LXR linux/fs/ext4/group.h

   1/*
   2 *  linux/fs/ext4/group.h
   3 *
   4 * Copyright (C) 2007 Cluster File Systems, Inc
   5 *
   6 * Author: Andreas Dilger <adilger@clusterfs.com>
   7 */
   8
   9#ifndef _LINUX_EXT4_GROUP_H
  10#define _LINUX_EXT4_GROUP_H
  11
  12extern __le16 ext4_group_desc_csum(struct ext4_sb_info *sbi, __u32 group,
  13                                   struct ext4_group_desc *gdp);
  14extern int ext4_group_desc_csum_verify(struct ext4_sb_info *sbi, __u32 group,
  15                                       struct ext4_group_desc *gdp);
  16struct buffer_head *ext4_read_block_bitmap(struct super_block *sb,
  17                                      ext4_group_t block_group);
  18extern unsigned ext4_init_block_bitmap(struct super_block *sb,
  19                                       struct buffer_head *bh,
  20                                       ext4_group_t group,
  21                                       struct ext4_group_desc *desc);
  22#define ext4_free_blocks_after_init(sb, group, desc)                    \
  23                ext4_init_block_bitmap(sb, NULL, group, desc)
  24extern unsigned ext4_init_inode_bitmap(struct super_block *sb,
  25                                       struct buffer_head *bh,
  26                                       ext4_group_t group,
  27                                       struct ext4_group_desc *desc);
  28extern void mark_bitmap_end(int start_bit, int end_bit, char *bitmap);
  29#endif /* _LINUX_EXT4_GROUP_H */
  30