if (fc->default_permissions)  in fuse_show_options()
776 		if (fc->allow_other)  in fuse_show_options()
778 		if (fc->max_read != ~0)  in fuse_show_options()
779 			seq_printf(m, ",max_read=%u", fc->max_read);  in fuse_show_options()
784 	if (fc->dax_mode == FUSE_DAX_ALWAYS)  in fuse_show_options()
786 	else if (fc->dax_mode == FUSE_DAX_NEVER)  in fuse_show_options()
788 	else if (fc->dax_mode == FUSE_DAX_INODE_USER)  in fuse_show_options()
821 void fuse_conn_init(struct fuse_conn *fc, struct fuse_mount *fm,  in fuse_conn_init()  argument
825 	memset(fc, 0, sizeof(*fc));  in fuse_conn_init()
826 	spin_lock_init(&fc->lock);  in fuse_conn_init()
827 	spin_lock_init(&fc->bg_lock);  in fuse_conn_init()
828 	init_rwsem(&fc->killsb);  in fuse_conn_init()
829 	refcount_set(&fc->count, 1);  in fuse_conn_init()
830 	atomic_set(&fc->dev_count, 1);  in fuse_conn_init()
831 	init_waitqueue_head(&fc->blocked_waitq);  in fuse_conn_init()
832 	fuse_iqueue_init(&fc->iq, fiq_ops, fiq_priv);  in fuse_conn_init()
833 	INIT_LIST_HEAD(&fc->bg_queue);  in fuse_conn_init()
834 	INIT_LIST_HEAD(&fc->entry);  in fuse_conn_init()
835 	INIT_LIST_HEAD(&fc->devices);  in fuse_conn_init()
836 	atomic_set(&fc->num_waiting, 0);  in fuse_conn_init()
837 	fc->max_background = FUSE_DEFAULT_MAX_BACKGROUND;  in fuse_conn_init()
838 	fc->congestion_threshold = FUSE_DEFAULT_CONGESTION_THRESHOLD;  in fuse_conn_init()
839 	atomic64_set(&fc->khctr, 0);  in fuse_conn_init()
840 	fc->polled_files = RB_ROOT;  in fuse_conn_init()
841 	fc->blocked = 0;  in fuse_conn_init()
842 	fc->initialized = 0;  in fuse_conn_init()
843 	fc->connected = 1;  in fuse_conn_init()
844 	atomic64_set(&fc->attr_version, 1);  in fuse_conn_init()
845 	get_random_bytes(&fc->scramble_key, sizeof(fc->scramble_key));  in fuse_conn_init()
846 	fc->pid_ns = get_pid_ns(task_active_pid_ns(current));  in fuse_conn_init()
847 	fc->user_ns = get_user_ns(user_ns);  in fuse_conn_init()
848 	fc->max_pages = FUSE_DEFAULT_MAX_PAGES_PER_REQ;  in fuse_conn_init()
849 	fc->max_pages_limit = FUSE_MAX_MAX_PAGES;  in fuse_conn_init()
851 	INIT_LIST_HEAD(&fc->mounts);  in fuse_conn_init()
852 	list_add(&fm->fc_entry, &fc->mounts);  in fuse_conn_init()
853 	fm->fc = fc;  in fuse_conn_init()
857 void fuse_conn_put(struct fuse_conn *fc)  in fuse_conn_put()  argument
859 	if (refcount_dec_and_test(&fc->count)) {  in fuse_conn_put()
860 		struct fuse_iqueue *fiq = &fc->iq;  in fuse_conn_put()
864 			fuse_dax_conn_free(fc);  in fuse_conn_put()
867 		put_pid_ns(fc->pid_ns);  in fuse_conn_put()
868 		put_user_ns(fc->user_ns);  in fuse_conn_put()
869 		bucket = rcu_dereference_protected(fc->curr_bucket, 1);  in fuse_conn_put()
874 		fc->release(fc);  in fuse_conn_put()
879 struct fuse_conn *fuse_conn_get(struct fuse_conn *fc)  in fuse_conn_get()  argument
881 	refcount_inc(&fc->count);  in fuse_conn_get()
882 	return fc;  in fuse_conn_get()
905 	struct fuse_conn *fc = get_fuse_conn_super(sb);  in fuse_get_dentry()  local
918 		if (!fc->export_support)  in fuse_get_dentry()
1012 	struct fuse_conn *fc = get_fuse_conn(child_inode);  in fuse_get_parent()  local
1018 	if (!fc->export_support)  in fuse_get_parent()
1081 static void process_init_limits(struct fuse_conn *fc, struct fuse_init_out *arg)  in process_init_limits()  argument
1091 	spin_lock(&fc->bg_lock);  in process_init_limits()
1093 		fc->max_background = arg->max_background;  in process_init_limits()
1095 		if (!cap_sys_admin && fc->max_background > max_user_bgreq)  in process_init_limits()
