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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>
15#include <linux/gfs2_ondisk.h>
16#include <asm/uaccess.h>
17
18#include "gfs2.h"
19#include "incore.h"
20#include "glock.h"
21#include "util.h"
22
23struct kmem_cache *gfs2_glock_cachep __read_mostly;
24struct kmem_cache *gfs2_inode_cachep __read_mostly;
25struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
26struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
27struct kmem_cache *gfs2_quotad_cachep __read_mostly;
28
29void 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
35int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
36{
37 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
38 const struct lm_lockops *lm = ls->ls_ops;
39 va_list args;
40
41 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
42 test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
43 return 0;
44
45 va_start(args, fmt);
46 vprintk(fmt, args);
47 va_end(args);
48
49 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
50 fs_err(sdp, "about to withdraw this file system\n");
51 BUG_ON(sdp->sd_args.ar_debug);
52
53 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
54
55 if (lm->lm_unmount) {
56 fs_err(sdp, "telling LM to unmount\n");
57 lm->lm_unmount(sdp);
58 }
59 fs_err(sdp, "withdrawn\n");
60 dump_stack();
61 }
62
63 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
64 panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname);
65
66 return -1;
67}
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74
75int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
76 const char *function, char *file, unsigned int line)
77{
78 int me;
79 me = gfs2_lm_withdraw(sdp,
80 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
81 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
82 sdp->sd_fsname, assertion,
83 sdp->sd_fsname, function, file, line);
84 dump_stack();
85 return (me) ? -1 : -2;
86}
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93
94int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
95 const char *function, char *file, unsigned int line)
96{
97 if (time_before(jiffies,
98 sdp->sd_last_warning +
99 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
100 return -2;
101
102 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
103 printk(KERN_WARNING
104 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
105 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
106 sdp->sd_fsname, assertion,
107 sdp->sd_fsname, function, file, line);
108
109 if (sdp->sd_args.ar_debug)
110 BUG();
111 else
112 dump_stack();
113
114 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
115 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
116 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
117 sdp->sd_fsname, assertion,
118 sdp->sd_fsname, function, file, line);
119
120 sdp->sd_last_warning = jiffies;
121
122 return -1;
123}
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130
131int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
132 char *file, unsigned int line)
133{
134 int rv;
135 rv = gfs2_lm_withdraw(sdp,
136 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
137 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
138 sdp->sd_fsname,
139 sdp->sd_fsname, function, file, line);
140 return rv;
141}
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148
149int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
150 const char *function, char *file, unsigned int line)
151{
152 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
153 int rv;
154 rv = gfs2_lm_withdraw(sdp,
155 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
156 "GFS2: fsid=%s: inode = %llu %llu\n"
157 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
158 sdp->sd_fsname,
159 sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
160 (unsigned long long)ip->i_no_addr,
161 sdp->sd_fsname, function, file, line);
162 return rv;
163}
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170
171int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
172 const char *function, char *file, unsigned int line)
173{
174 struct gfs2_sbd *sdp = rgd->rd_sbd;
175 int rv;
176 rv = gfs2_lm_withdraw(sdp,
177 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
178 "GFS2: fsid=%s: RG = %llu\n"
179 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
180 sdp->sd_fsname,
181 sdp->sd_fsname, (unsigned long long)rgd->rd_addr,
182 sdp->sd_fsname, function, file, line);
183 return rv;
184}
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191
192int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
193 const char *type, const char *function, char *file,
194 unsigned int line)
195{
196 int me;
197 me = gfs2_lm_withdraw(sdp,
198 "GFS2: fsid=%s: fatal: invalid metadata block\n"
199 "GFS2: fsid=%s: bh = %llu (%s)\n"
200 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
201 sdp->sd_fsname,
202 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type,
203 sdp->sd_fsname, function, file, line);
204 return (me) ? -1 : -2;
205}
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212
213int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
214 u16 type, u16 t, const char *function,
215 char *file, unsigned int line)
216{
217 int me;
218 me = gfs2_lm_withdraw(sdp,
219 "GFS2: fsid=%s: fatal: invalid metadata block\n"
220 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
221 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
222 sdp->sd_fsname,
223 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t,
224 sdp->sd_fsname, function, file, line);
225 return (me) ? -1 : -2;
226}
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234int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
235 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: function = %s, file = %s, line = %u\n",
241 sdp->sd_fsname,
242 sdp->sd_fsname, function, file, line);
243 return rv;
244}
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252int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
253 const char *function, char *file, unsigned int line)
254{
255 int rv;
256 rv = gfs2_lm_withdraw(sdp,
257 "GFS2: fsid=%s: fatal: I/O error\n"
258 "GFS2: fsid=%s: block = %llu\n"
259 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
260 sdp->sd_fsname,
261 sdp->sd_fsname, (unsigned long long)bh->b_blocknr,
262 sdp->sd_fsname, function, file, line);
263 return rv;
264}
265
266void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
267 unsigned int bit, int new_value)
268{
269 unsigned int c, o, b = bit;
270 int old_value;
271
272 c = b / (8 * PAGE_SIZE);
273 b %= 8 * PAGE_SIZE;
274 o = b / 8;
275 b %= 8;
276
277 old_value = (bitmap[c][o] & (1 << b));
278 gfs2_assert_withdraw(sdp, !old_value != !new_value);
279
280 if (new_value)
281 bitmap[c][o] |= 1 << b;
282 else
283 bitmap[c][o] &= ~(1 << b);
284}
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