linux/fs/gfs2/util.h
<<
>>
Prefs
   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
  30void gfs2_assert_i(struct gfs2_sbd *sdp);
  31
  32#define gfs2_assert(sdp, assertion) \
  33do { \
  34        if (unlikely(!(assertion))) { \
  35                gfs2_assert_i(sdp); \
  36                BUG(); \
  37        } \
  38} while (0)
  39
  40
  41int 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
  49int 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
  57int 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) \
  61gfs2_consist_i((sdp), 0, __func__, __FILE__, __LINE__)
  62
  63
  64int 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) \
  68gfs2_consist_inode_i((ip), 0, __func__, __FILE__, __LINE__)
  69
  70
  71int 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) \
  75gfs2_consist_rgrpd_i((rgd), 0, __func__, __FILE__, __LINE__)
  76
  77
  78int 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
  82static inline int gfs2_meta_check(struct gfs2_sbd *sdp,
  83                                    struct buffer_head *bh)
  84{
  85        struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
  86        u32 magic = be32_to_cpu(mh->mh_magic);
  87        if (unlikely(magic != GFS2_MAGIC)) {
  88                printk(KERN_ERR "GFS2: Magic number missing at %llu\n",
  89                       (unsigned long long)bh->b_blocknr);
  90                return -EIO;
  91        }
  92        return 0;
  93}
  94
  95int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
  96                           u16 type, u16 t,
  97                           const char *function,
  98                           char *file, unsigned int line);
  99
 100static inline int gfs2_metatype_check_i(struct gfs2_sbd *sdp,
 101                                        struct buffer_head *bh,
 102                                        u16 type,
 103                                        const char *function,
 104                                        char *file, unsigned int line)
 105{
 106        struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
 107        u32 magic = be32_to_cpu(mh->mh_magic);
 108        u16 t = be32_to_cpu(mh->mh_type);
 109        if (unlikely(magic != GFS2_MAGIC))
 110                return gfs2_meta_check_ii(sdp, bh, "magic number", function,
 111                                          file, line);
 112        if (unlikely(t != type))
 113                return gfs2_metatype_check_ii(sdp, bh, type, t, function,
 114                                              file, line);
 115        return 0;
 116}
 117
 118#define gfs2_metatype_check(sdp, bh, type) \
 119gfs2_metatype_check_i((sdp), (bh), (type), __func__, __FILE__, __LINE__)
 120
 121static inline void gfs2_metatype_set(struct buffer_head *bh, u16 type,
 122                                     u16 format)
 123{
 124        struct gfs2_meta_header *mh;
 125        mh = (struct gfs2_meta_header *)bh->b_data;
 126        mh->mh_type = cpu_to_be32(type);
 127        mh->mh_format = cpu_to_be32(format);
 128}
 129
 130
 131int gfs2_io_error_i(struct gfs2_sbd *sdp, const char *function,
 132                    char *file, unsigned int line);
 133
 134#define gfs2_io_error(sdp) \
 135gfs2_io_error_i((sdp), __func__, __FILE__, __LINE__);
 136
 137
 138int gfs2_io_error_bh_i(struct gfs2_sbd *sdp, struct buffer_head *bh,
 139                       const char *function, char *file, unsigned int line);
 140
 141#define gfs2_io_error_bh(sdp, bh) \
 142gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
 143
 144
 145extern struct kmem_cache *gfs2_glock_cachep;
 146extern struct kmem_cache *gfs2_glock_aspace_cachep;
 147extern struct kmem_cache *gfs2_inode_cachep;
 148extern struct kmem_cache *gfs2_bufdata_cachep;
 149extern struct kmem_cache *gfs2_rgrpd_cachep;
 150extern struct kmem_cache *gfs2_quotad_cachep;
 151extern struct kmem_cache *gfs2_rsrv_cachep;
 152extern mempool_t *gfs2_page_pool;
 153
 154static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
 155                                           unsigned int *p)
 156{
 157        unsigned int x;
 158        spin_lock(&gt->gt_spin);
 159        x = *p;
 160        spin_unlock(&gt->gt_spin);
 161        return x;
 162}
 163
 164#define gfs2_tune_get(sdp, field) \
 165gfs2_tune_get_i(&(sdp)->sd_tune, &(sdp)->sd_tune.field)
 166
 167void gfs2_icbit_munge(struct gfs2_sbd *sdp, unsigned char **bitmap,
 168                      unsigned int bit, int new_value);
 169int gfs2_lm_withdraw(struct gfs2_sbd *sdp, char *fmt, ...);
 170
 171#endif /* __UTIL_DOT_H__ */
 172
 173
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.