Commit | Line | Data |
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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/spinlock.h> |
11 | #include <linux/completion.h> | |
12 | #include <linux/buffer_head.h> | |
13 | #include <linux/crc32.h> | |
5c676f6d | 14 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
15 | #include <asm/uaccess.h> |
16 | ||
17 | #include "gfs2.h" | |
5c676f6d | 18 | #include "incore.h" |
b3b94faa | 19 | #include "glock.h" |
5c676f6d | 20 | #include "util.h" |
b3b94faa | 21 | |
e18b890b | 22 | struct kmem_cache *gfs2_glock_cachep __read_mostly; |
009d8518 | 23 | struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly; |
e18b890b CL |
24 | struct kmem_cache *gfs2_inode_cachep __read_mostly; |
25 | struct kmem_cache *gfs2_bufdata_cachep __read_mostly; | |
6bdd9be6 | 26 | struct kmem_cache *gfs2_rgrpd_cachep __read_mostly; |
37b2c837 | 27 | struct kmem_cache *gfs2_quotad_cachep __read_mostly; |
36f5580b | 28 | struct kmem_cache *gfs2_rsrv_cachep __read_mostly; |
e8c92ed7 | 29 | mempool_t *gfs2_page_pool __read_mostly; |
b3b94faa | 30 | |
b3b94faa DT |
31 | void gfs2_assert_i(struct gfs2_sbd *sdp) |
32 | { | |
33 | printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n", | |
34 | sdp->sd_fsname); | |
35 | } | |
36 | ||
da755fdb SW |
37 | int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) |
38 | { | |
f057f6cd SW |
39 | struct lm_lockstruct *ls = &sdp->sd_lockstruct; |
40 | const struct lm_lockops *lm = ls->ls_ops; | |
da755fdb SW |
41 | va_list args; |
42 | ||
d34843d0 BP |
43 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW && |
44 | test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags)) | |
da755fdb SW |
45 | return 0; |
46 | ||
47 | va_start(args, fmt); | |
48 | vprintk(fmt, args); | |
49 | va_end(args); | |
50 | ||
d34843d0 BP |
51 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) { |
52 | fs_err(sdp, "about to withdraw this file system\n"); | |
53 | BUG_ON(sdp->sd_args.ar_debug); | |
da755fdb | 54 | |
d34843d0 | 55 | kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE); |
f057f6cd | 56 | |
d34843d0 BP |
57 | if (lm->lm_unmount) { |
58 | fs_err(sdp, "telling LM to unmount\n"); | |
59 | lm->lm_unmount(sdp); | |
60 | } | |
61 | fs_err(sdp, "withdrawn\n"); | |
62 | dump_stack(); | |
f057f6cd | 63 | } |
d34843d0 BP |
64 | |
65 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) | |
66 | panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname); | |
da755fdb SW |
67 | |
68 | return -1; | |
69 | } | |
70 | ||
b3b94faa DT |
71 | /** |
72 | * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false | |
73 | * Returns: -1 if this call withdrew the machine, | |
74 | * -2 if it was already withdrawn | |
75 | */ | |
76 | ||
77 | int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, | |
78 | const char *function, char *file, unsigned int line) | |
79 | { | |
80 | int me; | |
81 | me = gfs2_lm_withdraw(sdp, | |
82 | "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" | |
83 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
84 | sdp->sd_fsname, assertion, | |
85 | sdp->sd_fsname, function, file, line); | |
18ec7d5c | 86 | dump_stack(); |
b3b94faa DT |
87 | return (me) ? -1 : -2; |
88 | } | |
89 | ||
90 | /** | |
91 | * gfs2_assert_warn_i - Print a message to the console if @assertion is false | |
92 | * Returns: -1 if we printed something | |
93 | * -2 if we didn't | |
94 | */ | |
95 | ||
96 | int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, | |
97 | const char *function, char *file, unsigned int line) | |
98 | { | |
99 | if (time_before(jiffies, | |
100 | sdp->sd_last_warning + | |
101 | gfs2_tune_get(sdp, gt_complain_secs) * HZ)) | |
102 | return -2; | |
103 | ||
d34843d0 BP |
104 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) |
105 | printk(KERN_WARNING | |
106 | "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
107 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
108 | sdp->sd_fsname, assertion, | |
109 | sdp->sd_fsname, function, file, line); | |
b3b94faa DT |
110 | |
111 | if (sdp->sd_args.ar_debug) | |
112 | BUG(); | |
18ec7d5c SW |
113 | else |
114 | dump_stack(); | |
b3b94faa | 115 | |
d34843d0 BP |
116 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) |
117 | panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
118 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
119 | sdp->sd_fsname, assertion, | |
120 | sdp->sd_fsname, function, file, line); | |
121 | ||
b3b94faa DT |
122 | sdp->sd_last_warning = jiffies; |
123 | ||
124 | return -1; | |
125 | } | |
126 | ||
127 | /** | |
128 | * gfs2_consist_i - Flag a filesystem consistency error and withdraw | |
129 | * Returns: -1 if this call withdrew the machine, | |
130 | * 0 if it was already withdrawn | |
131 | */ | |
132 | ||
133 | int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, | |
134 | char *file, unsigned int line) | |
135 | { | |
136 | int rv; | |
137 | rv = gfs2_lm_withdraw(sdp, | |
138 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
139 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
140 | sdp->sd_fsname, | |
141 | sdp->sd_fsname, function, file, line); | |
142 | return rv; | |
143 | } | |
144 | ||
145 | /** | |
