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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; |
b3b94faa | 28 | |
b3b94faa DT |
29 | void gfs2_assert_i(struct gfs2_sbd *sdp) |
30 | { | |
31 | printk(KERN_EMERG "GFS2: fsid=%s: fatal assertion failed\n", | |
32 | sdp->sd_fsname); | |
33 | } | |
34 | ||
da755fdb SW |
35 | int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...) |
36 | { | |
37 | va_list args; | |
38 | ||
39 | if (test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags)) | |
40 | return 0; | |
41 | ||
42 | va_start(args, fmt); | |
43 | vprintk(fmt, args); | |
44 | va_end(args); | |
45 | ||
46 | fs_err(sdp, "about to withdraw this file system\n"); | |
47 | BUG_ON(sdp->sd_args.ar_debug); | |
48 | ||
49 | fs_err(sdp, "telling LM to withdraw\n"); | |
50 | gfs2_withdraw_lockproto(&sdp->sd_lockstruct); | |
51 | fs_err(sdp, "withdrawn\n"); | |
52 | dump_stack(); | |
53 | ||
54 | return -1; | |
55 | } | |
56 | ||
b3b94faa DT |
57 | /** |
58 | * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false | |
59 | * Returns: -1 if this call withdrew the machine, | |
60 | * -2 if it was already withdrawn | |
61 | */ | |
62 | ||
63 | int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion, | |
64 | const char *function, char *file, unsigned int line) | |
65 | { | |
66 | int me; | |
67 | me = gfs2_lm_withdraw(sdp, | |
68 | "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n" | |
69 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
70 | sdp->sd_fsname, assertion, | |
71 | sdp->sd_fsname, function, file, line); | |
18ec7d5c | 72 | dump_stack(); |
b3b94faa DT |
73 | return (me) ? -1 : -2; |
74 | } | |
75 | ||
76 | /** | |
77 | * gfs2_assert_warn_i - Print a message to the console if @assertion is false | |
78 | * Returns: -1 if we printed something | |
79 | * -2 if we didn't | |
80 | */ | |
81 | ||
82 | int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion, | |
83 | const char *function, char *file, unsigned int line) | |
84 | { | |
85 | if (time_before(jiffies, | |
86 | sdp->sd_last_warning + | |
87 | gfs2_tune_get(sdp, gt_complain_secs) * HZ)) | |
88 | return -2; | |
89 | ||
90 | printk(KERN_WARNING | |
91 | "GFS2: fsid=%s: warning: assertion \"%s\" failed\n" | |
92 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
93 | sdp->sd_fsname, assertion, | |
94 | sdp->sd_fsname, function, file, line); | |
95 | ||
96 | if (sdp->sd_args.ar_debug) | |
97 | BUG(); | |
18ec7d5c SW |
98 | else |
99 | dump_stack(); | |
b3b94faa DT |
100 | |
101 | sdp->sd_last_warning = jiffies; | |
102 | ||
103 | return -1; | |
104 | } | |
105 | ||
106 | /** | |
107 | * gfs2_consist_i - Flag a filesystem consistency error and withdraw | |
108 | * Returns: -1 if this call withdrew the machine, | |
109 | * 0 if it was already withdrawn | |
110 | */ | |
111 | ||
112 | int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function, | |
113 | char *file, unsigned int line) | |
114 | { | |
115 | int rv; | |
116 | rv = gfs2_lm_withdraw(sdp, | |
117 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
118 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
119 | sdp->sd_fsname, | |
120 | sdp->sd_fsname, function, file, line); | |
121 | return rv; | |
122 | } | |
123 | ||
124 | /** | |
125 | * gfs2_consist_inode_i - Flag an inode consistency error and withdraw | |
126 | * Returns: -1 if this call withdrew the machine, | |
127 | * 0 if it was already withdrawn | |
128 | */ | |
129 | ||
130 | int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, | |
131 | const char *function, char *file, unsigned int line) | |
132 | { | |
feaa7bba | 133 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
134 | int rv; |
135 | rv = gfs2_lm_withdraw(sdp, | |
136 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
137 | "GFS2: fsid=%s: inode = %llu %llu\n" | |
138 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
139 | sdp->sd_fsname, | |
dbb7cae2 SW |
140 | sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino, |
141 | (unsigned long long)ip->i_no_addr, | |
b3b94faa DT |
142 | sdp->sd_fsname, function, file, line); |
