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/*-
* Copyright (c) 2007 Rohit Jalan (rohitj@purpe.com)
* 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 unmodified, 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 AUTHOR ``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 AUTHOR 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 _TMPFS_UMA_H
#define _TMPFS_UMA_H
#include <vm/uma.h>
#define TMPFS_STRZONE_ZONECOUNT 7
#define TMPFS_STRZONE_STARTLEN (1 << 4)
struct tmpfs_mount;
struct tmpfs_str_zone {
uma_zone_t tsz_zone[TMPFS_STRZONE_ZONECOUNT];
};
void tmpfs_str_zone_create(struct tmpfs_str_zone *);
void tmpfs_str_zone_destroy(struct tmpfs_str_zone *);
static __inline char*
tmpfs_str_zone_alloc(struct tmpfs_str_zone *tsz, int flags, size_t len)
{
size_t i, zlen;
char *ptr;
MPASS(len <= (TMPFS_STRZONE_STARTLEN << (TMPFS_STRZONE_ZONECOUNT-1)));
i = 0;
zlen = TMPFS_STRZONE_STARTLEN;
while (len > zlen) {
++i;
zlen <<= 1;
}
ptr = (char *)uma_zalloc(tsz->tsz_zone[i], flags);
return ptr;
}
static __inline void
tmpfs_str_zone_free(struct tmpfs_str_zone *tsz, char *item, size_t len)
{
size_t i, zlen;
MPASS(len <= (TMPFS_STRZONE_STARTLEN << (TMPFS_STRZONE_ZONECOUNT-1)));
i = 0;
zlen = TMPFS_STRZONE_STARTLEN;
while (len > zlen) {
++i;
zlen <<= 1;
}
uma_zfree(tsz->tsz_zone[i], item);
}
#endif
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