blob: 7c3806c674064cd5669e1645ade0a3fe8f52966b [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License v.2.
8 */
9
10#include <linux/sched.h>
11#include <linux/slab.h>
12#include <linux/spinlock.h>
13#include <linux/completion.h>
14#include <linux/buffer_head.h>
15#include <linux/crc32.h>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050016#include <linux/gfs2_ondisk.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000017#include <asm/uaccess.h>
18
19#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050020#include "lm_interface.h"
21#include "incore.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000022#include "glock.h"
23#include "lm.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050024#include "util.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000025
26kmem_cache_t *gfs2_glock_cachep __read_mostly;
27kmem_cache_t *gfs2_inode_cachep __read_mostly;
28kmem_cache_t *gfs2_bufdata_cachep __read_mostly;
29
David Teiglandb3b94fa2006-01-16 16:50:04 +000030void gfs2_assert_i(struct gfs2_sbd *sdp)
31{
32 printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n",
33 sdp->sd_fsname);
34}
35
36/**
37 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
38 * Returns: -1 if this call withdrew the machine,
39 * -2 if it was already withdrawn
40 */
41
42int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
43 const char *function, char *file, unsigned int line)
44{
45 int me;
46 me = gfs2_lm_withdraw(sdp,
47 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
48 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
49 sdp->sd_fsname, assertion,
50 sdp->sd_fsname, function, file, line);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +000051 dump_stack();
David Teiglandb3b94fa2006-01-16 16:50:04 +000052 return (me) ? -1 : -2;
53}
54
55/**
56 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
57 * Returns: -1 if we printed something
58 * -2 if we didn't
59 */
60
61int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
62 const char *function, char *file, unsigned int line)
63{
64 if (time_before(jiffies,
65 sdp->sd_last_warning +
66 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
67 return -2;
68
69 printk(KERN_WARNING
70 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
71 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
72 sdp->sd_fsname, assertion,
73 sdp->sd_fsname, function, file, line);
74
75 if (sdp->sd_args.ar_debug)
76 BUG();
Steven Whitehouse18ec7d52006-02-08 11:50:51 +000077 else
78 dump_stack();
David Teiglandb3b94fa2006-01-16 16:50:04 +000079
80 sdp->sd_last_warning = jiffies;
81
82 return -1;
83}
84
85/**
86 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
87 * Returns: -1 if this call withdrew the machine,
88 * 0 if it was already withdrawn
89 */
90
91int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
92 char *file, unsigned int line)
93{
94 int rv;
95 rv = gfs2_lm_withdraw(sdp,
96 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
97 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
98 sdp->sd_fsname,
99 sdp->sd_fsname, function, file, line);
100 return rv;
101}
102
103/**
104 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
105 * Returns: -1 if this call withdrew the machine,
106 * 0 if it was already withdrawn
107 */
108
109int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
110 const char *function, char *file, unsigned int line)
111{
112 struct gfs2_sbd *sdp = ip->i_sbd;
113 int rv;
114 rv = gfs2_lm_withdraw(sdp,
115 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
116 "GFS2: fsid=%s: inode = %llu %llu\n"
117 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
118 sdp->sd_fsname,
119 sdp->sd_fsname, ip->i_num.no_formal_ino, ip->i_num.no_addr,
120 sdp->sd_fsname, function, file, line);
121 return rv;
122}
123
124/**
125 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
126 * Returns: -1 if this call withdrew the machine,
127 * 0 if it was already withdrawn
128 */
129
130int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
131 const char *function, char *file, unsigned int line)
132{
133 struct gfs2_sbd *sdp = rgd->rd_sbd;
134 int rv;
135 rv = gfs2_lm_withdraw(sdp,
136 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
137 "GFS2: fsid=%s: RG = %llu\n"
138 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
139 sdp->sd_fsname,
140 sdp->sd_fsname, rgd->rd_ri.ri_addr,
141 sdp->sd_fsname, function, file, line);
142 return rv;
143}
144
145/**
146 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
147 * Returns: -1 if this call withdrew the machine,
148 * -2 if it was already withdrawn
149 */
150
151int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
152 const char *type, const char *function, char *file,
153 unsigned int line)
154{
155 int me;
156 me = gfs2_lm_withdraw(sdp,
157 "GFS2: fsid=%s: fatal: invalid metadata block\n"
158 "GFS2: fsid=%s: bh = %llu (%s)\n"
159 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
160 sdp->sd_fsname,
161 sdp->sd_fsname, (uint64_t)bh->b_blocknr, type,
162 sdp->sd_fsname, function, file, line);
163 return (me) ? -1 : -2;
164}
165
166/**
167 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
168 * Returns: -1 if this call withdrew the machine,
169 * -2 if it was already withdrawn
170 */
171
172int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
173 uint16_t type, uint16_t t, const char *function,
174 char *file, unsigned int line)
175{
176 int me;
177 me = gfs2_lm_withdraw(sdp,
178 "GFS2: fsid=%s: fatal: invalid metadata block\n"
179 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
180 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
181 sdp->sd_fsname,
182 sdp->sd_fsname, (uint64_t)bh->b_blocknr, type, t,
183 sdp->sd_fsname, function, file, line);
184 return (me) ? -1 : -2;
185}
186
187/**
188 * gfs2_io_error_i - Flag an I/O error and withdraw
189 * Returns: -1 if this call withdrew the machine,
190 * 0 if it was already withdrawn
191 */
192
193int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
194 unsigned int line)
195{
196 int rv;
197 rv = gfs2_lm_withdraw(sdp,
198 "GFS2: fsid=%s: fatal: I/O error\n"
199 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
200 sdp->sd_fsname,
201 sdp->sd_fsname, function, file, line);
202 return rv;
203}
204
205/**
206 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
207 * Returns: -1 if this call withdrew the machine,
208 * 0 if it was already withdrawn
209 */
210
211int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
212 const char *function, char *file, unsigned int line)
213{
214 int rv;
215 rv = gfs2_lm_withdraw(sdp,
216 "GFS2: fsid=%s: fatal: I/O error\n"
217 "GFS2: fsid=%s: block = %llu\n"
218 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
219 sdp->sd_fsname,
220 sdp->sd_fsname, (uint64_t)bh->b_blocknr,
221 sdp->sd_fsname, function, file, line);
222 return rv;
223}
224
David Teiglandb3b94fa2006-01-16 16:50:04 +0000225void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
226 unsigned int bit, int new_value)
227{
228 unsigned int c, o, b = bit;
229 int old_value;
230
231 c = b / (8 * PAGE_SIZE);
232 b %= 8 * PAGE_SIZE;
233 o = b / 8;
234 b %= 8;
235
236 old_value = (bitmap[c][o] & (1 << b));
237 gfs2_assert_withdraw(sdp, !old_value != !new_value);
238
239 if (new_value)
240 bitmap[c][o] |= 1 << b;
241 else
242 bitmap[c][o] &= ~(1 << b);
243}
244