blob: 9e7765e8e7b06f98a911a6de1e7150d65a27f337 [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/spinlock.h>
11#include <linux/completion.h>
12#include <linux/buffer_head.h>
13#include <linux/crc32.h>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050014#include <linux/gfs2_ondisk.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000015#include <asm/uaccess.h>
16
17#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050018#include "incore.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000019#include "glock.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050020#include "util.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000021
Christoph Lametere18b8902006-12-06 20:33:20 -080022struct kmem_cache *gfs2_glock_cachep __read_mostly;
Steven Whitehouse009d8512009-12-08 12:12:13 +000023struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
Christoph Lametere18b8902006-12-06 20:33:20 -080024struct kmem_cache *gfs2_inode_cachep __read_mostly;
25struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
Bob Peterson6bdd9be2008-01-28 17:20:26 -060026struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
Steven Whitehouse37b2c832008-11-17 14:25:37 +000027struct kmem_cache *gfs2_quotad_cachep __read_mostly;
Steven Whitehouse75ca61c2012-03-08 12:10:23 +000028mempool_t *gfs2_bh_pool __read_mostly;
David Teiglandb3b94fa2006-01-16 16:50:04 +000029
David Teiglandb3b94fa2006-01-16 16:50:04 +000030void 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
Steven Whitehouseda755fd2008-01-30 15:34:04 +000036int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...)
37{
Steven Whitehousef057f6c2009-01-12 10:43:39 +000038 struct lm_lockstruct *ls = &sdp->sd_lockstruct;
39 const struct lm_lockops *lm = ls->ls_ops;
Steven Whitehouseda755fd2008-01-30 15:34:04 +000040 va_list args;
41
Bob Petersond34843d2009-08-24 10:44:18 +010042 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW &&
43 test_and_set_bit(SDF_SHUTDOWN, &sdp->sd_flags))
Steven Whitehouseda755fd2008-01-30 15:34:04 +000044 return 0;
45
46 va_start(args, fmt);
47 vprintk(fmt, args);
48 va_end(args);
49
Bob Petersond34843d2009-08-24 10:44:18 +010050 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW) {
51 fs_err(sdp, "about to withdraw this file system\n");
52 BUG_ON(sdp->sd_args.ar_debug);
Steven Whitehouseda755fd2008-01-30 15:34:04 +000053
Bob Petersond34843d2009-08-24 10:44:18 +010054 kobject_uevent(&sdp->sd_kobj, KOBJ_OFFLINE);
Steven Whitehousef057f6c2009-01-12 10:43:39 +000055
Bob Petersond34843d2009-08-24 10:44:18 +010056 if (lm->lm_unmount) {
57 fs_err(sdp, "telling LM to unmount\n");
58 lm->lm_unmount(sdp);
59 }
60 fs_err(sdp, "withdrawn\n");
61 dump_stack();
Steven Whitehousef057f6c2009-01-12 10:43:39 +000062 }
Bob Petersond34843d2009-08-24 10:44:18 +010063
64 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
65 panic("GFS2: fsid=%s: panic requested.\n", sdp->sd_fsname);
Steven Whitehouseda755fd2008-01-30 15:34:04 +000066
67 return -1;
68}
69
David Teiglandb3b94fa2006-01-16 16:50:04 +000070/**
71 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
72 * Returns: -1 if this call withdrew the machine,
73 * -2 if it was already withdrawn
74 */
75
76int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
77 const char *function, char *file, unsigned int line)
78{
79 int me;
80 me = gfs2_lm_withdraw(sdp,
81 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
82 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
83 sdp->sd_fsname, assertion,
84 sdp->sd_fsname, function, file, line);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +000085 dump_stack();
David Teiglandb3b94fa2006-01-16 16:50:04 +000086 return (me) ? -1 : -2;
87}
88
89/**
90 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
91 * Returns: -1 if we printed something
92 * -2 if we didn't
93 */
94
95int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
96 const char *function, char *file, unsigned int line)
97{
98 if (time_before(jiffies,
99 sdp->sd_last_warning +
100 gfs2_tune_get(sdp, gt_complain_secs) * HZ))
101 return -2;
102
Bob Petersond34843d2009-08-24 10:44:18 +0100103 if (sdp->sd_args.ar_errors == GFS2_ERRORS_WITHDRAW)
104 printk(KERN_WARNING
105 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
106 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
107 sdp->sd_fsname, assertion,
108 sdp->sd_fsname, function, file, line);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000109
110 if (sdp->sd_args.ar_debug)
111 BUG();
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000112 else
113 dump_stack();
David Teiglandb3b94fa2006-01-16 16:50:04 +0000114
Bob Petersond34843d2009-08-24 10:44:18 +0100115 if (sdp->sd_args.ar_errors == GFS2_ERRORS_PANIC)
116 panic("GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
117 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
118 sdp->sd_fsname, assertion,
119 sdp->sd_fsname, function, file, line);
120
David Teiglandb3b94fa2006-01-16 16:50:04 +0000121 sdp->sd_last_warning = jiffies;
122
123 return -1;
124}
125
126/**
127 * gfs2_consist_i - Flag a filesystem consistency error and withdraw
128 * Returns: -1 if this call withdrew the machine,
129 * 0 if it was already withdrawn
130 */
131
132int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide, const char *function,
