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 *type, 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, "magic number", 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_holder *freeze_gh); 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