143 | return rv; | |
144 | } | |
145 | ||
146 | /** | |
147 | * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw | |
148 | * Returns: -1 if this call withdrew the machine, | |
149 | * 0 if it was already withdrawn | |
150 | */ | |
151 | ||
152 | int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, | |
153 | const char *function, char *file, unsigned int line) | |
154 | { | |
155 | struct gfs2_sbd *sdp = rgd->rd_sbd; | |
156 | int rv; | |
157 | rv = gfs2_lm_withdraw(sdp, | |
158 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
159 | "GFS2: fsid=%s: RG = %llu\n" | |
160 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
161 | sdp->sd_fsname, | |
bb8d8a6f | 162 | sdp->sd_fsname, (unsigned long long)rgd->rd_addr, |
b3b94faa DT |
163 | sdp->sd_fsname, function, file, line); |
164 | return rv; | |
165 | } | |
166 | ||
167 | /** | |
168 | * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw | |
169 | * Returns: -1 if this call withdrew the machine, | |
170 | * -2 if it was already withdrawn | |
171 | */ | |
172 | ||
173 | int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
174 | const char *type, const char *function, char *file, | |
175 | unsigned int line) | |
176 | { | |
177 | int me; | |
178 | me = gfs2_lm_withdraw(sdp, | |
179 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
180 | "GFS2: fsid=%s: bh = %llu (%s)\n" | |
181 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
182 | sdp->sd_fsname, | |
382066da | 183 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, |
b3b94faa DT |
184 | sdp->sd_fsname, function, file, line); |
185 | return (me) ? -1 : -2; | |
186 | } | |
187 | ||
188 | /** | |
189 | * gfs2_metatype_check_ii - Flag a metadata type 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_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
cd915493 | 195 | u16 type, u16 t, const char *function, |
b3b94faa DT |
196 | char *file, 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 (type: exp=%u, found=%u)\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, t, |
b3b94faa DT |
205 | sdp->sd_fsname, function, file, line); |
206 | return (me) ? -1 : -2; | |
207 | } | |
208 | ||
209 | /** | |
210 | * gfs2_io_error_i - Flag an I/O error and withdraw | |
211 | * Returns: -1 if this call withdrew the machine, | |
212 | * 0 if it was already withdrawn | |
213 | */ | |
214 | ||
215 | int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, | |
216 | unsigned int line) | |
217 | { | |
218 | int rv; | |
219 | rv = gfs2_lm_withdraw(sdp, | |
220 | "GFS2: fsid=%s: fatal: I/O error\n" | |
221 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
222 | sdp->sd_fsname, | |
223 | sdp->sd_fsname, function, file, line); | |
224 | return rv; | |
225 | } | |
226 | ||
227 | /** | |
228 | * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw | |
229 | * Returns: -1 if this call withdrew the machine, | |
230 | * 0 if it was already withdrawn | |
231 | */ | |
232 | ||
233 | int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
234 | const char *function, char *file, unsigned int line) | |
235 | { | |
236 | int rv; | |
237 | rv = gfs2_lm_withdraw(sdp, | |
238 | "GFS2: fsid=%s: fatal: I/O error\n" | |
239 | "GFS2: fsid=%s: block = %llu\n" | |
240 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
241 | sdp->sd_fsname, | |
382066da | 242 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, |
b3b94faa DT |
243 | sdp->sd_fsname, function, file, line); |
244 | return rv; | |
245 | } | |
246 | ||
b3b94faa DT |
247 | void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
248 | unsigned int bit, int new_value) | |
249 | { | |
250 | unsigned int c, o, b = bit; | |
251 | int old_value; | |
252 | ||
253 | c = b / (8 * PAGE_SIZE); | |
254 | b %= 8 * PAGE_SIZE; | |
255 | o = b / 8; | |
256 | b %= 8; | |
257 | ||
258 | old_value = (bitmap[c][o] & (1 << b)); | |
259 | gfs2_assert_withdraw(sdp, !old_value != !new_value); | |
260 | ||
261 | if (new_value) | |
262 | bitmap[c][o] |= 1 << b; | |
263 | else | |
264 | bitmap[c][o] &= ~(1 << b); | |
265 | } | |
266 |