blob: 424a0774eda81268b1daf3eff28ae82a636c6ad8 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -04003 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
David Teiglandb3b94fa2006-01-16 16:50:04 +000010#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>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050015#include <linux/gfs2_ondisk.h>
Fabio Massimo Di Nitto7d308592006-09-19 07:56:29 +020016#include <linux/lm_interface.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000017#include <asm/uaccess.h>
18
19#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050020#include "incore.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000021#include "glock.h"
22#include "lm.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050023#include "util.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000024
Christoph Lametere18b8902006-12-06 20:33:20 -080025struct kmem_cache *gfs2_glock_cachep __read_mostly;
26struct kmem_cache *gfs2_inode_cachep __read_mostly;
27struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
David Teiglandb3b94fa2006-01-16 16:50:04 +000028
David Teiglandb3b94fa2006-01-16 16:50:04 +000029void 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
35/**
36 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
37 * Returns: -1 if this call withdrew the machine,
38 * -2 if it was already withdrawn
39 */
40
41int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
42 const char *function, char *file, unsigned int line)
43{
44 int me;
45 me = gfs2_lm_withdraw(sdp,
46 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
47 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
48 sdp->sd_fsname, assertion,
49 sdp->sd_fsname, function, file, line);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +000050 dump_stack();
David Teiglandb3b94fa2006-01-16 16:50:04 +000051 return (me) ? -1 : -2;
52}
53
54/**
55 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
56 * Returns: -1 if we printed something
57 * -2 if we didn't
58 */
59
60int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
61 const char *function, char *file, unsigned int line)
62{
63 if (time_before(jiffies,
64 sdp->sd_last_warning +
65 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
66 return -2;
67
68 printk(KERN_WARNING
69 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
70 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
71 sdp->sd_fsname, assertion,
72 sdp->sd_fsname, function, file, line);
73
74 if (sdp->sd_args.ar_debug)
75 BUG();
Steven Whitehouse18ec7d52006-02-08 11:50:51 +000076 else
77 dump_stack();
David Teiglandb3b94fa2006-01-16 16:50:04 +000078
79 sdp->sd_last_warning = jiffies;
80
81 return -1;
82}
83
84/**
85 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
86 * Returns: -1 if this call withdrew the machine,
87 * 0 if it was already withdrawn
88 */
89
90int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
91 char *file, unsigned int line)
92{
93 int rv;
94 rv = gfs2_lm_withdraw(sdp,
95 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
96 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
97 sdp->sd_fsname,
98 sdp->sd_fsname, function, file, line);
99 return rv;
100}
101
102/**
103 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
104 * Returns: -1 if this call withdrew the machine,
105 * 0 if it was already withdrawn
106 */
107
108int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
109 const char *function, char *file, unsigned int line)
110{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400111 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000112 int rv;
113 rv = gfs2_lm_withdraw(sdp,
114 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
115 "GFS2: fsid=%s: inode = %llu %llu\n"
116 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
117 sdp->sd_fsname,
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100118 sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
119 (unsigned long long)ip->i_no_addr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000120 sdp->sd_fsname, function, file, line);
121 return rv;
122}
123
124/**
125 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
126 * Returns: -1 if this call withdrew the machine,
127 * 0 if it was already withdrawn
128 */
129
130int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
131 const char *function, char *file, unsigned int line)
132{
133 struct gfs2_sbd *sdp = rgd->rd_sbd;
134 int rv;
135 rv = gfs2_lm_withdraw(sdp,
136 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
137 "GFS2: fsid=%s: RG = %llu\n"
138 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
139 sdp->sd_fsname,
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100140 sdp->sd_fsname, (unsigned long long)rgd->rd_addr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000141 sdp->sd_fsname, function, file, line);
142 return rv;
143}
144
145/**
146 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
147 * Returns: -1 if this call withdrew the machine,
148 * -2 if it was already withdrawn
149 */
150
151int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
152 const char *type, const char *function, char *file,
153 unsigned int line)
154{
155 int me;
156 me = gfs2_lm_withdraw(sdp,
157 "GFS2: fsid=%s: fatal: invalid metadata block\n"
158 "GFS2: fsid=%s: bh = %llu (%s)\n"
159 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
160 sdp->sd_fsname,
Steven Whitehouse382066d2006-05-24 10:22:09 -0400161 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000162 sdp->sd_fsname, function, file, line);
163 return (me) ? -1 : -2;
164}
165
166/**
167 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
168 * Returns: -1 if this call withdrew the machine,
169 * -2 if it was already withdrawn
170 */
171
172int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
Steven Whitehousecd915492006-09-04 12:49:07 -0400173 u16 type, u16 t, const char *function,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000174 char *file, unsigned int line)
175{
176 int me;
177 me = gfs2_lm_withdraw(sdp,
178 "GFS2: fsid=%s: fatal: invalid metadata block\n"
179 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
180 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
181 sdp->sd_fsname,
Steven Whitehouse382066d2006-05-24 10:22:09 -0400182 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000183 sdp->sd_fsname, function, file, line);
184 return (me) ? -1 : -2;
185}
186
187/**
188 * gfs2_io_error_i - Flag an I/O error and withdraw
189 * Returns: -1 if this call withdrew the machine,
190 * 0 if it was already withdrawn
191 */
192
193int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
194 unsigned int line)
195{
196 int rv;
197 rv = gfs2_lm_withdraw(sdp,
198 "GFS2: fsid=%s: fatal: I/O error\n"
199 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
200 sdp->sd_fsname,
201 sdp->sd_fsname, function, file, line);
202 return rv;
203}
204
205/**
206 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
207 * Returns: -1 if this call withdrew the machine,
208 * 0 if it was already withdrawn
209 */
210
211int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
212 const char *function, char *file, unsigned int line)
213{
214 int rv;
215 rv = gfs2_lm_withdraw(sdp,
216 "GFS2: fsid=%s: fatal: I/O error\n"
217 "GFS2: fsid=%s: block = %llu\n"
218 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
219 sdp->sd_fsname,
Steven Whitehouse382066d2006-05-24 10:22:09 -0400220 sdp->sd_fsname, (unsigned long long)bh->b_blocknr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000221 sdp->sd_fsname, function, file, line);
222 return rv;
223}
224
David Teiglandb3b94fa2006-01-16 16:50:04 +0000225void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
226 unsigned int bit, int new_value)
227{
228 unsigned int c, o, b = bit;
229 int old_value;
230
231 c = b / (8 * PAGE_SIZE);
232 b %= 8 * PAGE_SIZE;
233 o = b / 8;
234 b %= 8;
235
236 old_value = (bitmap[c][o] & (1 << b));
237 gfs2_assert_withdraw(sdp, !old_value != !new_value);
238
239 if (new_value)
240 bitmap[c][o] |= 1 << b;
241 else
242 bitmap[c][o] &= ~(1 << b);
243}
244