fs/gfs2/lops.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 __LOPS_DOT_H__
  11 #define __LOPS_DOT_H__
  12
  13 #include <linux/list.h>
  14 #include "incore.h"
  15
  16 extern const struct gfs2_log_operations gfs2_glock_lops;
  17 extern const struct gfs2_log_operations gfs2_buf_lops;
  18 extern const struct gfs2_log_operations gfs2_revoke_lops;
  19 extern const struct gfs2_log_operations gfs2_rg_lops;
  20 extern const struct gfs2_log_operations gfs2_databuf_lops;
  21
  22 extern const struct gfs2_log_operations *gfs2_log_ops[];
  23
  24 static inline void lops_init_le(struct gfs2_log_element *le,
  25                                 const struct gfs2_log_operations *lops)
  26 {
  27         INIT_LIST_HEAD(&le->le_list);
  28         le->le_ops = lops;
  29 }
  30
  31 static inline void lops_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
  32 {
  33         if (le->le_ops->lo_add)
  34                 le->le_ops->lo_add(sdp, le);
  35 }
  36
  37 static inline void lops_incore_commit(struct gfs2_sbd *sdp,
  38                                       struct gfs2_trans *tr)
  39 {
  40         int x;
  41         for (x = 0; gfs2_log_ops[x]; x++)
  42                 if (gfs2_log_ops[x]->lo_incore_commit)
  43                         gfs2_log_ops[x]->lo_incore_commit(sdp, tr);
  44 }
  45
  46 static inline void lops_before_commit(struct gfs2_sbd *sdp)
  47 {
  48         int x;
  49         for (x = 0; gfs2_log_ops[x]; x++)
  50                 if (gfs2_log_ops[x]->lo_before_commit)
  51                         gfs2_log_ops[x]->lo_before_commit(sdp);
  52 }
  53
  54 static inline void lops_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
  55 {
  56         int x;
  57         for (x = 0; gfs2_log_ops[x]; x++)
  58                 if (gfs2_log_ops[x]->lo_after_commit)
  59                         gfs2_log_ops[x]->lo_after_commit(sdp, ai);
  60 }
  61
  62 static inline void lops_before_scan(struct gfs2_jdesc *jd,
  63                                     struct gfs2_log_header_host *head,
  64                                     unsigned int pass)
  65 {
  66         int x;
  67         for (x = 0; gfs2_log_ops[x]; x++)
  68                 if (gfs2_log_ops[x]->lo_before_scan)
  69                         gfs2_log_ops[x]->lo_before_scan(jd, head, pass);
  70 }
  71
  72 static inline int lops_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
  73                                      struct gfs2_log_descriptor *ld,
  74                                      __be64 *ptr,
  75                                      unsigned int pass)
  76 {
  77         int x, error;
  78         for (x = 0; gfs2_log_ops[x]; x++)
  79                 if (gfs2_log_ops[x]->lo_scan_elements) {
  80                         error = gfs2_log_ops[x]->lo_scan_elements(jd, start,
  81                                                                   ld, ptr, pass);
  82                         if (error)
  83                                 return error;
  84                 }
  85
  86         return 0;
  87 }
  88
  89 static inline void lops_after_scan(struct gfs2_jdesc *jd, int error,
  90                                    unsigned int pass)
  91 {
  92         int x;
  93         for (x = 0; gfs2_log_ops[x]; x++)
  94                 if (gfs2_log_ops[x]->lo_before_scan)
  95                         gfs2_log_ops[x]->lo_after_scan(jd, error, pass);
  96 }
  97
  98 #endif /* __LOPS_DOT_H__ */
  99