zfs/include/os/freebsd/spl/sys/kmem_cache.h

/*
 * Copyright (c) 2020 iXsystems, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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 _SPL_KMEM_CACHE_H
#define	_SPL_KMEM_CACHE_H

#ifdef _KERNEL
#include <sys/taskq.h>

/* kmem move callback return values */
typedef enum kmem_cbrc {
	KMEM_CBRC_YES		= 0,	/* Object moved */
	KMEM_CBRC_NO		= 1,	/* Object not moved */
	KMEM_CBRC_LATER		= 2,	/* Object not moved, try again later */
	KMEM_CBRC_DONT_NEED	= 3,	/* Neither object is needed */
	KMEM_CBRC_DONT_KNOW	= 4,	/* Object unknown */
} kmem_cbrc_t;

extern void spl_kmem_cache_set_move(kmem_cache_t *,
    kmem_cbrc_t (*)(void *, void *, size_t, void *));

#define	kmem_cache_set_move(skc, move)	spl_kmem_cache_set_move(skc, move)

#endif /* _KERNEL */

#endif