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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
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 | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
b3b94faa DT |
10 | #include <linux/slab.h> |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
14 | #include <linux/crc32.h> | |
5c676f6d | 15 | #include <linux/gfs2_ondisk.h> |
7d308590 | 16 | #include <linux/lm_interface.h> |
b3b94faa DT |
17 | #include <asm/uaccess.h> |
18 | ||
19 | #include "gfs2.h" | |
5c676f6d | 20 | #include "incore.h" |
b3b94faa | 21 | #include "glock.h" |
5c676f6d | 22 | #include "util.h" |
b3b94faa | 23 | |
e18b890b CL |
24 | struct kmem_cache *gfs2_glock_cachep __read_mostly; |
25 | struct kmem_cache *gfs2_inode_cachep __read_mostly; | |
26 | struct kmem_cache *gfs2_bufdata_cachep __read_mostly; | |
6bdd9be6 | 27 | struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; |
37b2c837 | 28 | struct kmem_cache *gfs2_quotad_cachep __read_mostly; |
b3b94faa | 29 | |
b3b94faa DT |
30 | void 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 | ||
da755fdb SW |
36 | int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) |
37 | { | |
38 | va_list args; | |
39 | ||
40 | if (test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags)) | |
41 | return 0; | |
42 | ||
43 | va_start(args, fmt); | |
44 | vprintk(fmt, args); | |
45 | va_end(args); | |
46 | ||
47 | fs_err(sdp, "about to withdraw this file system\n"); | |
48 | BUG_ON(sdp->sd_args.ar_debug); | |
49 | ||
50 | fs_err(sdp, "telling LM to withdraw\n"); | |
51 | gfs2_withdraw_lockproto(&sdp->sd_lockstruct); | |
52 | fs_err(sdp, "withdrawn\n"); | |
53 | dump_stack(); | |
54 | ||
55 | return -1; | |
56 | } | |
57 | ||
b3b94faa DT |
58 | /** |
59 | * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false | |
60 | * Returns: -1 if this call withdrew the machine, | |
61 | * -2 if it was already withdrawn | |
62 | */ | |
63 | ||
64 | int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, | |
65 | const char *function, char *file, unsigned int line) | |
66 | { | |
67 | int me; | |
68 | me = gfs2_lm_withdraw(sdp, | |
69 | "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" | |
70 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
71 | sdp->sd_fsname, assertion, | |
72 | sdp->sd_fsname, function, file, line); | |
18ec7d5c | 73 | dump_stack(); |
b3b94faa DT |
74 | return (me) ? -1 : -2; |
75 | } | |
76 | ||
77 | /** | |
78 | * gfs2_assert_warn_i - Print a message to the console if @assertion is false | |
79 | * Returns: -1 if we printed something | |
80 | * -2 if we didn't | |
81 | */ | |
82 | ||
83 | int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, | |
84 | const char *function, char *file, unsigned int line) | |
85 | { | |
86 | if (time_before(jiffies, | |
87 | sdp->sd_last_warning + | |
88 | gfs2_tune_get(sdp, gt_complain_secs) * HZ)) | |
89 | return -2; | |
90 | ||
91 | printk(KERN_WARNING | |
92 | "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
93 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
94 | sdp->sd_fsname, assertion, | |
95 | sdp->sd_fsname, function, file, line); | |
96 | ||
97 | if (sdp->sd_args.ar_debug) | |
98 | BUG(); | |
18ec7d5c SW |
99 | else |
100 | dump_stack(); | |
b3b94faa DT |
101 | |
102 | sdp->sd_last_warning = jiffies; | |
103 | ||
104 | return -1; | |
105 | } | |
106 | ||
107 | /** | |
108 | * gfs2_consist_i - Flag a filesystem consistency error and withdraw | |
109 | * Returns: -1 if this call withdrew the machine, | |
110 | * 0 if it was already withdrawn | |
111 | */ | |
112 | ||
113 | int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, | |
114 | char *file, unsigned int line) | |
115 | { | |
116 | int rv; | |
117 | rv = gfs2_lm_withdraw(sdp, | |
118 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
119 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
120 | sdp->sd_fsname, | |
121 | sdp->sd_fsname, function, file, line); | |
122 | return rv; | |
123 | } | |
124 | ||
125 | /** | |
126 | * gfs2_consist_inode_i - Flag an inode consistency error and withdraw | |
127 | * Returns: -1 if this call withdrew the machine, | |
128 | * 0 if it was already withdrawn | |
129 | */ | |
130 | ||
131 | int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, | |
132 | const char *function, char *file, unsigned int line) | |
133 | { | |
feaa7bba | 134 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
135 | int rv; |
136 | rv = gfs2_lm_withdraw(sdp, | |
137 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
138 | "GFS2: fsid=%s: inode = %llu %llu\n" | |
