2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
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.
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>
16 #include <asm/semaphore.h>
17 #include <asm/uaccess.h>
23 kmem_cache_t
*gfs2_glock_cachep __read_mostly
;
24 kmem_cache_t
*gfs2_inode_cachep __read_mostly
;
25 kmem_cache_t
*gfs2_bufdata_cachep __read_mostly
;
27 uint32_t gfs2_disk_hash(const char *data
, int len
)
29 return crc32_le(0xFFFFFFFF, data
, len
) ^ 0xFFFFFFFF;
32 void gfs2_assert_i(struct gfs2_sbd
*sdp
)
34 printk(KERN_EMERG
"GFS2: fsid=%s: fatal assertion failed\n",
39 * gfs2_assert_withdraw_i - Cause the machine to withdraw if @assertion is false
40 * Returns: -1 if this call withdrew the machine,
41 * -2 if it was already withdrawn
44 int gfs2_assert_withdraw_i(struct gfs2_sbd
*sdp
, char *assertion
,
45 const char *function
, char *file
, unsigned int line
)
48 me
= gfs2_lm_withdraw(sdp
,
49 "GFS2: fsid=%s: fatal: assertion \"%s\" failed\n"
50 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
51 sdp
->sd_fsname
, assertion
,
52 sdp
->sd_fsname
, function
, file
, line
);
53 return (me
) ? -1 : -2;
57 * gfs2_assert_warn_i - Print a message to the console if @assertion is false
58 * Returns: -1 if we printed something
62 int gfs2_assert_warn_i(struct gfs2_sbd
*sdp
, char *assertion
,
63 const char *function
, char *file
, unsigned int line
)
65 if (time_before(jiffies
,
66 sdp
->sd_last_warning
+
67 gfs2_tune_get(sdp
, gt_complain_secs
) * HZ
))
71 "GFS2: fsid=%s: warning: assertion \"%s\" failed\n"
72 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
73 sdp
->sd_fsname
, assertion
,
74 sdp
->sd_fsname
, function
, file
, line
);
76 if (sdp
->sd_args
.ar_debug
)
79 sdp
->sd_last_warning
= jiffies
;
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87 * 0 if it was already withdrawn
90 int gfs2_consist_i(struct gfs2_sbd
*sdp
, int cluster_wide
, const char *function
,
91 char *file
, unsigned int line
)
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",
98 sdp
->sd_fsname
, function
, file
, line
);
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
108 int gfs2_consist_inode_i(struct gfs2_inode
*ip
, int cluster_wide
,
109 const char *function
, char *file
, unsigned int line
)
111 struct gfs2_sbd
*sdp
= ip
->i_sbd
;
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",
118 sdp
->sd_fsname
, ip
->i_num
.no_formal_ino
, ip
->i_num
.no_addr
,
119 sdp
->sd_fsname
, function
, file
, line
);
124 * gfs2_consist_rgrpd_i - Flag a RG consistency error and withdraw
125 * Returns: -1 if this call withdrew the machine,
126 * 0 if it was already withdrawn
129 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd
*rgd
, int cluster_wide
,
130 const char *function
, char *file
, unsigned int line
)
132 struct gfs2_sbd
*sdp
= rgd
->rd_sbd
;
134 rv
= gfs2_lm_withdraw(sdp
,
135 "GFS2: fsid=%s: fatal: filesystem consistency error\n"
136 "GFS2: fsid=%s: RG = %llu\n"
137 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
139 sdp
->sd_fsname
, rgd
->rd_ri
.ri_addr
,
140 sdp
->sd_fsname
, function
, file