1096 			fc->max_background = max_user_bgreq;  in process_init_limits()
1099 		fc->congestion_threshold = arg->congestion_threshold;  in process_init_limits()
1102 		    fc->congestion_threshold > max_user_congthresh)  in process_init_limits()
1103 			fc->congestion_threshold = max_user_congthresh;  in process_init_limits()
1105 	spin_unlock(&fc->bg_lock);  in process_init_limits()
1117 	struct fuse_conn *fc = fm->fc;  in process_init_reply()  local
1127 		process_init_limits(fc, arg);  in process_init_reply()
1134 				fc->async_read = 1;  in process_init_reply()
1136 				fc->no_lock = 1;  in process_init_reply()
1139 					fc->no_flock = 1;  in process_init_reply()
1142 					fc->no_flock = 1;  in process_init_reply()
1145 				fc->atomic_o_trunc = 1;  in process_init_reply()
1149 					fc->export_support = 1;  in process_init_reply()
1152 				fc->big_writes = 1;  in process_init_reply()
1154 				fc->dont_mask = 1;  in process_init_reply()
1156 				fc->auto_inval_data = 1;  in process_init_reply()
1158 				fc->explicit_inval_data = 1;  in process_init_reply()
1160 				fc->do_readdirplus = 1;  in process_init_reply()
1162 					fc->readdirplus_auto = 1;  in process_init_reply()
1165 				fc->async_dio = 1;  in process_init_reply()
1167 				fc->writeback_cache = 1;  in process_init_reply()
1169 				fc->parallel_dirops = 1;  in process_init_reply()
1171 				fc->handle_killpriv = 1;  in process_init_reply()
1175 				fc->default_permissions = 1;  in process_init_reply()
1176 				fc->posix_acl = 1;  in process_init_reply()
1180 				fc->cache_symlinks = 1;  in process_init_reply()
1182 				fc->abort_err = 1;  in process_init_reply()
1184 				fc->max_pages =  in process_init_reply()
1185 					min_t(unsigned int, fc->max_pages_limit,  in process_init_reply()
1190 				    !fuse_dax_check_alignment(fc, arg->map_alignment)) {  in process_init_reply()
1194 					fc->inode_dax = 1;  in process_init_reply()
1197 				fc->handle_killpriv_v2 = 1;  in process_init_reply()
1201 				fc->setxattr_ext = 1;  in process_init_reply()
1203 				fc->init_security = 1;  in process_init_reply()
1205 			ra_pages = fc->max_read / PAGE_SIZE;  in process_init_reply()
1206 			fc->no_lock = 1;  in process_init_reply()
1207 			fc->no_flock = 1;  in process_init_reply()
1212 		fc->minor = arg->minor;  in process_init_reply()
1213 		fc->max_write = arg->minor < 5 ? 4096 : arg->max_write;  in process_init_reply()
1214 		fc->max_write = max_t(unsigned, 4096, fc->max_write);  in process_init_reply()
1215 		fc->conn_init = 1;  in process_init_reply()
1220 		fc->conn_init = 0;  in process_init_reply()
1221 		fc->conn_error = 1;  in process_init_reply()
1224 	fuse_set_initialized(fc);  in process_init_reply()
1225 	wake_up_all(&fc->blocked_waitq);  in process_init_reply()
1251 	if (fm->fc->dax)  in fuse_send_init()
1253 	if (fuse_is_inode_dax_mode(fm->fc->dax_mode))  in fuse_send_init()
1256 	if (fm->fc->auto_submounts)  in fuse_send_init()
1282 void fuse_free_conn(struct fuse_conn *fc)  in fuse_free_conn()  argument
1284 	WARN_ON(!list_empty(&fc->devices));  in fuse_free_conn()
1285 	kfree_rcu(fc, rcu);  in fuse_free_conn()
1289 static int fuse_bdi_init(struct fuse_conn *fc, struct super_block *sb)  in fuse_bdi_init()  argument
1303 	err = super_setup_bdi_name(sb, "%u:%u%s", MAJOR(fc->dev),  in fuse_bdi_init()
1304 				   MINOR(fc->dev), suffix);  in fuse_bdi_init()
1351 void fuse_dev_install(struct fuse_dev *fud, struct fuse_conn *fc)  in fuse_dev_install()  argument
