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 | |
fd95e81c SW |
57 | if (!strcmp(sdp->sd_lockstruct.ls_ops->lm_proto_name, "lock_dlm")) |
58 | wait_for_completion(&sdp->sd_wdack); | |
59 | ||
d34843d0 BP |
60 | if (lm->lm_unmount) { |
61 | fs_err(sdp, "telling LM to unmount\n"); | |
62 | lm->lm_unmount(sdp); | |
63 | } | |
64 | fs_err(sdp, "withdrawn\n"); | |
65 | dump_stack(); | |
f057f6cd | 66 | } |
d34843d0 BP |
67 | |
68 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) | |
69 | panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname); | |
da755fdb SW |
70 | |
71 | return -1; | |
72 | } | |
73 | ||
b3b94faa DT |
74 | /** |
75 | * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false | |
76 | * Returns: -1 if this call withdrew the machine, | |
77 | * -2 if it was already withdrawn | |
78 | */ | |
79 | ||
80 | int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, | |
81 | const char *function, char *file, unsigned int line) | |
82 | { | |
83 | int me; | |
84 | me = gfs2_lm_withdraw(sdp, | |
85 | "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" | |
86 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
87 | sdp->sd_fsname, assertion, | |
88 | sdp->sd_fsname, function, file, line); | |
18ec7d5c | 89 | dump_stack(); |
b3b94faa DT |
90 | return (me) ? -1 : -2; |
91 | } | |
92 | ||
93 | /** | |
94 | * gfs2_assert_warn_i - Print a message to the console if @assertion is false | |
95 | * Returns: -1 if we printed something | |
96 | * -2 if we didn't | |
97 | */ | |
98 | ||
99 | int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, | |
100 | const char *function, char *file, unsigned int line) | |
101 | { | |
102 | if (time_before(jiffies, | |
103 | sdp->sd_last_warning + | |
104 | gfs2_tune_get(sdp, gt_complain_secs) * HZ)) | |
105 | return -2; | |
106 | ||
d34843d0 BP |
107 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) |
108 | printk(KERN_WARNING | |
109 | "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
110 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
111 | sdp->sd_fsname, assertion, | |
112 | sdp->sd_fsname, function, file, line); | |
b3b94faa DT |
113 | |
114 | if (sdp->sd_args.ar_debug) | |
115 | BUG(); | |
18ec7d5c SW |
116 | else |
117 | dump_stack(); | |
b3b94faa | 118 | |
d34843d0 BP |
119 | if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC) |
120 | panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
121 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
122 | sdp->sd_fsname, assertion, | |
123 | sdp->sd_fsname, function, file, line); | |
124 | ||
b3b94faa DT |
125 | sdp->sd_last_warning = jiffies; |
126 | ||
127 | return -1; | |
128 | } | |
129 | ||
130 | /** | |
131 | * gfs2_consist_i - Flag a filesystem consistency error and withdraw | |
132 | * Returns: -1 if this call withdrew the machine, | |
133 | * 0 if it was already withdrawn | |
134 | */ | |
135 | ||
136 | int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, | |
137 | char *file, unsigned int line) | |
138 | { | |
139 | int rv; | |
140 | rv = gfs2_lm_withdraw(sdp, | |
141 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
142 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
143 | sdp->sd_fsname, | |
144 | sdp->sd_fsname, function, file, line); | |
145 | return rv; | |
146 | } | |
147 | ||
148 | /** | |
149 | * gfs2_consist_inode_i - Flag an inode consistency error and withdraw | |
150 | * Returns: -1 if this call withdrew the machine, | |
151 | * 0 if it was already withdrawn | |
152 | */ | |
153 | ||
154 | int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, | |
155 | const char *function, char *file, unsigned int line) | |
156 | { | |
feaa7bba | 157 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
158 | int rv; |
159 | rv = gfs2_lm_withdraw(sdp, | |
160 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
161 | "GFS2: fsid=%s: inode = %llu %llu\n" | |
162 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
163 | sdp->sd_fsname, | |
dbb7cae2 SW |
164 | sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, |
165 | (unsigned long long)ip->i_no_addr, | |
b3b94faa DT |
166 | sdp->sd_fsname, function, file, line); |
167 | return rv; | |
168 | } | |
169 | ||
170 | /** | |
171 | * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw | |
