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diff --git a/module/nvpair/nvpair_alloc_fixed.c b/module/nvpair/nvpair_alloc_fixed.c
deleted file mode 100644
index b1128ee..0000000
--- a/module/nvpair/nvpair_alloc_fixed.c
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * CDDL HEADER START
- *
- * The contents of this file are subject to the terms of the
- * Common Development and Distribution License (the "License").
- * You may not use this file except in compliance with the License.
- *
- * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
- * or http://www.opensolaris.org/os/licensing.
- * See the License for the specific language governing permissions
- * and limitations under the License.
- *
- * When distributing Covered Code, include this CDDL HEADER in each
- * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
- * If applicable, add the following below this CDDL HEADER, with the
- * fields enclosed by brackets "[]" replaced with your own identifying
- * information: Portions Copyright [yyyy] [name of copyright owner]
- *
- * CDDL HEADER END
- */
-
-/*
- * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
- * Use is subject to license terms.
- */
-
-#pragma ident	"%Z%%M%	%I%	%E% SMI"
-
-#include <sys/stropts.h>
-#include <sys/isa_defs.h>
-#include <sys/nvpair.h>
-#include <sys/sysmacros.h>
-#if defined(_KERNEL) && !defined(_BOOT)
-#include <sys/varargs.h>
-#else
-#include <stdarg.h>
-#include <strings.h>
-#endif
-
-/*
- * This allocator is very simple.
- *  - it uses a pre-allocated buffer for memory allocations.
- *  - it does _not_ free memory in the pre-allocated buffer.
- *
- * The reason for the selected implemention is simplicity.
- * This allocator is designed for the usage in interrupt context when
- * the caller may not wait for free memory.
- */
-
-/* pre-allocated buffer for memory allocations */
-typedef struct nvbuf {
-	uintptr_t	nvb_buf;	/* address of pre-allocated buffer */
-	uintptr_t 	nvb_lim;	/* limit address in the buffer */
-	uintptr_t	nvb_cur;	/* current address in the buffer */
-} nvbuf_t;
-
-/*
- * Initialize the pre-allocated buffer allocator. The caller needs to supply
- *
- *   buf	address of pre-allocated buffer
- *   bufsz	size of pre-allocated buffer
- *
- * nv_fixed_init() calculates the remaining members of nvbuf_t.
- */
-static int
-nv_fixed_init(nv_alloc_t *nva, va_list valist)
-{
-	uintptr_t base = va_arg(valist, uintptr_t);
-	uintptr_t lim = base + va_arg(valist, size_t);
-	nvbuf_t *nvb = (nvbuf_t *)P2ROUNDUP(base, sizeof (uintptr_t));
-
-	if (base == 0 || (uintptr_t)&nvb[1] > lim)
-		return (EINVAL);
-
-	nvb->nvb_buf = (uintptr_t)&nvb[0];
-	nvb->nvb_cur = (uintptr_t)&nvb[1];
-	nvb->nvb_lim = lim;
-	nva->nva_arg = nvb;
-
-	return (0);
-}
-
-static void *
-nv_fixed_alloc(nv_alloc_t *nva, size_t size)
-{
-	nvbuf_t *nvb = nva->nva_arg;
-	uintptr_t new = nvb->nvb_cur;
-
-	if (size == 0 || new + size > nvb->nvb_lim)
-		return (NULL);
-
-	nvb->nvb_cur = P2ROUNDUP(new + size, sizeof (uintptr_t));
-
-	return ((void *)new);
-}
-
-/*ARGSUSED*/
-static void
-nv_fixed_free(nv_alloc_t *nva, void *buf, size_t size)
-{
-	/* don't free memory in the pre-allocated buffer */
-}
-
-static void
-nv_fixed_reset(nv_alloc_t *nva)
-{
-	nvbuf_t *nvb = nva->nva_arg;
-
-	nvb->nvb_cur = (uintptr_t)&nvb[1];
-}
-
-const nv_alloc_ops_t nv_fixed_ops_def = {
-	nv_fixed_init,	/* nv_ao_init() */
-	NULL,		/* nv_ao_fini() */
-	nv_fixed_alloc,	/* nv_ao_alloc() */
-	nv_fixed_free,	/* nv_ao_free() */
-	nv_fixed_reset	/* nv_ao_reset() */
-};
-
-const nv_alloc_ops_t *nv_fixed_ops = &nv_fixed_ops_def;