5bb84bc84b
- Prefer '_' to ' ', as it results in more easily parsed results in memory monitoring tools such as vmstat. - Remove punctuation that is incompatible with using memory type names as file names, such as '/' characters. - Disambiguate some collisions by adding subsystem prefixes to some memory types. - Generally prefer lower case to upper case. - If the same type is defined in multiple architecture directories, attempt to use the same name in additional cases. Not all instances were caught in this change, so more work is required to finish this conversion. Similar changes are required for UMA zone names.
130 lines
3.7 KiB
C
130 lines
3.7 KiB
C
/* $NetBSD: ntfs_ihash.c,v 1.5 1999/09/30 16:56:40 jdolecek Exp $ */
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/*-
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* Copyright (c) 1982, 1986, 1989, 1991, 1993, 1995
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ufs_ihash.c 8.7 (Berkeley) 5/17/95
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/vnode.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/mutex.h>
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#include <fs/ntfs/ntfs.h>
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#include <fs/ntfs/ntfs_inode.h>
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#include <fs/ntfs/ntfs_ihash.h>
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MALLOC_DEFINE(M_NTFSNTHASH, "ntfs_nthash", "NTFS ntnode hash tables");
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/*
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* Structures associated with inode cacheing.
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*/
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static LIST_HEAD(nthashhead, ntnode) *ntfs_nthashtbl;
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static u_long ntfs_nthash; /* size of hash table - 1 */
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#define NTNOHASH(device, inum) (&ntfs_nthashtbl[(minor(device) + (inum)) & ntfs_nthash])
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static struct mtx ntfs_nthash_mtx;
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struct lock ntfs_hashlock;
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/*
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* Initialize inode hash table.
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*/
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void
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ntfs_nthashinit()
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{
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lockinit(&ntfs_hashlock, PINOD, "ntfs_nthashlock", 0, 0);
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ntfs_nthashtbl = hashinit(desiredvnodes, M_NTFSNTHASH, &ntfs_nthash);
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mtx_init(&ntfs_nthash_mtx, "ntfs nthash", NULL, MTX_DEF);
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}
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/*
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* Destroy inode hash table.
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*/
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void
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ntfs_nthashdestroy(void)
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{
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lockdestroy(&ntfs_hashlock);
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mtx_destroy(&ntfs_nthash_mtx);
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}
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/*
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* Use the device/inum pair to find the incore inode, and return a pointer
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* to it. If it is in core, return it, even if it is locked.
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*/
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struct ntnode *
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ntfs_nthashlookup(dev, inum)
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struct cdev *dev;
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ino_t inum;
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{
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struct ntnode *ip;
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mtx_lock(&ntfs_nthash_mtx);
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LIST_FOREACH(ip, NTNOHASH(dev, inum), i_hash)
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if (inum == ip->i_number && dev == ip->i_dev)
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break;
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mtx_unlock(&ntfs_nthash_mtx);
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return (ip);
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}
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/*
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* Insert the ntnode into the hash table.
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*/
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void
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ntfs_nthashins(ip)
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struct ntnode *ip;
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{
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struct nthashhead *ipp;
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mtx_lock(&ntfs_nthash_mtx);
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ipp = NTNOHASH(ip->i_dev, ip->i_number);
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LIST_INSERT_HEAD(ipp, ip, i_hash);
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ip->i_flag |= IN_HASHED;
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mtx_unlock(&ntfs_nthash_mtx);
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}
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/*
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* Remove the inode from the hash table.
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*/
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void
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ntfs_nthashrem(ip)
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struct ntnode *ip;
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{
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mtx_lock(&ntfs_nthash_mtx);
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if (ip->i_flag & IN_HASHED) {
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ip->i_flag &= ~IN_HASHED;
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LIST_REMOVE(ip, i_hash);
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}
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mtx_unlock(&ntfs_nthash_mtx);
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}
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