84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/* $NetBSD: chfs_vnode_cache.c,v 1.3 2012/10/19 12:44:39 ttoth Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2010 Department of Software Engineering,
|
|
* University of Szeged, Hungary
|
|
* Copyright (C) 2010 Tamas Toth <ttoth@inf.u-szeged.hu>
|
|
* Copyright (C) 2010 Adam Hoka <ahoka@NetBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by the Department of Software Engineering, University of Szeged, Hungary
|
|
*
|
|
* 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 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.
|
|
*/
|
|
|
|
#include "chfs.h"
|
|
#include <sys/pool.h>
|
|
|
|
/* vnode cache is a hashtable for vnodes */
|
|
|
|
/* chfs_vnocache_hash_init - initializing the hashtable */
|
|
struct chfs_vnode_cache **
|
|
chfs_vnocache_hash_init(void)
|
|
{
|
|
return kmem_zalloc(VNODECACHE_SIZE *
|
|
sizeof(struct chfs_vnode_cache *), KM_SLEEP);
|
|
}
|
|
|
|
/*
|
|
* chfs_vnode_cache_get - get a vnode_cache from the hashtable
|
|
* Returns the vnode_cache.
|
|
*/
|
|
struct chfs_vnode_cache *
|
|
chfs_vnode_cache_get(struct chfs_mount *chmp, ino_t vno)
|
|
{
|
|
struct chfs_vnode_cache* ret;
|
|
|
|
KASSERT(mutex_owned(&chmp->chm_lock_vnocache));
|
|
|
|
ret = chmp->chm_vnocache_hash[vno % VNODECACHE_SIZE];
|
|
|
|
if (ret == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
while (ret && ret->vno < vno) {
|
|
ret = ret->next;
|
|
}
|
|
|
|
if (ret && ret->vno != vno) {
|
|
ret = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* chfs_vnode_cache_add - add a vnode_cache to the hashtable */
|
|
void
|
|
chfs_vnode_cache_add(struct chfs_mount *chmp,
|
|
struct chfs_vnode_cache* new)
|
|
{
|
|
struct chfs_vnode_cache** prev;
|
|
|
|
KASSERT(mutex_owned(&chmp->chm_lock_vnocache));
|
|
|
|
if (!new->vno) {
|
|
new->vno = ++chmp->chm_max_vno;
|
|
}
|
|
|
|
prev = &chmp->chm_vnocache_hash[new->vno % VNODECACHE_SIZE];
|
|
|
|
while ((*prev) && (*prev)->vno < new->vno) {
|
|
prev = &((*prev)->next);
|
|
}
|
|
new->next = *prev;
|
|
*prev = new;
|
|
}
|
|
|
|
/* chfs_vnode_cache_remove - removes a vnode_cache from the hashtable */
|
|
void
|
|
chfs_vnode_cache_remove(struct chfs_mount *chmp,
|
|
struct chfs_vnode_cache* old)
|
|
{
|
|
struct chfs_vnode_cache** prev;
|
|
|
|
KASSERT(mutex_owned(&chmp->chm_lock_vnocache));
|
|
|
|
prev = &chmp->chm_vnocache_hash[old->vno % VNODECACHE_SIZE];
|
|
while ((*prev) && (*prev)->vno < old->vno) {
|
|
prev = &(*prev)->next;
|
|
}
|
|
|
|
if ((*prev) == old) {
|
|
*prev = old->next;
|
|
}
|
|
|
|
if (old->state != VNO_STATE_READING &&
|
|
old->state != VNO_STATE_CLEARING) {
|
|
chfs_vnode_cache_free(old);
|
|
}
|
|
}
|
|
|
|
/* chfs_vnocache_hash_destroy - destroying the vnode cache */
|
|
void
|
|
chfs_vnocache_hash_destroy(struct chfs_vnode_cache **hash)
|
|
{
|
|
struct chfs_vnode_cache *this, *next;
|
|
int i;
|
|
|
|
/* free every row */
|
|
for (i = 0; i < VNODECACHE_SIZE; i++) {
|
|
this = hash[i];
|
|
while (this) {
|
|
next = this->next;
|
|
chfs_vnode_cache_free(this);
|
|
this = next;
|
|
}
|
|
hash[i] = NULL;
|
|
}
|
|
}
|
|
|