1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
5 */
6
7 #ifndef __UTIL_DOT_H__
8 #define __UTIL_DOT_H__
9
10 #ifdef pr_fmt
11 #undef pr_fmt
12 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13 #endif
14
15 #include <linux/mempool.h>
16
17 #include "incore.h"
18
19 #define fs_emerg(fs, fmt, ...) \
20 pr_emerg("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
21 #define fs_warn(fs, fmt, ...) \
22 pr_warn("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
23 #define fs_err(fs, fmt, ...) \
24 pr_err("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
25 #define fs_info(fs, fmt, ...) \
26 pr_info("fsid=%s: " fmt, (fs)->sd_fsname, ##__VA_ARGS__)
27
28 void gfs2_assert_i(struct gfs2_sbd *sdp);
29
30 #define gfs2_assert(sdp, assertion) \
31 do { \
32 if (unlikely(!(assertion))) { \
33 gfs2_assert_i(sdp); \
34 BUG(); \
35 } \
36 } while (0)
37
38
39 void gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
40 const char *function, char *file, unsigned int line,
41 bool delayed);
42
43 #define gfs2_assert_withdraw(sdp, assertion) \
44 ({ \
45 bool _bool = (assertion); \
46 if (unlikely(!_bool)) \
47 gfs2_assert_withdraw_i((sdp), #assertion, \
48 __func__, __FILE__, __LINE__, false); \
49 !_bool; \
50 })
51
52 #define gfs2_assert_withdraw_delayed(sdp, assertion) \
53 ({ \
54 bool _bool = (assertion); \
55 if (unlikely(!_bool)) \
56 gfs2_assert_withdraw_i((sdp), #assertion, \
57 __func__, __FILE__, __LINE__, true); \
58 !_bool; \
59 })
60
61 void gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
62 const char *function, char *file, unsigned int line);
63
64 #define gfs2_assert_warn(sdp, assertion) \
65 ({ \
66 bool _bool = (assertion); \
67 if (unlikely(!_bool)) \
68 gfs2_assert_warn_i((sdp), #assertion, \
69 __func__, __FILE__, __LINE__); \
70 !_bool; \
71 })
72
73 void gfs2_consist_i(struct gfs2_sbd *sdp,
74 const char *function, char *file, unsigned int line);
75
76 #define gfs2_consist(sdp) \
77 gfs2_consist_i((sdp), __func__, __FILE__, __LINE__)
78
79
80 void gfs2_consist_inode_i(struct gfs2_inode *ip,
81 const char *function, char *file, unsigned int line);
82
83 #define gfs2_consist_inode(ip) \
84 gfs2_consist_inode_i((ip), __func__, __FILE__, __LINE__)
85
86
87 void gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd,
88 const char *function, char *file, unsigned int line);
89
90 #define gfs2_consist_rgrpd(rgd) \
91 gfs2_consist_rgrpd_i((rgd), __func__, __FILE__, __LINE__)
92
93
94 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
95 const char *function,
96 char *file, unsigned int line);
97
98 static inline int gfs2_meta_check(struct gfs2_sbd *sdp,
99 struct buffer_head *bh)
100 {
101 struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
102 u32 magic = be32_to_cpu(mh->mh_magic);
103 if (unlikely(magic != GFS2_MAGIC)) {
104 fs_err(sdp, "Magic number missing at %llu\n",
105 (unsigned long long)bh->b_blocknr);
106 return -EIO;
107 }
108 return 0;
109 }
110
111 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
112 u16 type, u16 t,
113 const char *function,
114 char *file, unsigned int line);
115
116 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
117 struct buffer_head *bh,
118 u16 type,
119 const char *function,
120 char *file, unsigned int line)
121 {
122 struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
123 u32 magic = be32_to_cpu(mh->mh_magic);
124 u16 t = be32_to_cpu(mh->mh_type);
125 if (unlikely(magic != GFS2_MAGIC))
126 return gfs2_meta_check_ii(sdp, bh, function,
127 file, line);
128 if (unlikely(t != type))
129 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
130 file, line);
131 return 0;
132 }
133
134 #define gfs2_metatype_check(sdp, bh, type) \
135 gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
136
137 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
138 u16 format)
139 {
140 struct gfs2_meta_header *mh;
141 mh = (struct gfs2_meta_header *)bh->b_data;
142 mh->mh_type = cpu_to_be32(type);
143 mh->mh_format = cpu_to_be32(format);
144 }
145
146
147 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
148 char *file, unsigned int line);
149
150 int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
151 bool verbose);
152 int gfs2_freeze_lock_shared(struct gfs2_sbd *sdp);
153 void gfs2_freeze_unlock(struct gfs2_sbd *sdp);
154
155 #define gfs2_io_error(sdp) \
156 gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__)
157
158
159 void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
160 const char *function, char *file, unsigned int line,
161 bool withdraw);
162
163 #define gfs2_io_error_bh_wd(sdp, bh) \
164 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, true)
165
166 #define gfs2_io_error_bh(sdp, bh) \
167 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, false)
168
169
170 extern struct kmem_cache *gfs2_glock_cachep;
171 extern struct kmem_cache *gfs2_glock_aspace_cachep;
172 extern struct kmem_cache *gfs2_inode_cachep;
173 extern struct kmem_cache *gfs2_bufdata_cachep;
174 extern struct kmem_cache *gfs2_rgrpd_cachep;
175 extern struct kmem_cache *gfs2_quotad_cachep;
176 extern struct kmem_cache *gfs2_qadata_cachep;
177 extern struct kmem_cache *gfs2_trans_cachep;
178 extern mempool_t *gfs2_page_pool;
179 extern struct workqueue_struct *gfs2_control_wq;
180
181 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
182 unsigned int *p)
183 {
184 unsigned int x;
185 spin_lock(>->gt_spin);
186 x = *p;
187 spin_unlock(>->gt_spin);
188 return x;
189 }
190
191 /**
192 * gfs2_withdraw_delayed - withdraw as soon as possible without deadlocks
193 * @sdp: the superblock
194 */
195 static inline void gfs2_withdraw_delayed(struct gfs2_sbd *sdp)
196 {
197 set_bit(SDF_WITHDRAWING, &sdp->sd_flags);
198 }
199
200 /**
201 * gfs2_withdrawing_or_withdrawn - test whether the file system is withdrawing
202 * or withdrawn
203 * @sdp: the superblock
204 */
205 static inline bool gfs2_withdrawing_or_withdrawn(struct gfs2_sbd *sdp)
206 {
207 return unlikely(test_bit(SDF_WITHDRAWN, &sdp->sd_flags) ||
208 test_bit(SDF_WITHDRAWING, &sdp->sd_flags));
209 }
210
211 /**
212 * gfs2_withdrawing - check if a withdraw is pending
213 * @sdp: the superblock
214 */
215 static inline bool gfs2_withdrawing(struct gfs2_sbd *sdp)
216 {
217 return unlikely(test_bit(SDF_WITHDRAWING, &sdp->sd_flags) &&
218 !test_bit(SDF_WITHDRAWN, &sdp->sd_flags));
219 }
220
221 static inline bool gfs2_withdraw_in_prog(struct gfs2_sbd *sdp)
222 {
223 return unlikely(test_bit(SDF_WITHDRAW_IN_PROG, &sdp->sd_flags));
224 }
225
226 #define gfs2_tune_get(sdp, field) \
227 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
228
229 __printf(2, 3)
230 void gfs2_lm(struct gfs2_sbd *sdp, const char *fmt, ...);
231 int gfs2_withdraw(struct gfs2_sbd *sdp);
232
233 #endif /* __UTIL_DOT_H__ */
234
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