fs/gfs2/util.h

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   4  *
   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 version 2.
   8  */
   9
  10 #ifndef __UTIL_DOT_H__
  11 #define __UTIL_DOT_H__
  12
  13 #include <linux/mempool.h>
  14
  15 #include "incore.h"
  16
  17 #define fs_printk(level, fs, fmt, arg...) \
  18         printk(level "GFS2: fsid=%s: " fmt , (fs)->sd_fsname , ## arg)
  19
  20 #define fs_info(fs, fmt, arg...) \
  21         fs_printk(KERN_INFO , fs , fmt , ## arg)
  22
  23 #define fs_warn(fs, fmt, arg...) \
  24         fs_printk(KERN_WARNING , fs , fmt , ## arg)
  25
  26 #define fs_err(fs, fmt, arg...) \
  27         fs_printk(KERN_ERR, fs , fmt , ## arg)
  28
  29
  30 void gfs2_assert_i(struct gfs2_sbd *sdp);
  31
  32 #define gfs2_assert(sdp, assertion) \
  33 do { \
  34         if (unlikely(!(assertion))) { \
  35                 gfs2_assert_i(sdp); \
  36                 BUG(); \
  37         } \
  38 } while (0)
  39
  40
  41 int gfs2_assert_withdraw_i(struct gfs2_sbd *sdp, char *assertion,
  42                            const char *function, char *file, unsigned int line);
  43
  44 #define gfs2_assert_withdraw(sdp, assertion) \
  45 ((likely(assertion)) ? 0 : gfs2_assert_withdraw_i((sdp), #assertion, \
  46                                         __func__, __FILE__, __LINE__))
  47
  48
  49 int gfs2_assert_warn_i(struct gfs2_sbd *sdp, char *assertion,
  50                        const char *function, char *file, unsigned int line);
  51
  52 #define gfs2_assert_warn(sdp, assertion) \
  53 ((likely(assertion)) ? 0 : gfs2_assert_warn_i((sdp), #assertion, \
  54                                         __func__, __FILE__, __LINE__))
  55
  56
  57 int gfs2_consist_i(struct gfs2_sbd *sdp, int cluster_wide,
  58                    const char *function, char *file, unsigned int line);
  59
  60 #define gfs2_consist(sdp) \
  61 gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
  62
  63
  64 int gfs2_consist_inode_i(struct gfs2_inode *ip, int cluster_wide,
  65                          const char *function, char *file, unsigned int line);
  66
  67 #define gfs2_consist_inode(ip) \
  68 gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
  69
  70
  71 int gfs2_consist_rgrpd_i(struct gfs2_rgrpd *rgd, int cluster_wide,
  72                          const char *function, char *file, unsigned int line);
  73
  74 #define gfs2_consist_rgrpd(rgd) \
  75 gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
  76
  77
  78 int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  79                        const char *type, const char *function,
  80                        char *file, unsigned int line);
  81
  82 static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
  83                                     struct buffer_head *bh,
  84                                     const char *function,
  85                                     char *file, unsigned int line)
  86 {
  87         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
  88         u32 magic = be32_to_cpu(mh->mh_magic);
  89         if (unlikely(magic != GFS2_MAGIC))
  90                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
  91                                           file, line);
  92         return 0;
  93 }
  94
  95 #define gfs2_meta_check(sdp, bh) \
  96 gfs2_meta_check_i((sdp), (bh), __func__, __FILE__, __LINE__)
  97
  98
  99 int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
 100                            u16 type, u16 t,
 101                            const char *function,
 102                            char *file, unsigned int line);
 103
 104 static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
 105                                         struct buffer_head *bh,
 106                                         u16 type,
 107                                         const char *function,
 108                                         char *file, unsigned int line)
 109 {
 110         struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
 111         u32 magic = be32_to_cpu(mh->mh_magic);
 112         u16 t = be32_to_cpu(mh->mh_type);
 113         if (unlikely(magic != GFS2_MAGIC))
 114                 return gfs2_meta_check_ii(sdp, bh, "magic number", function,
 115                                           file, line);
 116         if (unlikely(t != type))
 117                 return gfs2_metatype_check_ii(sdp, bh, type, t, function,
 118                                               file, line);
 119         return 0;
 120 }
 121
 122 #define gfs2_metatype_check(sdp, bh, type) \
 123 gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
 124
 125 static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
 126                                      u16 format)
 127 {
 128         struct gfs2_meta_header *mh;
 129         mh = (struct gfs2_meta_header *)bh->b_data;
 130         mh->mh_type = cpu_to_be32(type);
 131         mh->mh_format = cpu_to_be32(format);
 132 }
 133
 134
 135 int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
 136                     char *file, unsigned int line);
 137
 138 #define gfs2_io_error(sdp) \
 139 gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
 140
 141
 142 int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
 143                        const char *function, char *file, unsigned int line);
 144
 145 #define gfs2_io_error_bh(sdp, bh) \
 146 gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
 147
 148
 149 extern struct kmem_cache *gfs2_glock_cachep;
 150 extern struct kmem_cache *gfs2_glock_aspace_cachep;
 151 extern struct kmem_cache *gfs2_inode_cachep;
 152 extern struct kmem_cache *gfs2_bufdata_cachep;
 153 extern struct kmem_cache *gfs2_rgrpd_cachep;
 154 extern struct kmem_cache *gfs2_quotad_cachep;
 155 extern struct kmem_cache *gfs2_rsrv_cachep;
 156 extern mempool_t *gfs2_page_pool;
 157
 158 static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
 159                                            unsigned int *p)
 160 {
 161         unsigned int x;
 162         spin_lock(&gt->gt_spin);
 163         x = *p;
 164         spin_unlock(&gt->gt_spin);
 165         return x;
 166 }
 167
 168 #define gfs2_tune_get(sdp, field) \
 169 gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 170
 171 void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
 172                       unsigned int bit, int new_value);
 173 int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...);
 174
 175 #endif /* __UTIL_DOT_H__ */
 176