1353 	fud->fc = fuse_conn_get(fc);  in fuse_dev_install()
1354 	spin_lock(&fc->lock);  in fuse_dev_install()
1355 	list_add_tail(&fud->entry, &fc->devices);  in fuse_dev_install()
1356 	spin_unlock(&fc->lock);  in fuse_dev_install()
1360 struct fuse_dev *fuse_dev_alloc_install(struct fuse_conn *fc)  in fuse_dev_alloc_install()  argument
1368 	fuse_dev_install(fud, fc);  in fuse_dev_alloc_install()
1375 	struct fuse_conn *fc = fud->fc;  in fuse_dev_free()  local
1377 	if (fc) {  in fuse_dev_free()
1378 		spin_lock(&fc->lock);  in fuse_dev_free()
1380 		spin_unlock(&fc->lock);  in fuse_dev_free()
1382 		fuse_conn_put(fc);  in fuse_dev_free()
1475 	struct fuse_conn *fc = get_fuse_conn(&mp_fi->inode);  in fuse_get_tree_submount()  local
1483 	fm->fc = fuse_conn_get(fc);  in fuse_get_tree_submount()
1498 	down_write(&fc->killsb);  in fuse_get_tree_submount()
1499 	list_add_tail(&fm->fc_entry, &fc->mounts);  in fuse_get_tree_submount()
1500 	up_write(&fc->killsb);  in fuse_get_tree_submount()
1523 	struct fuse_conn *fc = fm->fc;  in fuse_fill_super_common()  local
1532 	rcu_assign_pointer(fc->curr_bucket, fuse_sync_bucket_alloc());  in fuse_fill_super_common()
1549 		err = fuse_dax_conn_alloc(fc, ctx->dax_mode, ctx->dax_dev);  in fuse_fill_super_common()
1556 		fud = fuse_dev_alloc_install(fc);  in fuse_fill_super_common()
1561 	fc->dev = sb->s_dev;  in fuse_fill_super_common()
1563 	err = fuse_bdi_init(fc, sb);  in fuse_fill_super_common()
1569 		fc->dont_mask = 1;  in fuse_fill_super_common()
1572 	fc->default_permissions = ctx->default_permissions;  in fuse_fill_super_common()
1573 	fc->allow_other = ctx->allow_other;  in fuse_fill_super_common()
1574 	fc->user_id = ctx->user_id;  in fuse_fill_super_common()
1575 	fc->group_id = ctx->group_id;  in fuse_fill_super_common()
1576 	fc->legacy_opts_show = ctx->legacy_opts_show;  in fuse_fill_super_common()
1577 	fc->max_read = max_t(unsigned int, 4096, ctx->max_read);  in fuse_fill_super_common()
1578 	fc->destroy = ctx->destroy;  in fuse_fill_super_common()
1579 	fc->no_control = ctx->no_control;  in fuse_fill_super_common()
1580 	fc->no_force_umount = ctx->no_force_umount;  in fuse_fill_super_common()
1596 	err = fuse_ctl_add_conn(fc);  in fuse_fill_super_common()
1600 	list_add_tail(&fc->entry, &fuse_conn_list);  in fuse_fill_super_common()
1615 		fuse_dax_conn_free(fc);  in fuse_fill_super_common()
1667 	struct fuse_conn *fc;  in fuse_get_tree()  local
1672 	fc = kmalloc(sizeof(*fc), GFP_KERNEL);  in fuse_get_tree()
1673 	if (!fc)  in fuse_get_tree()
1678 		kfree(fc);  in fuse_get_tree()
1682 	fuse_conn_init(fc, fm, fsc->user_ns, &fuse_dev_fiq_ops, NULL);  in fuse_get_tree()
1683 	fc->release = fuse_free_conn;  in fuse_get_tree()
1708 		fsc->sget_key = fud->fc;  in fuse_get_tree()
1760 	struct fuse_conn *fc = fm->fc;  in fuse_mount_remove()  local
1763 	down_write(&fc->killsb);  in fuse_mount_remove()
1765 	if (list_empty(&fc->mounts))  in fuse_mount_remove()
1767 	up_write(&fc->killsb);  in fuse_mount_remove()
1775 	struct fuse_conn *fc = fm->fc;  in fuse_conn_destroy()  local
1777 	if (fc->destroy)  in fuse_conn_destroy()
1780 	fuse_abort_conn(fc);  in fuse_conn_destroy()
1781 	fuse_wait_aborted(fc);  in fuse_conn_destroy()
1783 	if (!list_empty(&fc->entry)) {  in fuse_conn_destroy()
1785 		list_del(&fc->entry);  in fuse_conn_destroy()
1786 		fuse_ctl_remove_conn(fc);  in fuse_conn_destroy()
1806 	fuse_conn_put(fm->fc);  in fuse_mount_destroy()