fs/reiser4/plugin/space/bitmap.h

   1 /* Copyright 2002, 2003 by Hans Reiser, licensing governed by reiser4/README */
   2
   3 #if !defined (__REISER4_PLUGIN_SPACE_BITMAP_H__)
   4 #define __REISER4_PLUGIN_SPACE_BITMAP_H__
   5
   6 #include "../../dformat.h"
   7 #include "../../block_alloc.h"
   8
   9 #include <linux/types.h>        /* for __u??  */
  10 #include <linux/fs.h>           /* for struct super_block  */
  11 /* EDWARD-FIXME-HANS: write something as informative as the below for every .h file lacking it. */
  12 /* declarations of functions implementing methods of space allocator plugin for
  13    bitmap based allocator. The functions themselves are in bitmap.c */
  14 extern int reiser4_init_allocator_bitmap(reiser4_space_allocator *,
  15                                          struct super_block *, void *);
  16 extern int reiser4_destroy_allocator_bitmap(reiser4_space_allocator *,
  17                                             struct super_block *);
  18 extern int reiser4_alloc_blocks_bitmap(reiser4_space_allocator *,
  19                                        reiser4_blocknr_hint *, int needed,
  20                                        reiser4_block_nr * start,
  21                                        reiser4_block_nr * len);
  22 extern void reiser4_check_blocks_bitmap(const reiser4_block_nr *,
  23                                         const reiser4_block_nr *, int);
  24 extern void reiser4_dealloc_blocks_bitmap(reiser4_space_allocator *,
  25                                           reiser4_block_nr,
  26                                           reiser4_block_nr);
  27 extern int reiser4_pre_commit_hook_bitmap(void);
  28
  29 #define reiser4_post_commit_hook_bitmap() do{}while(0)
  30 #define reiser4_post_write_back_hook_bitmap() do{}while(0)
  31 #define reiser4_print_info_bitmap(pref, al) do{}while(0)
  32
  33 typedef __u64 bmap_nr_t;
  34 typedef __u32 bmap_off_t;
  35
  36 #endif                          /* __REISER4_PLUGIN_SPACE_BITMAP_H__ */
  37
  38 /* Make Linus happy.
  39    Local variables:
  40    c-indentation-style: "K&R"
  41    mode-name: "LC"
  42    c-basic-offset: 8
  43    tab-width: 8
  44    fill-column: 120
  45    scroll-step: 1
  46    End:
  47 */