172 | * Returns: -1 if this call withdrew the machine, | |
173 | * 0 if it was already withdrawn | |
174 | */ | |
175 | ||
176 | int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, | |
177 | const char *function, char *file, unsigned int line) | |
178 | { | |
179 | struct gfs2_sbd *sdp = rgd->rd_sbd; | |
180 | int rv; | |
181 | rv = gfs2_lm_withdraw(sdp, | |
182 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
183 | "GFS2: fsid=%s: RG = %llu\n" | |
184 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
185 | sdp->sd_fsname, | |
bb8d8a6f | 186 | sdp->sd_fsname, (unsigned long long)rgd->rd_addr, |
b3b94faa DT |
187 | sdp->sd_fsname, function, file, line); |
188 | return rv; | |
189 | } | |
190 | ||
191 | /** | |
192 | * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw | |
193 | * Returns: -1 if this call withdrew the machine, | |
194 | * -2 if it was already withdrawn | |
195 | */ | |
196 | ||
197 | int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
198 | const char *type, const char *function, char *file, | |
199 | unsigned int line) | |
200 | { | |
201 | int me; | |
202 | me = gfs2_lm_withdraw(sdp, | |
203 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
204 | "GFS2: fsid=%s: bh = %llu (%s)\n" | |
205 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
206 | sdp->sd_fsname, | |
382066da | 207 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, |
b3b94faa DT |
208 | sdp->sd_fsname, function, file, line); |
209 | return (me) ? -1 : -2; | |
210 | } | |
211 | ||
212 | /** | |
213 | * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw | |
214 | * Returns: -1 if this call withdrew the machine, | |
215 | * -2 if it was already withdrawn | |
216 | */ | |
217 | ||
218 | int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
cd915493 | 219 | u16 type, u16 t, const char *function, |
b3b94faa DT |
220 | char *file, unsigned int line) |
221 | { | |
222 | int me; | |
223 | me = gfs2_lm_withdraw(sdp, | |
224 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
225 | "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n" | |
226 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
227 | sdp->sd_fsname, | |
382066da | 228 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t, |
b3b94faa DT |
229 | sdp->sd_fsname, function, file, line); |
230 | return (me) ? -1 : -2; | |
231 | } | |
232 | ||
233 | /** | |
234 | * gfs2_io_error_i - Flag an I/O error and withdraw | |
235 | * Returns: -1 if this call withdrew the machine, | |
236 | * 0 if it was already withdrawn | |
237 | */ | |
238 | ||
239 | int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, | |
240 | unsigned int line) | |
241 | { | |
242 | int rv; | |
243 | rv = gfs2_lm_withdraw(sdp, | |
244 | "GFS2: fsid=%s: fatal: I/O error\n" | |
245 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
246 | sdp->sd_fsname, | |
247 | sdp->sd_fsname, function, file, line); | |
248 | return rv; | |
249 | } | |
250 | ||
251 | /** | |
252 | * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw | |
253 | * Returns: -1 if this call withdrew the machine, | |
254 | * 0 if it was already withdrawn | |
255 | */ | |
256 | ||
257 | int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
258 | const char *function, char *file, unsigned int line) | |
259 | { | |
260 | int rv; | |
261 | rv = gfs2_lm_withdraw(sdp, | |
262 | "GFS2: fsid=%s: fatal: I/O error\n" | |
263 | "GFS2: fsid=%s: block = %llu\n" | |
264 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
265 | sdp->sd_fsname, | |
382066da | 266 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, |
b3b94faa DT |
267 | sdp->sd_fsname, function, file, line); |
268 | return rv; | |
269 | } | |
270 | ||
b3b94faa DT |
271 | void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
272 | unsigned int bit, int new_value) | |
273 | { | |
274 | unsigned int c, o, b = bit; | |
275 | int old_value; | |
276 | ||
277 | c = b / (8 * PAGE_SIZE); | |
278 | b %= 8 * PAGE_SIZE; | |
279 | o = b / 8; | |
280 | b %= 8; | |
281 | ||
282 | old_value = (bitmap[c][o] & (1 << b)); | |
283 | gfs2_assert_withdraw(sdp, !old_value != !new_value); | |
284 | ||
285 | if (new_value) | |
286 | bitmap[c][o] |= 1 << b; | |
287 | else | |
288 | bitmap[c][o] &= ~(1 << b); | |
289 | } | |
290 |