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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 | |
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> | |
5c676f6d | 16 | #include <linux/gfs2_ondisk.h> |
b3b94faa DT |
17 | #include <asm/uaccess.h> |
18 | ||
19 | #include "gfs2.h" | |
5c676f6d SW |
20 | #include "lm_interface.h" |
21 | #include "incore.h" | |
b3b94faa DT |
22 | #include "glock.h" |
23 | #include "lm.h" | |
5c676f6d | 24 | #include "util.h" |
b3b94faa DT |
25 | |
26 | kmem_cache_t *gfs2_glock_cachep __read_mostly; | |
27 | kmem_cache_t *gfs2_inode_cachep __read_mostly; | |
28 | kmem_cache_t *gfs2_bufdata_cachep __read_mostly; | |
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 | ||
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39 | * -2 if it was already withdrawn | |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 | ||
42 | int 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); | |
18ec7d5c | 51 | dump_stack(); |
b3b94faa DT |
52 | 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 | ||
61 | int 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(); | |
18ec7d5c SW |
77 | else |
78 | dump_stack(); | |
b3b94faa DT |
79 | |
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 | ||
91 | int 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 | ||
109 | int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide, | |
110 | const char *function, char *file, unsigned int line) | |
111 | { | |
feaa7bba | 112 | struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); |
b3b94faa DT |
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, | |
382066da SW |
119 | sdp->sd_fsname, (unsigned long long)ip->i_num.no_formal_ino, |
120 | (unsigned long long)ip->i_num.no_addr, | |
b3b94faa DT |
121 | sdp->sd_fsname, function, file, line); |
122 | return rv; | |
123 | } | |
124 | ||
125 | /** | |
126 | * gfs2_consist_rgrpd_i - Flag a RG 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_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide, | |
132 | const char *function, char *file, unsigned int line) | |
133 | { | |
134 | struct gfs2_sbd *sdp = rgd->rd_sbd; | |
135 | int rv; | |
136 | rv = gfs2_lm_withdraw(sdp, | |
137 | "GFS2: fsid=%s: fatal: filesystem consistency error\n" | |
138 | "GFS2: fsid=%s: RG = %llu\n" | |
139 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
140 | sdp->sd_fsname, | |
382066da | 141 | sdp->sd_fsname, (unsigned long long)rgd->rd_ri.ri_addr, |
b3b94faa DT |
142 | sdp->sd_fsname, function, file, line); |
143 | return rv; | |
144 | } | |
145 | ||
146 | /** | |
147 | * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw | |
148 | * Returns: -1 if this call withdrew the machine, | |
149 | * -2 if it was already withdrawn | |
150 | */ | |
151 | ||
152 | int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
153 | const char *type, const char *function, char *file, | |
154 | unsigned int line) | |
155 | { | |
156 | int me; | |
157 | me = gfs2_lm_withdraw(sdp, | |
158 | "GFS2: fsid=%s: fatal: invalid metadata block\n" | |
159 | "GFS2: fsid=%s: bh = %llu (%s)\n" | |
160 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
161 | sdp->sd_fsname, | |
382066da | 162 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, |
b3b94faa DT |
163 | sdp->sd_fsname, function, file, line); |
164 | return (me) ? -1 : -2; | |
165 | } | |
166 | ||
167 | /** | |
168 | * gfs2_metatype_check_ii - Flag a metadata type 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_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
174 | uint16_t type, uint16_t t, const char *function, | |
175 | char *file, 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 (type: exp=%u, found=%u)\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, t, |
b3b94faa DT |
184 | sdp->sd_fsname, function, file, line); |
185 | return (me) ? -1 : -2; | |
186 | } | |
187 | ||
188 | /** | |
189 | * gfs2_io_error_i - Flag an I/O error and withdraw | |
190 | * Returns: -1 if this call withdrew the machine, | |
191 | * 0 if it was already withdrawn | |
192 | */ | |
193 | ||
194 | int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file, | |
195 | unsigned int line) | |
196 | { | |
197 | int rv; | |
198 | rv = gfs2_lm_withdraw(sdp, | |
199 | "GFS2: fsid=%s: fatal: I/O error\n" | |
200 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
201 | sdp->sd_fsname, | |
202 | sdp->sd_fsname, function, file, line); | |
203 | return rv; | |
204 | } | |
205 | ||
206 | /** | |
207 | * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw | |
208 | * Returns: -1 if this call withdrew the machine, | |
209 | * 0 if it was already withdrawn | |
210 | */ | |
211 | ||
212 | int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, | |
213 | const char *function, char *file, unsigned int line) | |
214 | { | |
215 | int rv; | |
216 | rv = gfs2_lm_withdraw(sdp, | |
217 | "GFS2: fsid=%s: fatal: I/O error\n" | |
218 | "GFS2: fsid=%s: block = %llu\n" | |
219 | "GFS2: fsid=%s: function = %s, file = %s, line = %u\n", | |
220 | sdp->sd_fsname, | |
382066da | 221 | sdp->sd_fsname, (unsigned long long)bh->b_blocknr, |
b3b94faa DT |
222 | sdp->sd_fsname, function, file, line); |
223 | return rv; | |
224 | } | |
225 | ||
b3b94faa DT |
226 | void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap, |
227 | unsigned int bit, int new_value) | |
228 | { | |
229 | unsigned int c, o, b = bit; | |
230 | int old_value; | |
231 | ||
232 | c = b / (8 * PAGE_SIZE); | |
233 | b %= 8 * PAGE_SIZE; | |
234 | o = b / 8; | |
235 | b %= 8; | |
236 | ||
237 | old_value = (bitmap[c][o] & (1 << b)); | |
238 | gfs2_assert_withdraw(sdp, !old_value != !new_value); | |
239 | ||
240 | if (new_value) | |
241 | bitmap[c][o] |= 1 << b; | |
242 | else | |
243 | bitmap[c][o] &= ~(1 << b); | |
244 | } | |
245 |