1 | /* $NetBSD: ufs_wapbl.c,v 1.23 2012/01/27 19:22:50 para Exp $ */ |
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> |
69 | __KERNEL_RCSID(0, "$NetBSD: ufs_wapbl.c,v 1.23 2012/01/27 19:22:50 para Exp $" ); |
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 | #include <sys/fstrans.h> |
87 | |
88 | #include <miscfs/specfs/specdev.h> |
89 | #include <miscfs/fifofs/fifo.h> |
90 | |
91 | #include <ufs/ufs/quota.h> |
92 | #include <ufs/ufs/inode.h> |
93 | #include <ufs/ufs/dir.h> |
94 | #include <ufs/ufs/ufsmount.h> |
95 | #include <ufs/ufs/ufs_bswap.h> |
96 | #include <ufs/ufs/ufs_extern.h> |
97 | #include <ufs/ufs/ufs_wapbl.h> |
98 | #include <ufs/ext2fs/ext2fs_extern.h> |
99 | #include <ufs/lfs/lfs_extern.h> |
100 | |
101 | #include <uvm/uvm.h> |
102 | |
103 | #ifdef WAPBL_DEBUG_INODES |
104 | #error WAPBL_DEBUG_INODES: not functional before ufs_wapbl.c is updated |
105 | void |
106 | ufs_wapbl_verify_inodes(struct mount *mp, const char *str) |
107 | { |
108 | struct vnode *vp, *nvp; |
109 | struct inode *ip; |
110 | struct buf *bp, *nbp; |
111 | |
112 | mutex_enter(&mntvnode_lock); |
113 | loop: |
114 | TAILQ_FOREACH_REVERSE(vp, &mp->mnt_vnodelist, vnodelst, v_mntvnodes) { |
115 | /* |
116 | * If the vnode that we are about to sync is no longer |
117 | * associated with this mount point, start over. |
118 | */ |
119 | if (vp->v_mount != mp) |
120 | goto loop; |
121 | mutex_enter(&vp->v_interlock); |
122 | nvp = TAILQ_NEXT(vp, v_mntvnodes); |
123 | ip = VTOI(vp); |
124 | if (vp->v_type == VNON) { |
125 | mutex_exit(&vp->v_interlock); |
126 | continue; |
127 | } |
128 | /* verify that update has been called on all inodes */ |
129 | if (ip->i_flag & (IN_CHANGE | IN_UPDATE)) { |
130 | panic("wapbl_verify: mp %p: dirty vnode %p (inode %p): 0x%x\n" , |
131 | mp, vp, ip, ip->i_flag); |
132 | } |
133 | mutex_exit(&mntvnode_lock); |
134 | |
135 | mutex_enter(&bufcache_lock); |
136 | for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { |
137 | nbp = LIST_NEXT(bp, b_vnbufs); |
138 | if ((bp->b_cflags & BC_BUSY)) { |
139 | continue; |
140 | } |
141 | KASSERT((bp->b_oflags & BO_DELWRI) != 0); |
142 | KASSERT((bp->b_flags & B_LOCKED) != 0); |
143 | } |
144 | mutex_exit(&bufcache_lock); |
145 | mutex_exit(&vp->v_interlock); |
146 | |
147 | mutex_enter(&mntvnode_lock); |
148 | } |
149 | mutex_exit(&mntvnode_lock); |
150 | |
151 | vp = VFSTOUFS(mp)->um_devvp; |
152 | mutex_enter(&vp->v_interlock); |
153 | mutex_enter(&bufcache_lock); |
154 | for (bp = LIST_FIRST(&vp->v_dirtyblkhd); bp; bp = nbp) { |
155 | nbp = LIST_NEXT(bp, b_vnbufs); |
156 | if ((bp->b_cflags & BC_BUSY)) { |
157 | continue; |
158 | } |
159 | KASSERT((bp->b_oflags & BO_DELWRI) != 0); |
160 | KASSERT((bp->b_flags & B_LOCKED) != 0); |
161 | } |
162 | mutex_exit(&bufcache_lock); |
163 | mutex_exit(&vp->v_interlock); |
164 | } |
165 | #endif /* WAPBL_DEBUG_INODES */ |
166 | |