Annotation of src/sys/ufs/ufs/ufs_wapbl.c, Revision 1.24
1.24 ! hannken 1: /* $NetBSD: ufs_wapbl.c,v 1.23 2012/01/27 19:22:50 para Exp $ */
1.2 simonb 2:
3: /*-
4: * Copyright (c) 2003,2006,2008 The NetBSD Foundation, Inc.
5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by Wasabi Systems, Inc.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
30: */
31:
32: /*
33: * Copyright (c) 1982, 1986, 1989, 1993, 1995
34: * The Regents of the University of California. All rights reserved.
35: * (c) UNIX System Laboratories, Inc.
36: * All or some portions of this file are derived from material licensed
37: * to the University of California by American Telephone and Telegraph
38: * Co. or Unix System Laboratories, Inc. and are reproduced herein with
39: * the permission of UNIX System Laboratories, Inc.
40: *
41: * Redistribution and use in source and binary forms, with or without
42: * modification, are permitted provided that the following conditions
43: * are met:
44: * 1. Redistributions of source code must retain the above copyright
45: * notice, this list of conditions and the following disclaimer.
46: * 2. Redistributions in binary form must reproduce the above copyright
47: * notice, this list of conditions and the following disclaimer in the
48: * documentation and/or other materials provided with the distribution.
49: * 3. Neither the name of the University nor the names of its contributors
50: * may be used to endorse or promote products derived from this software
51: * without specific prior written permission.
52: *
53: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
54: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
55: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
56: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
57: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
58: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
59: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
61: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
62: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
63: * SUCH DAMAGE.
64: *
65: * @(#)ufs_vnops.c 8.28 (Berkeley) 7/31/95
66: */
67:
68: #include <sys/cdefs.h>
1.24 ! hannken 69: __KERNEL_RCSID(0, "$NetBSD: ufs_wapbl.c,v 1.23 2012/01/27 19:22:50 para Exp $");
1.2 simonb 70:
71: #include <sys/param.h>
72: #include <sys/systm.h>
73: #include <sys/namei.h>
74: #include <sys/resourcevar.h>
75: #include <sys/kernel.h>
76: #include <sys/file.h>
77: #include <sys/stat.h>
78: #include <sys/buf.h>
79: #include <sys/proc.h>
80: #include <sys/mount.h>
81: #include <sys/vnode.h>
82: #include <sys/dirent.h>
83: #include <sys/lockf.h>
84: #include <sys/kauth.h>
85: #include <sys/wapbl.h>
86:
87: #include <miscfs/specfs/specdev.h>
88: #include <miscfs/fifofs/fifo.h>
89:
90: #include <ufs/ufs/quota.h>
91: #include <ufs/ufs/inode.h>
92: #include <ufs/ufs/dir.h>
93: #include <ufs/ufs/ufsmount.h>
94: #include <ufs/ufs/ufs_bswap.h>
95: #include <ufs/ufs/ufs_extern.h>
96: #include <ufs/ufs/ufs_wapbl.h>
97: #include <ufs/ext2fs/ext2fs_extern.h>
98: #include <ufs/lfs/lfs_extern.h>
99:
100: #include <uvm/uvm.h>
101:
102: #ifdef WAPBL_DEBUG_INODES
1.3 pooka 103: #error WAPBL_DEBUG_INODES: not functional before ufs_wapbl.c is updated
1.2 simonb 104: void
105: ufs_wapbl_verify_inodes(struct mount *mp, const char *str)
106: {
107: struct vnode *vp, *nvp;
108: struct inode *ip;
1.13 rmind 109: struct buf *bp, *nbp;
1.2 simonb 110:
1.13 rmind 111: mutex_enter(&mntvnode_lock);
1.2 simonb 112: loop:
113: TAILQ_FOREACH_REVERSE(vp, &mp->mnt_vnodelist, vnodelst, v_mntvnodes) {
114: /*
115: * If the vnode that we are about to sync is no longer
116: * associated with this mount point, start over.
117: */
118: if (vp->v_mount != mp)
119: goto loop;
1.13 rmind 120: mutex_enter(&vp->v_interlock);
1.2 simonb 121: nvp = TAILQ_NEXT(vp, v_mntvnodes);
122: ip = VTOI(vp);
123: if (vp->v_type == VNON) {
1.13 rmind 124: mutex_exit(&vp->v_interlock);
1.2 simonb 125: continue;
126: }
127: /* verify that update has been called on all inodes */
128: if (ip->i_flag & (IN_CHANGE | IN_UPDATE)) {
129: panic("wapbl_verify: mp %p: dirty vnode %p (inode %p): 0x%x\n",
130: mp, vp, ip, ip->i_flag);
131: }
1.13 rmind 132: mutex_exit(&mntvnode_lock);
1.2 simonb 133:
1.13 rmind 134: mutex_enter(&bufcache_lock);
135: for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
136: nbp = LIST_NEXT(bp, b_vnbufs);
137: if ((bp->b_cflags & BC_BUSY)) {
138: continue;
1.2 simonb 139: }
1.13 rmind 140: KASSERT((bp->b_oflags & BO_DELWRI) != 0);
141: KASSERT((bp->b_flags & B_LOCKED) != 0);
1.2 simonb 142: }
1.13 rmind 143: mutex_exit(&bufcache_lock);
144: mutex_exit(&vp->v_interlock);
145:
146: mutex_enter(&mntvnode_lock);
1.2 simonb 147: }
1.13 rmind 148: mutex_exit(&mntvnode_lock);
1.2 simonb 149:
150: vp = VFSTOUFS(mp)->um_devvp;
1.13 rmind 151: mutex_enter(&vp->v_interlock);
152: mutex_enter(&bufcache_lock);
153: for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) {
154: nbp = LIST_NEXT(bp, b_vnbufs);
155: if ((bp->b_cflags & BC_BUSY)) {
156: continue;
1.2 simonb 157: }
1.13 rmind 158: KASSERT((bp->b_oflags & BO_DELWRI) != 0);
159: KASSERT((bp->b_flags & B_LOCKED) != 0);
1.2 simonb 160: }
1.13 rmind 161: mutex_exit(&bufcache_lock);
162: mutex_exit(&vp->v_interlock);
1.2 simonb 163: }
164: #endif /* WAPBL_DEBUG_INODES */
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