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diff --git a/sys/fs/fuse/fuse_param.h b/sys/fs/fuse/fuse_param.h
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+++ b/sys/fs/fuse/fuse_param.h
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+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 2007-2009 Google Inc. and Amit Singh
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * 
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ *   copyright notice, this list of conditions and the following disclaimer
+ *   in the documentation and/or other materials provided with the
+ *   distribution.
+ * * Neither the name of Google Inc. nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $FreeBSD$ 
+ */
+
+#ifndef _FUSE_PARAM_H_
+#define _FUSE_PARAM_H_
+
+/*
+ * This is the prefix ("fuse" by default) of the name of a FUSE device node
+ * in devfs. The suffix is the device number. "/dev/fuse0" is the first FUSE
+ * device by default. If you change the prefix from the default to something
+ * else, the user-space FUSE library will need to know about it too.
+ */
+#define FUSE_DEVICE_BASENAME               "fuse"
+
+/*
+ * This is the number of /dev/fuse<n> nodes we will create. <n> goes from
+ * 0 to (FUSE_NDEVICES - 1).
+ */
+#define FUSE_NDEVICES                      16
+
+/*
+ * This is the default block size of the virtual storage devices that are
+ * implicitly implemented by the FUSE kernel extension. This can be changed
+ * on a per-mount basis (there's one such virtual device for each mount).
+ */
+#define FUSE_DEFAULT_BLOCKSIZE             4096
+
+/*
+ * This is default I/O size used while accessing the virtual storage devices.
+ * This can be changed on a per-mount basis.
+ */
+#define FUSE_DEFAULT_IOSIZE                4096
+
+#ifdef KERNEL
+
+/*
+ * This is the soft upper limit on the number of "request tickets" FUSE's
+ * user-kernel IPC layer can have for a given mount. This can be modified
+ * through the fuse.* sysctl interface.
+ */
+#define FUSE_DEFAULT_MAX_FREE_TICKETS      1024
+
+#define FUSE_DEFAULT_IOV_PERMANENT_BUFSIZE (1L << 19)
+#define FUSE_DEFAULT_IOV_CREDIT            16
+
+#endif
+
+#define FUSE_LINK_MAX                      UINT32_MAX
+
+#endif /* _FUSE_PARAM_H_ */