139 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
140 | sdp->sd_fsname, | |
dbb7cae2 SW |
141 | sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, |
142 | (unsigned long long)ip->i_no_addr, | |
b3b94faa DT |
143 | sdp->sd_fsname, function, file, line); |
144 | return rv; | |
145 | } | |
146 | ||
147 | /** | |
148 | * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw | |
149 | * Returns: -1 if this call withdrew the machine, | |
150 | * 0 if it was already withdrawn | |
151 | */ | |
152 | ||
153 | int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, | |
154 | const char *function, char *file, unsigned int line) | |
155 | { | |
156 | struct gfs2_sbd *sdp = rgd->rd_sbd; | |
157 | int rv; | |
158 | rv = gfs2_lm_withdraw(sdp, | |
159 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
160 | "GFS2: fsid=%s: RG = %llu\n" | |
161 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
162 | sdp->sd_fsname, | |
bb8d8a6f | 163 | sdp->sd_fsname, (unsigned long long)rgd->rd_addr, |
b3b94faa DT |
164 | sdp->sd_fsname, function, file, line); |
165 | return rv; | |
166 | } | |
167 | ||
168 | /** | |
169 | * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw | |
170 | * Returns: -1 if this call withdrew the machine, | |
171 | * -2 if it was already withdrawn | |
172 | */ | |
173 | ||
174 | int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
175 | const char *type, const char *function, char *file, | |
176 | unsigned int line) | |
177 | { | |
178 | int me; | |
179 | me = gfs2_lm_withdraw(sdp, | |
180 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
181 | "GFS2: fsid=%s: bh = %llu (%s)\n" | |
182 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
183 | sdp->sd_fsname, | |
382066da | 184 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, |
b3b94faa DT |
185 | sdp->sd_fsname, function, file, line); |
186 | return (me) ? -1 : -2; | |
187 | } | |
188 | ||
189 | /** | |
190 | * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw | |
191 | * Returns: -1 if this call withdrew the machine, | |
192 | * -2 if it was already withdrawn | |
193 | */ | |
194 | ||
195 | int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
cd915493 | 196 | u16 type, u16 t, const char *function, |
b3b94faa DT |
197 | char *file, unsigned int line) |
198 | { | |
199 | int me; | |
200 | me = gfs2_lm_withdraw(sdp, | |
201 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
202 | "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n" | |
203 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
204 | sdp->sd_fsname, | |
382066da | 205 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t, |
b3b94faa DT |
206 | sdp->sd_fsname, function, file, line); |
207 | return (me) ? -1 : -2; | |
208 | } | |
209 | ||
210 | /** | |
211 | * gfs2_io_error_i - Flag an I/O error and withdraw | |
212 | * Returns: -1 if this call withdrew the machine, | |
213 | * 0 if it was already withdrawn | |
214 | */ | |
215 | ||
216 | int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, | |
217 | unsigned int line) | |
218 | { | |
219 | int rv; | |
220 | rv = gfs2_lm_withdraw(sdp, | |
221 | "GFS2: fsid=%s: fatal: I/O error\n" | |
222 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
223 | sdp->sd_fsname, | |
224 | sdp->sd_fsname, function, file, line); | |
225 | return rv; | |
226 | } | |
227 | ||
228 | /** | |
229 | * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw | |
230 | * Returns: -1 if this call withdrew the machine, | |
231 | * 0 if it was already withdrawn | |
232 | */ | |
233 | ||
234 | int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
235 | const char *function, char *file, unsigned int line) | |
236 | { | |
237 | int rv; | |
238 | rv = gfs2_lm_withdraw(sdp, | |
239 | "GFS2: fsid=%s: fatal: I/O error\n" | |
240 | "GFS2: fsid=%s: block = %llu\n" | |
241 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
242 | sdp->sd_fsname, | |
382066da | 243 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, |
b3b94faa DT |
244 | sdp->sd_fsname, function, file, line); |
245 | return rv; | |
246 | } | |
247 | ||
b3b94faa DT |
248 | void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
249 | unsigned int bit, int new_value) | |
250 | { | |
251 | unsigned int c, o, b = bit; | |
252 | int old_value; | |
253 | ||
254 | c = b / (8 * PAGE_SIZE); | |
255 | b %= 8 * PAGE_SIZE; | |
256 | o = b / 8; | |
257 | b %= 8; | |
258 | ||
259 | old_value = (bitmap[c][o] & (1 << b)); | |
260 | gfs2_assert_withdraw(sdp, !old_value != !new_value); | |
261 | ||
262 | if (new_value) | |
263 | bitmap[c][o] |= 1 << b; | |
264 | else | |
265 | bitmap[c][o] &= ~(1 << b); | |
266 | } | |
267 |