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 void 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 void 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 gfs2_meta_check_ii(sdp, bh, function, 127 file, line); 128 return -EIO; 129 } 130 if (unlikely(t != type)) { 131 gfs2_metatype_check_ii(sdp, bh, type, t, function, 132 file, line); 133 return -EIO; 134 } 135 return 0; 136 } 137 138 #define gfs2_metatype_check(sdp, bh, type) \ 139 gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__) 140 141 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type, 142 u16 format) 143 { 144 struct gfs2_meta_header *mh; 145 mh = (struct gfs2_meta_header *)bh->b_data; 146 mh->mh_type = cpu_to_be32(type); 147 mh->mh_format = cpu_to_be32(format); 148 } 149 150 151 void gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function, 152 char *file, unsigned int line); 153 154 int check_journal_clean(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd, 155 bool verbose); 156 int gfs2_freeze_lock_shared(struct gfs2_sbd *sdp); 157 void gfs2_freeze_unlock(struct gfs2_sbd *sdp); 158 159 #define gfs2_io_error(sdp) \ 160 gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__) 161 162 163 void gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh, 164 const char *function, char *file, unsigned int line, 165 bool withdraw); 166 167 #define gfs2_io_error_bh_wd(sdp, bh) \ 168 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, true) 169 170 #define gfs2_io_error_bh(sdp, bh) \ 171 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__, false) 172 173 174 extern struct kmem_cache *gfs2_glock_cachep; 175 extern struct kmem_cache *gfs2_glock_aspace_cachep; 176 extern struct kmem_cache *gfs2_inode_cachep; 177 extern struct kmem_cache *gfs2_bufdata_cachep; 178 extern struct kmem_cache *gfs2_rgrpd_cachep; 179 extern struct kmem_cache *gfs2_quotad_cachep; 180 extern struct kmem_cache *gfs2_qadata_cachep; 181 extern struct kmem_cache *gfs2_trans_cachep; 182 extern mempool_t *gfs2_page_pool; 183 extern struct workqueue_struct *gfs2_control_wq; 184 185 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt, 186 unsigned int *p) 187 { 188 unsigned int x; 189 spin_lock(>->gt_spin); 190 x = *p; 191 spin_unlock(>->gt_spin); 192 return x; 193 } 194 195 /** 196 * gfs2_withdraw_delayed - withdraw as soon as possible without deadlocks 197 * @sdp: the superblock 198 */ 199 static inline void gfs2_withdraw_delayed(struct gfs2_sbd *sdp) 200 { 201 set_bit(SDF_WITHDRAWING, &sdp->sd_flags); 202 } 203 204 /** 205 * gfs2_withdrawing_or_withdrawn - test whether the file system is withdrawing 206 * or withdrawn 207 * @sdp: the superblock 208 */ 209 static inline bool gfs2_withdrawing_or_withdrawn(struct gfs2_sbd *sdp) 210 { 211 return unlikely(test_bit(SDF_WITHDRAWN, &sdp->sd_flags) || 212 test_bit(SDF_WITHDRAWING, &sdp->sd_flags)); 213 } 214 215 /** 216 * gfs2_withdrawing - check if a withdraw is pending 217 * @sdp: the superblock 218 */ 219 static inline bool gfs2_withdrawing(struct gfs2_sbd *sdp) 220 { 221 return unlikely(test_bit(SDF_WITHDRAWING, &sdp->sd_flags) && 222 !test_bit(SDF_WITHDRAWN, &sdp->sd_flags)); 223 } 224 225 static inline bool gfs2_withdraw_in_prog(struct gfs2_sbd *sdp) 226 { 227 return unlikely(test_bit(SDF_WITHDRAW_IN_PROG, &sdp->sd_flags)); 228 } 229 230 #define gfs2_tune_get(sdp, field) \ 231 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field) 232 233 __printf(2, 3) 234 void gfs2_lm(struct gfs2_sbd *sdp, const char *fmt, ...); 235 void gfs2_withdraw(struct gfs2_sbd *sdp); 236 237 #endif /* __UTIL_DOT_H__ */ 238