, line
);
145 * gfs2_meta_check_ii - Flag a magic number consistency error and withdraw
146 * Returns: -1 if this call withdrew the machine,
147 * -2 if it was already withdrawn
150 int gfs2_meta_check_ii(struct gfs2_sbd
*sdp
, struct buffer_head
*bh
,
151 const char *type
, const char *function
, char *file
,
155 me
= gfs2_lm_withdraw(sdp
,
156 "GFS2: fsid=%s: fatal: invalid metadata block\n"
157 "GFS2: fsid=%s: bh = %llu (%s)\n"
158 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
160 sdp
->sd_fsname
, (uint64_t)bh
->b_blocknr
, type
,
161 sdp
->sd_fsname
, function
, file
, line
);
162 return (me
) ? -1 : -2;
166 * gfs2_metatype_check_ii - Flag a metadata type consistency error and withdraw
167 * Returns: -1 if this call withdrew the machine,
168 * -2 if it was already withdrawn
171 int gfs2_metatype_check_ii(struct gfs2_sbd
*sdp
, struct buffer_head
*bh
,
172 uint16_t type
, uint16_t t
, const char *function
,
173 char *file
, unsigned int line
)
176 me
= gfs2_lm_withdraw(sdp
,
177 "GFS2: fsid=%s: fatal: invalid metadata block\n"
178 "GFS2: fsid=%s: bh = %llu (type: exp=%u, found=%u)\n"
179 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
181 sdp
->sd_fsname
, (uint64_t)bh
->b_blocknr
, type
, t
,
182 sdp
->sd_fsname
, function
, file
, line
);
183 return (me
) ? -1 : -2;
187 * gfs2_io_error_i - Flag an I/O error and withdraw
188 * Returns: -1 if this call withdrew the machine,
189 * 0 if it was already withdrawn
192 int gfs2_io_error_i(struct gfs2_sbd
*sdp
, const char *function
, char *file
,
196 rv
= gfs2_lm_withdraw(sdp
,
197 "GFS2: fsid=%s: fatal: I/O error\n"
198 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
200 sdp
->sd_fsname
, function
, file
, line
);
205 * gfs2_io_error_bh_i - Flag a buffer I/O error and withdraw
206 * Returns: -1 if this call withdrew the machine,
207 * 0 if it was already withdrawn
210 int gfs2_io_error_bh_i(struct gfs2_sbd
*sdp
, struct buffer_head
*bh
,
211 const char *function
, char *file
, unsigned int line
)
214 rv
= gfs2_lm_withdraw(sdp
,
215 "GFS2: fsid=%s: fatal: I/O error\n"
216 "GFS2: fsid=%s: block = %llu\n"
217 "GFS2: fsid=%s: function = %s, file = %s, line = %u\n",
219 sdp
->sd_fsname
, (uint64_t)bh
->b_blocknr
,
220 sdp
->sd_fsname
, function
, file
, line
);
225 * gfs2_add_bh_to_ub - copy a buffer up to user space
226 * @ub: the structure representing where to copy
232 int gfs2_add_bh_to_ub(struct gfs2_user_buffer
*ub
, struct buffer_head
*bh
)
234 uint64_t blkno
= bh
->b_blocknr
;
236 if (ub
->ub_count
+ sizeof(uint64_t) + bh
->b_size
> ub
->ub_size
)
239 if (copy_to_user(ub
->ub_data
+ ub
->ub_count
,
243 ub
->ub_count
+= sizeof(uint64_t);
245 if (copy_to_user(ub
->ub_data
+ ub
->ub_count
,
249 ub
->ub_count
+= bh
->b_size
;
254 void gfs2_icbit_munge(struct gfs2_sbd
*sdp
, unsigned char **bitmap
,
255 unsigned int bit
, int new_value
)
257 unsigned int c
, o
, b
= bit
;
260 c
= b
/ (8 * PAGE_SIZE
);
265 old_value
= (bitmap
[c
][o
] & (1 << b
));
266 gfs2_assert_withdraw(sdp
, !old_value
!= !new_value
);
269 bitmap
[c
][o
] |= 1 << b
;
271 bitmap
[c
][o
] &= ~(1 << b
);