133 char *file, unsigned int line)
134{
135 int rv;
136 rv = gfs2_lm_withdraw(sdp,
137 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
138 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
139 sdp->sd_fsname,
140 sdp->sd_fsname, function, file, line);
141 return rv;
142}
143
144/**
145 * gfs2_consist_inode_i - Flag an inode consistency error and withdraw
146 * Returns: -1 if this call withdrew the machine,
147 * 0 if it was already withdrawn
148 */
149
150int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
151 const char *function, char *file, unsigned int line)
152{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400153 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000154 int rv;
155 rv = gfs2_lm_withdraw(sdp,
156 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
157 "GFS2: fsid=%s: inode = %llu %llu\n"
158 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
159 sdp->sd_fsname,
Steven Whitehousedbb7cae2007-05-15 15:37:50 +0100160 sdp->sd_fsname, (unsigned long long)ip->i_no_formal_ino,
161 (unsigned long long)ip->i_no_addr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000162 sdp->sd_fsname, function, file, line);
163 return rv;
164}
165
166/**
167 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
168 * Returns: -1 if this call withdrew the machine,
169 * 0 if it was already withdrawn
170 */
171
172int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
173 const char *function, char *file, unsigned int line)
174{
175 struct gfs2_sbd *sdp = rgd->rd_sbd;
176 int rv;
177 rv = gfs2_lm_withdraw(sdp,
178 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
179 "GFS2: fsid=%s: RG = %llu\n"
180 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
181 sdp->sd_fsname,
Steven Whitehousebb8d8a62007-06-01 14:11:58 +0100182 sdp->sd_fsname, (unsigned long long)rgd->rd_addr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000183 sdp->sd_fsname, function, file, line);
184 return rv;
185}
186
187/**
188 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
189 * Returns: -1 if this call withdrew the machine,
190 * -2 if it was already withdrawn
191 */
192
193int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
194 const char *type, const char *function, char *file,
195 unsigned int line)
196{
197 int me;
198 me = gfs2_lm_withdraw(sdp,
199 "GFS2: fsid=%s: fatal: invalid metadata block\n"
200 "GFS2: fsid=%s: bh = %llu (%s)\n"
201 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
202 sdp->sd_fsname,
Steven Whitehouse382066d2006-05-24 10:22:09 -0400203 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000204 sdp->sd_fsname, function, file, line);
205 return (me) ? -1 : -2;
206}
207
208/**
209 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
210 * Returns: -1 if this call withdrew the machine,
211 * -2 if it was already withdrawn
212 */
213
214int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
Steven Whitehousecd915492006-09-04 12:49:07 -0400215 u16 type, u16 t, const char *function,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000216 char *file, unsigned int line)
217{
218 int me;
219 me = gfs2_lm_withdraw(sdp,
220 "GFS2: fsid=%s: fatal: invalid metadata block\n"
221 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
222 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
223 sdp->sd_fsname,
Steven Whitehouse382066d2006-05-24 10:22:09 -0400224 sdp->sd_fsname, (unsigned long long)bh->b_blocknr, type, t,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000225 sdp->sd_fsname, function, file, line);
226 return (me) ? -1 : -2;
227}
228
229/**
230 * gfs2_io_error_i - Flag an I/O error and withdraw
231 * Returns: -1 if this call withdrew the machine,
232 * 0 if it was already withdrawn
233 */
234
235int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, char *file,
236 unsigned int line)
237{
238 int rv;
239 rv = gfs2_lm_withdraw(sdp,
240 "GFS2: fsid=%s: fatal: I/O error\n"
241 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
242 sdp->sd_fsname,
243 sdp->sd_fsname, function, file, line);
244 return rv;
245}
246
247/**
248 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
249 * Returns: -1 if this call withdrew the machine,
250 * 0 if it was already withdrawn
251 */
252
253int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
254 const char *function, char *file, unsigned int line)
255{
256 int rv;
257 rv = gfs2_lm_withdraw(sdp,
258 "GFS2: fsid=%s: fatal: I/O error\n"
259 "GFS2: fsid=%s: block = %llu\n"
260 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
261 sdp->sd_fsname,
Steven Whitehouse382066d2006-05-24 10:22:09 -0400262 sdp->sd_fsname, (unsigned long long)bh->b_blocknr,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000263 sdp->sd_fsname, function, file, line);
264 return rv;
265}
266
David Teiglandb3b94fa2006-01-16 16:50:04 +0000267void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
268 unsigned int bit, int new_value)
269{
270 unsigned int c, o, b = bit;
271 int old_value;
272
273 c = b / (8 * PAGE_SIZE);
274 b %= 8 * PAGE_SIZE;
275 o = b / 8;
276 b %= 8;
277
278 old_value = (bitmap[c][o] & (1 << b));
279 gfs2_assert_withdraw(sdp, !old_value != !new_value);
280
281 if (new_value)
282 bitmap[c][o] |= 1 << b;
283 else
284 bitmap[c][o] &= ~(1 << b);
285}
286