146 | * gfs2_consist_inode_i - Flag an inode consistency error and withdraw | |
147 | * Returns: -1 if this call withdrew the machine, | |
148 | * 0 if it was already withdrawn | |
149 | */ | |
150 | ||
151 | int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, | |
152 | const char *function, char *file, unsigned int line) | |
153 | { | |
feaa7bba | 154 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
155 | int rv; |
156 | rv = gfs2_lm_withdraw(sdp, | |
157 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
158 | "GFS2: fsid=%s: inode = %llu %llu\n" | |
159 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
160 | sdp->sd_fsname, | |
dbb7cae2 SW |
161 | sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, |
162 | (unsigned long long)ip->i_no_addr, | |
b3b94faa DT |
163 | sdp->sd_fsname, function, file, line); |
164 | return rv; | |
165 | } | |
166 | ||
167 | /** | |
168 | * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw | |
169 | * Returns: -1 if this call withdrew the machine, | |
170 | * 0 if it was already withdrawn | |
171 | */ | |
172 | ||
173 | int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, | |
174 | const char *function, char *file, unsigned int line) | |
175 | { | |
176 | struct gfs2_sbd *sdp = rgd->rd_sbd; | |
177 | int rv; | |
178 | rv = gfs2_lm_withdraw(sdp, | |
179 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
180 | "GFS2: fsid=%s: RG = %llu\n" | |
181 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
182 | sdp->sd_fsname, | |
bb8d8a6f | 183 | sdp->sd_fsname, (unsigned long long)rgd->rd_addr, |
b3b94faa DT |
184 | sdp->sd_fsname, function, file, line); |
185 | return rv; | |
186 | } | |
187 | ||
188 | /** | |
189 | * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw | |
190 | * Returns: -1 if this call withdrew the machine, | |
191 | * -2 if it was already withdrawn | |
192 | */ | |
193 | ||
194 | int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
195 | const char *type, const char *function, char *file, | |
196 | unsigned int line) | |
197 | { | |
198 | int me; | |
199 | me = gfs2_lm_withdraw(sdp, | |
200 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
201 | "GFS2: fsid=%s: bh = %llu (%s)\n" | |
202 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
203 | sdp->sd_fsname, | |
382066da | 204 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, |
b3b94faa DT |
205 | sdp->sd_fsname, function, file, line); |
206 | return (me) ? -1 : -2; | |
207 | } | |
208 | ||
209 | /** | |
210 | * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw | |
211 | * Returns: -1 if this call withdrew the machine, | |
212 | * -2 if it was already withdrawn | |
213 | */ | |
214 | ||
215 | int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
cd915493 | 216 | u16 type, u16 t, const char *function, |
b3b94faa DT |
217 | char *file, unsigned int line) |
218 | { | |
219 | int me; | |
220 | me = gfs2_lm_withdraw(sdp, | |
221 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
222 | "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n" | |
223 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
224 | sdp->sd_fsname, | |
382066da | 225 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t, |
b3b94faa DT |
226 | sdp->sd_fsname, function, file, line); |
227 | return (me) ? -1 : -2; | |
228 | } | |
229 | ||
230 | /** | |
231 | * gfs2_io_error_i - Flag an I/O error and withdraw | |
232 | * Returns: -1 if this call withdrew the machine, | |
233 | * 0 if it was already withdrawn | |
234 | */ | |
235 | ||
236 | int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, | |
237 | unsigned int line) | |
238 | { | |
239 | int rv; | |
240 | rv = gfs2_lm_withdraw(sdp, | |
241 | "GFS2: fsid=%s: fatal: I/O error\n" | |
242 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
243 | sdp->sd_fsname, | |
244 | sdp->sd_fsname, function, file, line); | |
245 | return rv; | |
246 | } | |
247 | ||
248 | /** | |
249 | * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw | |
250 | * Returns: -1 if this call withdrew the machine, | |
251 | * 0 if it was already withdrawn | |
252 | */ | |
253 | ||
254 | int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
255 | const char *function, char *file, unsigned int line) | |
256 | { | |
257 | int rv; | |
258 | rv = gfs2_lm_withdraw(sdp, | |
259 | "GFS2: fsid=%s: fatal: I/O error\n" | |
260 | "GFS2: fsid=%s: block = %llu\n" | |
261 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
262 | sdp->sd_fsname, | |
382066da | 263 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, |
b3b94faa DT |
264 | sdp->sd_fsname, function, file, line); |
265 | return rv; | |
266 | } | |
267 | ||
b3b94faa DT |
268 | void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
269 | unsigned int bit, int new_value) | |
270 | { | |
271 | unsigned int c, o, b = bit; | |
272 | int old_value; | |
273 | ||
274 | c = b / (8 * PAGE_SIZE); | |
275 | b %= 8 * PAGE_SIZE; | |
276 | o = b / 8; | |
277 | b %= 8; | |
278 | ||
279 | old_value = (bitmap[c][o] & (1 << b)); | |
280 | gfs2_assert_withdraw(sdp, !old_value != !new_value); | |
281 | ||
282 | if (new_value) | |
283 | bitmap[c][o] |= 1 << b; | |
284 | else | |
285 | bitmap[c][o] &= ~(1 << b); | |
286 | } | |
287 |